The integration of polyoxometalate (POM) anions with functionalized cations within a single molecule remains a challenging task, even though POMs have garnered significant interest over an extended period. Here, we constructed two cobalt(II) complexes by incorporating isomeric POM anions with [Co(pyterpy)2]2+. Intriguingly, a locked high-spin (HS) state and a spin-crossover (SCO) behavior of the 3d7-CoII ion in the identical cation [Co(pyterpy)2]2+ were governed by α-type and β-type [Mo8O26]4– anions, and the HS-Co(II) ion showed field-induced slow magnetic relaxation. Furthermore, both complexes exhibited potential as solid-state proton conductors. This study revealed that POM anions possessed the dual capability of modulating magnetism and synthesizing multifunctional molecular materials.
{"title":"Polyoxometalate Anion-Induced On–Off Spin-Crossover Property in Two Isomeric Cobalt(II) Complexes with Proton Conductivity","authors":"Xiao-Peng Sun, Jiajia Li, Yun Li, Yuxia Li, Zhongtian Gao, Zheng Tang, Pengtao Ma, Jingping Wang, Jingyang Niu","doi":"10.1021/acs.inorgchem.5c00639","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00639","url":null,"abstract":"The integration of polyoxometalate (POM) anions with functionalized cations within a single molecule remains a challenging task, even though POMs have garnered significant interest over an extended period. Here, we constructed two cobalt(II) complexes by incorporating isomeric POM anions with [Co(pyterpy)<sub>2</sub>]<sup>2+</sup>. Intriguingly, a locked high-spin (HS) state and a spin-crossover (SCO) behavior of the 3<i>d</i><sup>7</sup>-Co<sup>II</sup> ion in the identical cation [Co(pyterpy)<sub>2</sub>]<sup>2+</sup> were governed by α-type and β-type [Mo<sub>8</sub>O<sub>26</sub>]<sup>4–</sup> anions, and the HS-Co(II) ion showed field-induced slow magnetic relaxation. Furthermore, both complexes exhibited potential as solid-state proton conductors. This study revealed that POM anions possessed the dual capability of modulating magnetism and synthesizing multifunctional molecular materials.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"43 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-18DOI: 10.1021/acs.inorgchem.5c00408
Qian Liu, Ya-Nan Sun, Wei Yang, Yuan-Yuan Ma, Jing Du, Zhan-Gang Han
Chemical depolymerization and recycling of poly(ethylene terephthalate) (PET) constitute a sustainable, resource-efficient, and environmentally beneficial approach, which requires the development of efficient heterogeneous catalysts. Herein, polyoxometalate(POM)-based zinc–organic networks were synthesized as dual-site acid catalysts for the alcoholysis of PET into the value-added terephthalic acid (TPA) product, with formulas of [Zn2(μ2-Cl)(H2O)2(DTAB)3][PW12O40]·4H2O (1), [Zn2(DTAB)4][SiW12O40]·4H2O (2), and [Zn2(H2O)4(DTAB)2.5][HBW12O40]·8H2O (3) (DTAB = 1,4-di(4H-1,2,4-triazol-4-yl)benzene). Structural analysis showed that compounds 1 and 2 were composed of 2D Zn-ligand networks embedded POM clusters in an “egg-in-a-box” manner and that compound 3 consisted of a 3D POM-based host–guest framework constructed by {Zn2(H2O)4(N-N)3} units and [HBW12O40]4– clusters. Three compounds incorporate the Zn2+ Lewis acid centers and heteropolytungstate clusters, having the acid strength order compound 3 > compound 1 > compound 2. When employed as dual-site acid catalysts, the three compounds exhibited efficient catalytic performance for PET alcoholysis into TPA with >92% conversion rate and >94% selectivity of the TPA product, along with excellent recyclability and structural stability. This work offers a novel perspective for the development of POM-based heterogeneous catalysts in the upcycling of plastic waste.
{"title":"Polyoxometalate-Based Zinc–Organic Network as a Dual-Site Acid Catalyst for the Conversion of Polyethylene Terephthalate Plastic to Terephthalic Acid","authors":"Qian Liu, Ya-Nan Sun, Wei Yang, Yuan-Yuan Ma, Jing Du, Zhan-Gang Han","doi":"10.1021/acs.inorgchem.5c00408","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00408","url":null,"abstract":"Chemical depolymerization and recycling of poly(ethylene terephthalate) (PET) constitute a sustainable, resource-efficient, and environmentally beneficial approach, which requires the development of efficient heterogeneous catalysts. Herein, polyoxometalate(POM)-based zinc–organic networks were synthesized as dual-site acid catalysts for the alcoholysis of PET into the value-added terephthalic acid (TPA) product, with formulas of [Zn<sub>2</sub>(μ<sub>2</sub>-Cl)(H<sub>2</sub>O)<sub>2</sub>(DTAB)<sub>3</sub>][PW<sub>12</sub>O<sub>40</sub>]·4H<sub>2</sub>O (<b>1</b>), [Zn<sub>2</sub>(DTAB)<sub>4</sub>][SiW<sub>12</sub>O<sub>40</sub>]·4H<sub>2</sub>O (<b>2</b>), and [Zn<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>(DTAB)<sub>2.5</sub>][HBW<sub>12</sub>O<sub>40</sub>]·8H<sub>2</sub>O (<b>3</b>) (DTAB = 1,4-di(4<i>H</i>-1,2,4-triazol-4-yl)benzene). Structural analysis showed that compounds <b>1</b> and <b>2</b> were composed of 2D Zn-ligand networks embedded POM clusters in an “egg-in-a-box” manner and that compound <b>3</b> consisted of a 3D POM-based host–guest framework constructed by {Zn<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>(N-N)<sub>3</sub>} units and [HBW<sub>12</sub>O<sub>40</sub>]<sup>4–</sup> clusters. Three compounds incorporate the Zn<sup>2+</sup> Lewis acid centers and heteropolytungstate clusters, having the acid strength order compound <b>3</b> > compound <b>1</b> > compound <b>2</b>. When employed as dual-site acid catalysts, the three compounds exhibited efficient catalytic performance for PET alcoholysis into TPA with >92% conversion rate and >94% selectivity of the TPA product, along with excellent recyclability and structural stability. This work offers a novel perspective for the development of POM-based heterogeneous catalysts in the upcycling of plastic waste.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"32 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1021/acs.inorgchem.5c01052
Qinglan Zhong, Gangji Yi, Juan Cheng, Xin Wang, Guohong Zou, Ling Huang, Zhien Lin
Two organic–inorganic hybrid solids, namely, Zn(SCN)2(L-C9H11NO2)2 (1) and Zn4(SCN)4(L-C5H8NO3)4(H2O)4 (2), were synthesized by incorporating chiral amino acids into the zinc thiocyanate system. Compound 1 crystallizes as a monomeric complex in the noncentrosymmetric space group P21, while compound 2 features a circular tetrameric structure crystallized in the noncentrosymmetric space group P21212. Both compounds exhibit phase-matching second-harmonic generation (SHG) responses, which are 1.4 and 3.1 times that of KH2PO4, respectively. Theoretical calculations were conducted to determine the source of their SHG responses.
{"title":"Phase-Matching Second-Harmonic Generation in Zero-Dimensional Zinc Thiocyanates Ligated with Chiral Amino Acids","authors":"Qinglan Zhong, Gangji Yi, Juan Cheng, Xin Wang, Guohong Zou, Ling Huang, Zhien Lin","doi":"10.1021/acs.inorgchem.5c01052","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01052","url":null,"abstract":"Two organic–inorganic hybrid solids, namely, Zn(SCN)<sub>2</sub>(L-C<sub>9</sub>H<sub>11</sub>NO<sub>2</sub>)<sub>2</sub> (<b>1</b>) and Zn<sub>4</sub>(SCN)<sub>4</sub>(L-C<sub>5</sub>H<sub>8</sub>NO<sub>3</sub>)<sub>4</sub>(H<sub>2</sub>O)<sub>4</sub> (<b>2</b>), were synthesized by incorporating chiral amino acids into the zinc thiocyanate system. Compound <b>1</b> crystallizes as a monomeric complex in the noncentrosymmetric space group <i>P</i>2<sub>1</sub>, while compound <b>2</b> features a circular tetrameric structure crystallized in the noncentrosymmetric space group <i>P</i>2<sub>1</sub>2<sub>1</sub>2. Both compounds exhibit phase-matching second-harmonic generation (SHG) responses, which are 1.4 and 3.1 times that of KH<sub>2</sub>PO<sub>4</sub>, respectively. Theoretical calculations were conducted to determine the source of their SHG responses.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"4 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1021/acs.inorgchem.4c05065
Anangamohan Panja, Erik Čižmár, Narayan Ch. Jana, Paula Brandão, Rakhi Nandy
We report a combined experimental and theoretical magneto-structural study of four heterometallic isostructural complexes: [Ni2Mn2(L)2(OAc)2{N(CN)2}]·5H2O (1), [Ni2Mn2(L)2(OAc)2(N3)2]·MeCN (2), [Ni2Mn2(L)2(OAc)2(NCS)2]·H2O (3), and [Ni2Co2(L)2(OAc)2(NCS)2]·4H2O (4). These complexes were synthesized using a compartmental Schiff base ligand, N,N′-bis(3-methoxy-5-methylsalicylidene)-2,2-dimethyl-1,3-diaminopropane (H2L), and various pseudohalide ions. X-ray crystallography reveals cubane-like structures featuring a {Ni2M2(μ3-O)4} (M = Mn or Co) core. The NiII centers invariably exhibit octahedral geometry, while MnII and CoII ions adopt hepta-coordinated pentagonal bipyramidal geometries. Magnetic studies, ab initio calculations, and BS-DFT analyses reveal competing ferromagnetic (FM) and antiferromagnetic (AFM) exchange interactions. The heterometallic exchange via an additional μ-O,O′-acetate ligand is FM, contrasting with mostly AFM interactions through the two μ3-O bridges. NiII ions in 1–4 display moderate easy-plane single-ion anisotropy, while complex 4 uniquely features hepta-coordinated CoII ions with easy-axis anisotropy of DCo ≈ −23 cm–1. Moreover, a field-induced slow magnetic relaxation was observed in 4, governed by a direct relaxation process. Notably, this is the first report of a Ni2Mn2 cubane structure, with only one prior example of a Ni2Co2 cubane complex in the literature. Thus, this study uncovers the magneto-structural properties of rare Ni2Mn2 and Ni2Co2 systems while highlighting 4 as a unique case of hepta-coordinated CoII ions with significant easy-axis anisotropy and slow magnetization relaxation, enriching the molecular magnetism landscape.
{"title":"Magneto-Structural Characterization of Heterometallic NiII2MnII2/NiII2CoII2 Cubane Complexes with a Compartmental Ligand","authors":"Anangamohan Panja, Erik Čižmár, Narayan Ch. Jana, Paula Brandão, Rakhi Nandy","doi":"10.1021/acs.inorgchem.4c05065","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c05065","url":null,"abstract":"We report a combined experimental and theoretical magneto-structural study of four heterometallic isostructural complexes: [Ni<sub>2</sub>Mn<sub>2</sub>(L)<sub>2</sub>(OAc)<sub>2</sub>{N(CN)<sub>2</sub>}]·5H<sub>2</sub>O (<b>1</b>), [Ni<sub>2</sub>Mn<sub>2</sub>(L)<sub>2</sub>(OAc)<sub>2</sub>(N<sub>3</sub>)<sub>2</sub>]·MeCN (<b>2</b>), [Ni<sub>2</sub>Mn<sub>2</sub>(L)<sub>2</sub>(OAc)<sub>2</sub>(NCS)<sub>2</sub>]·H<sub>2</sub>O (<b>3</b>), and [Ni<sub>2</sub>Co<sub>2</sub>(L)<sub>2</sub>(OAc)<sub>2</sub>(NCS)<sub>2</sub>]·4H<sub>2</sub>O (<b>4</b>). These complexes were synthesized using a compartmental Schiff base ligand, <i>N,N</i>′-bis(3-methoxy-5-methylsalicylidene)-2,2-dimethyl-1,3-diaminopropane (H<sub>2</sub>L), and various pseudohalide ions. X-ray crystallography reveals cubane-like structures featuring a {Ni<sub>2</sub>M<sub>2</sub>(μ<sub>3</sub>-O)<sub>4</sub>} (M = Mn or Co) core. The Ni<sup>II</sup> centers invariably exhibit octahedral geometry, while Mn<sup>II</sup> and Co<sup>II</sup> ions adopt hepta-coordinated pentagonal bipyramidal geometries. Magnetic studies, ab initio calculations, and BS-DFT analyses reveal competing ferromagnetic (FM) and antiferromagnetic (AFM) exchange interactions. The heterometallic exchange via an additional μ-O,O′-acetate ligand is FM, contrasting with mostly AFM interactions through the two μ<sub>3</sub>-O bridges. Ni<sup>II</sup> ions in <b>1–4</b> display moderate easy-plane single-ion anisotropy, while complex <b>4</b> uniquely features hepta-coordinated Co<sup>II</sup> ions with eas<i>y</i>-axis anisotropy of <i>D</i><sub>Co</sub> ≈ −23 cm<sup>–1</sup>. Moreover, a field-induced slow magnetic relaxation was observed in <b>4</b>, governed by a direct relaxation process. Notably, this is the first report of a Ni<sub>2</sub>Mn<sub>2</sub> cubane structure, with only one prior example of a Ni<sub>2</sub>Co<sub>2</sub> cubane complex in the literature. Thus, this study uncovers the magneto-structural properties of rare Ni<sub>2</sub>Mn<sub>2</sub> and Ni<sub>2</sub>Co<sub>2</sub> systems while highlighting <b>4</b> as a unique case of hepta-coordinated Co<sup>II</sup> ions with significant eas<i>y</i>-axis anisotropy and slow magnetization relaxation, enriching the molecular magnetism landscape.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"4 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1021/acs.inorgchem.5c00242
Concettina Andrello, Loic Favergeon, Lionel Desgranges, Daniel Freis
We studied two scenarios of the interaction between uranium dioxide and liquid sodium in conditions similar to in-reactor conditions for defective fuel pins in contact with sodium: scenario 1 with a constant oxygen potential and scenario 2 with a given starting amount of oxygen. The samples after interaction were characterized by X-ray diffraction, grazing incidence X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy. The experimental results show that the reaction between liquid sodium containing dissolved oxygen and stoichiometric UO2 leads to the production of a corrosion layer, which develops uniformly on the surface without any dependence upon UO2 grain orientation or grain size. Depending on the oxygen feeding, the crystallographic phases of the corrosion layer change. If trisodium uranate Na3UO4 is the only phase obtained in scenario 2, for the first time, it is observed that both Na3UO4 and NaUO3 phases are formed within the corrosion layer in scenario 1.
{"title":"Characterization of the Corrosion Layer onto Stoichiometric Uranium Oxide Created by Liquid Sodium toward a Kinetic Modeling","authors":"Concettina Andrello, Loic Favergeon, Lionel Desgranges, Daniel Freis","doi":"10.1021/acs.inorgchem.5c00242","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00242","url":null,"abstract":"We studied two scenarios of the interaction between uranium dioxide and liquid sodium in conditions similar to in-reactor conditions for defective fuel pins in contact with sodium: scenario 1 with a constant oxygen potential and scenario 2 with a given starting amount of oxygen. The samples after interaction were characterized by X-ray diffraction, grazing incidence X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy. The experimental results show that the reaction between liquid sodium containing dissolved oxygen and stoichiometric UO<sub>2</sub> leads to the production of a corrosion layer, which develops uniformly on the surface without any dependence upon UO<sub>2</sub> grain orientation or grain size. Depending on the oxygen feeding, the crystallographic phases of the corrosion layer change. If trisodium uranate Na<sub>3</sub>UO<sub>4</sub> is the only phase obtained in scenario 2, for the first time, it is observed that both Na<sub>3</sub>UO<sub>4</sub> and NaUO<sub>3</sub> phases are formed within the corrosion layer in scenario 1.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"37 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1021/acs.inorgchem.5c00031
Zhongjuan Han, Jinbao Wang, Chengwei Zhang, Zhonghao Xia, Jiangang He
Zintl semiconductors are known to exhibit exceptional thermoelectric properties, due to their high electron transport and low lattice thermal conductivity (κL). In this work, thermoelectric properties of Zintl compounds Sr2CdX2 (X = As, Sb, Bi) were studied by using first-principles calculations in conjunction with Boltzmann transport theory. Both Sr2CdSb2 and Sr2CdBi2 adopt the same structure as Sr2CdAs2 (Cmc21) and are synthesizable. All of these compounds demonstrate low lattice thermal conductivities, ranging from 2.3 to 0.5 Wm1– K–1 at 300 K, attributed to their low sound velocity and significant three-phonon scattering, which originate from the weak chemical bonds and strong interaction between acoustic phonons and low-lying optical phonons. The low polar-optical phonon scattering is a result of the relatively small contributions of ions to dielectric constants. Notably, the electrical conductivities (σ) and κL of these compounds exhibit significant anisotropy, with the highest and lowest values being along the x- and z-axis, respectively. Consequently, the highest ZT values of Sr2CdAs2 (1.39), Sr2CdSb2 (1.97), and Sr2CdBi2 (1.74) are achieved along the x-direction at 800 K under n-type doping, respectively, which is comparable or even superior to the well-studied thermoelectric material Mg3Sb2, positioning them as promising candidates for thermoelectric applications.
{"title":"Weak Chemical Bonds and High Electrical Conductivities Lead to High Thermoelectric Performance in Zintl Compounds Sr2CdX2 (X = As, Sb, and Bi)","authors":"Zhongjuan Han, Jinbao Wang, Chengwei Zhang, Zhonghao Xia, Jiangang He","doi":"10.1021/acs.inorgchem.5c00031","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00031","url":null,"abstract":"Zintl semiconductors are known to exhibit exceptional thermoelectric properties, due to their high electron transport and low lattice thermal conductivity (κ<sub>L</sub>). In this work, thermoelectric properties of Zintl compounds Sr<sub>2</sub>CdX<sub>2</sub> (X = As, Sb, Bi) were studied by using first-principles calculations in conjunction with Boltzmann transport theory. Both Sr<sub>2</sub>CdSb<sub>2</sub> and Sr<sub>2</sub>CdBi<sub>2</sub> adopt the same structure as Sr<sub>2</sub>CdAs<sub>2</sub> (<i>Cmc</i>2<sub>1</sub>) and are synthesizable. All of these compounds demonstrate low lattice thermal conductivities, ranging from 2.3 to 0.5 Wm<sup>1–</sup> K<sup>–1</sup> at 300 K, attributed to their low sound velocity and significant three-phonon scattering, which originate from the weak chemical bonds and strong interaction between acoustic phonons and low-lying optical phonons. The low polar-optical phonon scattering is a result of the relatively small contributions of ions to dielectric constants. Notably, the electrical conductivities (σ) and κ<sub>L</sub> of these compounds exhibit significant anisotropy, with the highest and lowest values being along the <i>x</i>- and <i>z</i>-axis, respectively. Consequently, the highest <i>ZT</i> values of Sr<sub>2</sub>CdAs<sub>2</sub> (1.39), Sr<sub>2</sub>CdSb<sub>2</sub> (1.97), and Sr<sub>2</sub>CdBi<sub>2</sub> (1.74) are achieved along the <i>x</i>-direction at 800 K under n-type doping, respectively, which is comparable or even superior to the well-studied thermoelectric material Mg<sub>3</sub>Sb<sub>2</sub>, positioning them as promising candidates for thermoelectric applications.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"4 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1021/acs.inorgchem.4c04486
Hanlin Wu, Wenhao Liu, Nikhil Dhale, Pawan Koirala, David Leif Israel Scherm, Xiqu Wang, Wei-Cheng Lee, Bing Lv
A monoclinic variant of the ThCr2Si2-type structure of BaAg2Sb2, with the Pearson symbol mC10, has been discovered. Its crystal structure was determined by single-crystal X-ray diffraction, with space group C2/m (No. 12), and lattice parameters a = 12.441(4) Å, b = 4.790(2) Å, c = 4.876(2) Å, β = 112.88(1)°, and V = 268.8(6) Å3. It features tetragonally coordinated Ag2Sb2 layers that are distorted and stacked along the crystallographic a-axis, with a strong interlayer Sb–Sb bond. Transport measurements reveal a non-negligible magnetoresistivity of up to 18%, with cusp-like behavior. Electron-dominated charge carriers over a broad temperature range are also verified by Hall measurements. Moreover, temperature-dependent resistivity behavior exhibits a small deviation from the conventional Bloch-Grüneisen model, which is likely due to the brink of a possible Lifshitz transition, as revealed by first-principles calculations.
{"title":"A Monoclinic Variant of ThCr2Si2-Type BaAg2Sb2: Electronic Structure and Physical Properties","authors":"Hanlin Wu, Wenhao Liu, Nikhil Dhale, Pawan Koirala, David Leif Israel Scherm, Xiqu Wang, Wei-Cheng Lee, Bing Lv","doi":"10.1021/acs.inorgchem.4c04486","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c04486","url":null,"abstract":"A monoclinic variant of the ThCr<sub>2</sub>Si<sub>2</sub>-type structure of BaAg<sub>2</sub>Sb<sub>2</sub>, with the Pearson symbol <i>mC</i>10, has been discovered. Its crystal structure was determined by single-crystal X-ray diffraction, with space group <i>C</i>2/<i>m</i> (No. 12), and lattice parameters <i>a</i> = 12.441(4) Å, <i>b</i> = 4.790(2) Å, <i>c</i> = 4.876(2) Å, <i>β</i> = 112.88(1)°, and <i>V</i> = 268.8(6) Å<sup>3</sup>. It features tetragonally coordinated Ag<sub>2</sub>Sb<sub>2</sub> layers that are distorted and stacked along the crystallographic <i>a</i>-axis, with a strong interlayer Sb–Sb bond. Transport measurements reveal a non-negligible magnetoresistivity of up to 18%, with cusp-like behavior. Electron-dominated charge carriers over a broad temperature range are also verified by Hall measurements. Moreover, temperature-dependent resistivity behavior exhibits a small deviation from the conventional Bloch-Grüneisen model, which is likely due to the brink of a possible Lifshitz transition, as revealed by first-principles calculations.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"108 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-16DOI: 10.1021/acs.inorgchem.5c00002
Fu Wang, Xia Zeng, Lingyi Meng, Lingxia Jin, Zuobin Tang, Hu Liu, Huidong Xie
Manganese halides are emerging as promising alternatives to traditional inorganic phosphors and X-ray scintillators due to their low toxicity, high attenuation coefficients, high light yield, and cost-effective solution-processability. We synthesized a novel manganese chloride, (4CTP)2MnCl4 (4CTP = (4-chlorobenzyl)triphenylphosphonium), via solvent volatilization. The crystal exhibits a narrow-band (∼48 nm) green emission at 516 nm under ultraviolet or blue light excitation, attributed to the Mn2+ d-d transition, with a photoluminescence quantum yield (PLQY) of 95.7% and a nearest Mn···Mn distance of 9.909 Å. A white light-emitting diode (LED) for backlight displays was fabricated using (4CTP)2MnCl4, a 450 nm blue LED chip, and K2SiF6: Mn4+, achieving a color gamut of 112.1% at 20 mA. Substituting the red phosphor with (Sr, Ca)AlSiN3: Eu2+ produced a white LED for solid-state lighting with a color rendering index (CRI) of 92.4 and a correlated color temperature (CCT) of 4097 K. The crystal also demonstrated excellent X-ray scintillation properties (a light yield of 63,400 photons/MeV). A flexible (4CTP)2MnCl4@PMMA film enabled high-resolution X-ray imaging (10.4 lp/mm). This work showcases a simple route to develop high-performance manganese halides for LEDs and X-ray imaging.
{"title":"High-Efficiency Green-Emission of an Organophosphorus Manganese Chloride for White LED and X-ray Imaging Applications","authors":"Fu Wang, Xia Zeng, Lingyi Meng, Lingxia Jin, Zuobin Tang, Hu Liu, Huidong Xie","doi":"10.1021/acs.inorgchem.5c00002","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00002","url":null,"abstract":"Manganese halides are emerging as promising alternatives to traditional inorganic phosphors and X-ray scintillators due to their low toxicity, high attenuation coefficients, high light yield, and cost-effective solution-processability. We synthesized a novel manganese chloride, (4CTP)<sub>2</sub>MnCl<sub>4</sub> (4CTP = (4-chlorobenzyl)triphenylphosphonium), via solvent volatilization. The crystal exhibits a narrow-band (∼48 nm) green emission at 516 nm under ultraviolet or blue light excitation, attributed to the Mn<sup>2+</sup> d-d transition, with a photoluminescence quantum yield (PLQY) of 95.7% and a nearest Mn···Mn distance of 9.909 Å. A white light-emitting diode (LED) for backlight displays was fabricated using (4CTP)<sub>2</sub>MnCl<sub>4</sub>, a 450 nm blue LED chip, and K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup>, achieving a color gamut of 112.1% at 20 mA. Substituting the red phosphor with (Sr, Ca)AlSiN<sub>3</sub>: Eu<sup>2+</sup> produced a white LED for solid-state lighting with a color rendering index (CRI) of 92.4 and a correlated color temperature (CCT) of 4097 K. The crystal also demonstrated excellent X-ray scintillation properties (a light yield of 63,400 photons/MeV). A flexible (4CTP)<sub>2</sub>MnCl<sub>4</sub>@PMMA film enabled high-resolution X-ray imaging (10.4 lp/mm). This work showcases a simple route to develop high-performance manganese halides for LEDs and X-ray imaging.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"4 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143837376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the global context of green chemistry and sustainable development, luminescent copper(I) halide complexes hold broad applications, attributed to their abundant resources and excellent photophysical properties. Herein, two novel copper(I) halide complexes were synthesized and systematically investigated using single-crystal X-ray diffraction, photophysical characterization, and theoretical calculations among other methods. Both solid-state complexes exhibit bright green luminescent emissions with low self-absorption rates. The photoluminescence quantum yields (PLQYs) are as high as 95% and 87%, respectively. Because their singlet–triplet energy gaps (ΔEST) are very small, both being 0.10 eV, these complexes can achieve thermally activated delayed fluorescence emission through efficient reverse intersystem crossing. Theoretical calculations revealed that their high-efficiency luminescence arises from the synergistic effects of metal-to-ligand charge transfer, halogen-to-ligand charge transfer, and ligand-to-ligand charge transfer.
{"title":"Synthesis and Characterization of Copper(I) Halide Heteroleptic Complexes with Thermally Activated Delayed Fluorescence","authors":"Yuting Zhu, Xiaofei Kuang, Ting-Ting Li, Chen-Lu Hou, Hui Yang, Can-Zhong Lu","doi":"10.1021/acs.inorgchem.5c00733","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00733","url":null,"abstract":"In the global context of green chemistry and sustainable development, luminescent copper(I) halide complexes hold broad applications, attributed to their abundant resources and excellent photophysical properties. Herein, two novel copper(I) halide complexes were synthesized and systematically investigated using single-crystal X-ray diffraction, photophysical characterization, and theoretical calculations among other methods. Both solid-state complexes exhibit bright green luminescent emissions with low self-absorption rates. The photoluminescence quantum yields (PLQYs) are as high as 95% and 87%, respectively. Because their singlet–triplet energy gaps (Δ<i>E</i><sub>ST</sub>) are very small, both being 0.10 eV, these complexes can achieve thermally activated delayed fluorescence emission through efficient reverse intersystem crossing. Theoretical calculations revealed that their high-efficiency luminescence arises from the synergistic effects of metal-to-ligand charge transfer, halogen-to-ligand charge transfer, and ligand-to-ligand charge transfer.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"16 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-16DOI: 10.1021/acs.inorgchem.4c05449
Kota Munefusa, Erika Fukushi, Takayuki Harada, Hiroyuki Oguchi
We present a new film growth method designed specifically for growing metal hydride thin films that we name “H-radical reactive infrared laser deposition”. This approach leverages hydrogen radicals (H·) to achieve rapid and complete metal hydrogenation, leading to high-purity hydride phases. We demonstrate the effectiveness of this method through the growth of LiH epitaxial thin films, where the H· supply eliminates Li precipitates and enhances crystallinity. Additionally, the use of an infrared laser minimizes film–substrate reactions, reducing the level of impurity formation. To explore the material tunability of this method, we successfully controlled film orientation and achieved Mg doping in LiH. Our findings establish H-radical reactive infrared laser deposition as a promising method for fabricating high-quality metal hydride thin films with tailored properties.
{"title":"H-Radical Reactive Infrared Laser Deposition of LiH: A Method for Growing High-Quality Metal Hydride Epitaxial Films","authors":"Kota Munefusa, Erika Fukushi, Takayuki Harada, Hiroyuki Oguchi","doi":"10.1021/acs.inorgchem.4c05449","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c05449","url":null,"abstract":"We present a new film growth method designed specifically for growing metal hydride thin films that we name “H-radical reactive infrared laser deposition”. This approach leverages hydrogen radicals (H·) to achieve rapid and complete metal hydrogenation, leading to high-purity hydride phases. We demonstrate the effectiveness of this method through the growth of LiH epitaxial thin films, where the H· supply eliminates Li precipitates and enhances crystallinity. Additionally, the use of an infrared laser minimizes film–substrate reactions, reducing the level of impurity formation. To explore the material tunability of this method, we successfully controlled film orientation and achieved Mg doping in LiH. Our findings establish H-radical reactive infrared laser deposition as a promising method for fabricating high-quality metal hydride thin films with tailored properties.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"60 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：