Journal of Organometallic Chemistry最新文献

{"title":"Encapsulation of chiral CoII(R,R)(salen) in mesocellular foam as an efficient heterogeneous catalyst for asymmetric electrocarboxylation of 1-phenylethyl chloride with CO2","authors":"Meng-han Li ,&nbsp;Feng Zhang ,&nbsp;Bao-Han Shan ,&nbsp;Yue Zhao ,&nbsp;Jia-Xing Lu ,&nbsp;Huan Wang","doi":"10.1016/j.jorganchem.2025.123621","DOIUrl":"10.1016/j.jorganchem.2025.123621","url":null,"abstract":"<div><div>The electrocarboxylation of organic molecules with CO₂ allows the synthesis of important carboxylic acids under mild conditions. The introduction of chiral sources enables the catalytic asymmetric synthesis of chiral carboxylic acids using CO₂ as a C1 source, which has important application prospects. In this work, we have successfully prepared chiral immobilized electrode materials by encapsulating chiral Co^II(R,R)(salen) (Co^IIL) complexes in the pores of mesocellular foam (MCF) materials using the strategy of silanization to reduce the pore size. The prepared Co^IIL@MCF composites exhibited good electrocatalytic performance in the asymmetric electrocarboxylation of 1-phenylethyl chloride with CO₂, leading to the synthesis of chiral 2-phenylpropionic acid with an enantiomeric excess value of 71% and a yield of 49%. The encapsulated Co^IIL@MCF composites can significantly reduce the amount of chiral Co^IIL complexes used. Moreover, they are stable, easy to separate, and have excellent reusability.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123621"},"PeriodicalIF":2.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic Fe3O4 nanoparticles modified with tannic acid as a support for silver nanoparticles: Catalytic efficiency in procuring 1-substituted-1H-tetrazoles and investigation its therapeutic effects on mycoplasma pneumonia infected pneumonia mice model","authors":"Jianhui Peng ,&nbsp;Siwei Luo ,&nbsp;Yisui Cen ,&nbsp;Hailiang Li ,&nbsp;DeQin Zeng ,&nbsp;Can Cai","doi":"10.1016/j.jorganchem.2025.123617","DOIUrl":"10.1016/j.jorganchem.2025.123617","url":null,"abstract":"<div><div>In this research, we present a green method for synthesizing silver nanoparticles supported on tannic acid (TA)-coated magnetic Fe₃O₄ nanoparticles (Fe₃O₄@TA). This nanocomposite functions as both reducing and stabilizing reagent. We specified the constructional and physicochemical features of the synthesized Fe₃O₄@TA/Ag NPs using several analytical tools, especially TEM, FE-SEM, EDX, elemental mapping, ICP, VSM, and XRD. For catalytic testing, we explored a 1-substituted-tetrazoles synthesis through a multicomponent reaction involving amines, triethyl orthoformate, and sodium azide in solvent-free circumstances, achieving good results. We also corroborated the catalyst stability by reusability tests across six cycles, along with hot filtration and leaching experiments. The in vivo investigation involves evaluating the <em>P. aeruginosa</em> lethal dose in Swiss albino mice, along with a disease manifestations analysis. This analysis includes monitoring reductions in bacteremia, body weight, hypothermia, and various other parameters throughout a 48-hour infection period. The untreated animals demonstrated a significant decline in body temperature, recorded at 25 °C after 48 h, in contrast to the initial measurement of 39 °C. Furthermore, a weight reduction of 30 % was observed by the study end. The evaluation of the efficacy of Fe₃O₄@TA/Ag NPs nanocomposite in treating lung infections was conducted through the use of calculated lethal doses, bacteremia assessments, and histopathological analyses. On day 8, the bacterial load in the Fe₃O₄@TA/Ag NPs nanocomposite group was recorded at 0.5 Log10CFU/mL, reflecting a significant reduction from the initial level of 1.5 Log10CFU/mL observed on day 1. The histopathological analysis demonstrated a pervasive and intermittent accumulation of inflammatory cells within the alveolar spaces, with infiltrates detected across all lung sections in the untreated animals. The group of animals that received treatment exhibited improved lung histology, characterized by a decrease in exudates at a dosage of 200 µg/kg. The research clearly establishes the effectiveness of Fe₃O₄@TA/Ag NPs nanocomposite in addressing lung infections caused by <em>P. aeruginosa</em> at a dosage of 200 µg/kg. This investigation seeks to examine the biomedical properties of these Fe₃O₄@TA/Ag NPs nanocomposite to formulate a robust treatment for this formidable pathogen.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123617"},"PeriodicalIF":2.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valence detrapping accompanied by intramolecular and intermolecular halogen exchange in the solution of the mixed-valence binuclear ruthenocenes","authors":"Ryuki Kuro-oka ,&nbsp;Satoru Nakashima","doi":"10.1016/j.jorganchem.2025.123612","DOIUrl":"10.1016/j.jorganchem.2025.123612","url":null,"abstract":"<div><div>Biruthenocene(RcRc) was oxidized with halogen to form [Rc(II)-Rc(IV)-X]⁺Y⁻ (X = I, Br; Y = I₃, Br₃, BF₄, PF₆). The variable temperature (VT) ¹H NMR showed the intermolecular effect on the valence detrapping only for [RcRc-I]⁺I₃⁻ by changing the concentration of the solution, while the other complexes did not show solution concentration dependence. This reveals that the intramolecular halogen exchange is a main mechanism for valence detrapping, while the intermolecular halogen exchange is added only for [RcRc-I]⁺I₃⁻. This was suggested to be due to the equilibrium such as I₃⁻ ⇌ I₂ + I⁻. This I⁻ is thought to mediate I⁻ exchange among mixed-valence cations (I⁻ + I₃⁻ ⇌ I₃⁻ + I⁻, Grotthuss mechanism). On the other hand, [RcRc-Br]⁺Br₃⁻ did not show concentration dependence. The difference between the two adducts was suggested to be due to the difference in σ-hole density of halogen. VT ¹H NMR of mixed compounds (each [Rc(II)-Rc(IV)-X]⁺Y⁻ (X = I, Br; Y = I₃, Br₃, BF₄, PF₆) and RcRc) was also measured. The broadening of RcRc signal was observed in the mixed compounds for iodine adducts. It is considered that iodine adducts have an intermolecular exchange reaction with RcRc due to easier intermolecular transfer of adducted I⁻. In this case also the intermolecular exchange was shown to be significant for the valence detrapping for the mixture of [RcRc-I]⁺I₃⁻ and RcRc. On the other hand, bromine adducts with RcRc did not show the broadening of RcRc signal in the mixed compounds. The intramolecular valence detrapping in the mixed-valence [RcRc-Br]⁺ was dominant even in the mixture of [Rc(II)-Rc(IV)-Br]⁺Y⁻ (Y = Br₃, BF₄, PF₆) and RcRc. The difference between iodine adducts and bromine adducts in the mixture with RcRc agrees with the halogen trend for valence detrapping reported for the mixture of RcH and RcH-X⁺ (X = I, Br). It was suggested that σ-hole density of the halogen has an important role in the halogen transfer between RcRcX⁺ and RcRc. The solvent effect on halogen exchange was also discussed by considering the solvation of [Rc(II)-Rc(IV)-X]²⁺and Y⁻.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123612"},"PeriodicalIF":2.1,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achieving deep red to near-infrared electroluminescence in platinum complex through enhanced conjugation of the ligand","authors":"Cheng Zhang ,&nbsp;Jialu Liu ,&nbsp;Danfeng He ,&nbsp;Keyue Xu ,&nbsp;Yuanyuan Fang ,&nbsp;Wei Sun ,&nbsp;Wenjing Xiong","doi":"10.1016/j.jorganchem.2025.123613","DOIUrl":"10.1016/j.jorganchem.2025.123613","url":null,"abstract":"<div><div>Three mononuclear platinum (II) complexes <strong>piqPtOXD, 2niqPtOXD</strong> and <strong>PyriqPtOXD</strong> were synthesized using phenyl isoquinoline, naphthalene isoquinoline and pyrene isoquinoline as cyclometalated ligands and 1,3,4-oxadiazole derivatives as auxiliary ligands. The photophysical, electrochemical and electroluminescent properties were primarily investigated. It's observed that an increase in the rigid planar structure of the ligand cyclic aromatic hydrocarbons resulted in higher thermal stability, lower band gap values and red-shifted emission spectra. Theoretical calculations indicated that the decrease in the energy gap value of the complex <strong>PyriqPtOXD</strong> was due to the distribution of both the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy level on the platinum atoms and cyclometalated ligands. In addition, the electroluminescence (EL) peak of the devices based on <strong>PyriqPtOXD</strong> reached 742 nm, which was 140 nm red-shifted compared to the <strong>piqPtOXD-</strong>based devices, with a maximum irradiance of 36 <em>μ</em>W/cm² and a maximum external quantum efficiency (<em>EQE</em>_max) of 0.35 %.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123613"},"PeriodicalIF":2.1,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on catalytic performances of ZJU-64 series MOFs with acid-base sites for Knoevenagel condensation","authors":"Lei Rao,&nbsp;Dingsa Dong,&nbsp;Lu Hong,&nbsp;Ke Chen,&nbsp;Yue Sun,&nbsp;Hao Zhang,&nbsp;Lingjing Jiang,&nbsp;Wenxin Lin,&nbsp;Fengfeng Chen","doi":"10.1016/j.jorganchem.2025.123614","DOIUrl":"10.1016/j.jorganchem.2025.123614","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) had unique advantages and attracted much attentions as catalysts for Knoevenagel condensation. In this work, ZJU-64 series MOFs (ZJU-64, ZJU-64-CH₃ and ZJU-64-NH₂) with acid-base sites were synthesized by solvothermal method and employed as heterogeneous catalysts for Knoevenagel condensation. The catalysts showed high catalytic yields in the reaction, which were directly affected by reaction temperature and time. The catalytic yield of ZJU-64 and ZJU-64-CH₃ at 75 °C for 1 hour was 96.92 % and 92.11 %, while that of ZJU-64-NH₂ was 97.76 %, displaying high catalytic yields. Furthermore, they remained activity in Knoevenagel condensation without significant degradation, indicating they were promising polyphase Knoevenagel condensation catalysts. ZJU-64-NH₂ showed excellent catalytic yield and revealed that the introduction of amino group could improve the catalytic performance of Zn-based MOFs.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123614"},"PeriodicalIF":2.1,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functionalized multi-wall carbon nanotube supported Pd: As novel heterogeneous catalysts for the synthesis of dihydropyrimidinones","authors":"Mahdi Fotoohi,&nbsp;Khadijeh Rabiei,&nbsp;Ida Imanvand,&nbsp;Hasan Kabi","doi":"10.1016/j.jorganchem.2025.123611","DOIUrl":"10.1016/j.jorganchem.2025.123611","url":null,"abstract":"<div><div>An efficient, economical, and sustainable protocol for the synthesis of dihydropyrimidinones was developed. In order to achieve this, the MWCNT@CO-Schiff base-Pd catalyst was first successfully synthesized and fully characterized using various techniques such as FT-IR, XRD, EDS, BET, FE-SEM, TEM, EDS mapping, and TG analyses. Subsequently, the activity of synthesized catalyst was investigated for the production of valuable dihydropyrimidinone derivatives. The MWCNT@CO-Schiff base-Pd catalyzed the synthesis of the desired molecules with high efficiency, selectivity, and large cycle numbers. This method is environmentally friendly and offers a novel strategy to synthesize these compounds with an efficiency of over 93 %. The catalyst could be reused up to seven times without noticeable loss of activity. These studies provided valuable insights into the composition and properties of the nanocomposite, expanding our understanding of its potential applications.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123611"},"PeriodicalIF":2.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis of CeO2 nanoparticles supported over silica gel: Its catalytic activity in the synthesis of pyrazolo[3,4-b]pyridines and its performance for the treatment of retinal damage in diabetic rat","authors":"Li Meng ,&nbsp;Min Yang ,&nbsp;Yanlong Li ,&nbsp;Ke Zhang","doi":"10.1016/j.jorganchem.2025.123598","DOIUrl":"10.1016/j.jorganchem.2025.123598","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The preparation of metal nanoparticles formulated by herbal extracts is one of the friendly procedures due to simple, economical, convenient, and environmentally without toxic reagents. So, in current days, several eco-friendly methods for the efficient formulation of cerium oxide nanoparticles are supported over silica gel (SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs) by &lt;em&gt;green tea&lt;/em&gt; aqueous extract as a reducing/stabilizing agent. The features of the obtained SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs by employing such methods as X-ray Diffract meter (XRD), Transmission Electron Microscopy (TEM) and Field Emission Scanning Electron Microscope (FE-SEM). The TEM images showed that the SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs were well-dispersed with average sizes ranging from 10 to 30 nm with spherical shapes over the surface of SiO&lt;sub&gt;2&lt;/sub&gt;. After characterization of SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs, its catalytic activity was investigated in the one pot preparation of pyrazolo[3,4-b]pyridines through multi component condensation of aldehydes, 5-methylpyrazol-3-amine and Meldrum's acid. The related products achieved with good yields and the desired catalyst recycled for 7 run. The impact of SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs on the anti-inflammatory and antioxidant properties of retinal injury in diabetic rats was evaluated through examination. Diabetes was induced in the rats by administering Streptozotocin (60 mg/kg), intraperitoneally. Blood glucose levels were assessed to verify the existence of diabetes in the rats. They were subsequently separated into five distinct groups (&lt;em&gt;n&lt;/em&gt; = 10), which consisted of a control group, a group with diabetic retinopathy that received a saline solution, and a group that was administered SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs (10, 30, and 90 µg/kg) over 8 weeks. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH) were evaluated as retinal tissue oxidative stress parameters. Additionally, the concentration of cytokines (IL10 and TNFα) was also measured. Retinal tissue was obtained for fundus photography, and assessments were conducted for retinal vessel diameter, retinal vascular permeability, and leukocytosis. After the treatment protocol period, the blood samples of diabetic rats were analyzed for blood glucose levels and HbA1c%. The findings of the study revealed that SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs led to a significant reduction in body weight and blood glucose levels in diabetic rats. The SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs -treated group showed a significant enhancement in the levels of SOD, CAT, and GSH activity in comparison to the diabetic retinopathy group. Furthermore, SiO2/CeO2 nanoparticles successfully decreased the elevated levels of TNFα, IL10, and NF-κB in the diabetic rat retina caused by Streptozotocin. The treatment with SiO&lt;sub&gt;2&lt;/sub&gt;/CeO&lt;sub&gt;2&lt;/sub&gt; NPs also led to a notable reduction in vascular permeability and retinal leukocytosis. Moreover, the ut","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123598"},"PeriodicalIF":2.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metallo-phthalocyanines bearing 5,7-dichloro-8-hydroxy-2-methylquinoline substituents: Synthesis, electrochemistry and spectroelectrochemistry","authors":"Ümit Demirbaş ,&nbsp;Nida Elmalı ,&nbsp;Atıf Koca ,&nbsp;Halit Kantekin","doi":"10.1016/j.jorganchem.2025.123599","DOIUrl":"10.1016/j.jorganchem.2025.123599","url":null,"abstract":"<div><div>In this work, 4-((5,7-dichloro-2-methylquinolin-8-yl)oxy)phthalonitrile (<strong>3</strong>) and peripherally tetra 5,7-dichloro-8‑hydroxy-2-methylquinoline substituted zinc(II) (<strong>4</strong>), nickel(II) (<strong>5</strong>), copper(II) (<strong>6</strong>), cobalt(II) (<strong>7</strong>) and manganese (III)chloride (<strong>8</strong>) phthalocyanines were prepared for the first time. Electrochemical characterizations of metallo-phthalocyanines were performed to determine their redox activities and influence of the metal centers and substituent to the redox responses. Peripherally tetra substituted zinc(II) (<strong>4</strong>), nickel(II) (<strong>5</strong>) and copper(II) (<strong>6</strong>) phthalocyanines illustrated very similar redox responses due to the redox inactivity of the Zn²⁺, Ni²⁺and Cu²⁺ central cations. Peripherally tetra substituted cobalt(II) <strong>(7)</strong> and manganese (III)chloride (<strong>8</strong>) phthalocyanines gave metal based electron transfer processes in addition to the phthalocyanine based ones. The reduction processes of cobalt(II) phthalocyanine <strong>(7)</strong> were assigned to [Co^IIPc^2-]/[Co^IPc^2-]^1-, [Co^IPc^2-]^1-/[Co^IPc^3-]^2- and [Co^IPc^3-]^2-/[Co^IPc^4-]^3-[Co^IIPc^2-]/[Co^IIIPc^2-]¹⁺couples and the oxidation processes were assigned to [Co^IIPc^2-]/[Co^IIIPc^2-]¹⁺and [Co^IIIPc^2-]¹⁺/[Co^IIIPc^1-]²⁺couples. For manganese (III) chloride (<strong>8</strong>), [Cl^1--Mn^IIIPc^2-]/[Cl^1--Mn^IIPc^2-]^1-, [Cl^1--Mn^IIPc^2-]^1-/[Cl^1--Mn^IPc^2-]^2-, [Cl^1--Mn^IPc^2-]^2-/[Cl^1--Mn^IPc^3-]^3- and [Cl^1--Mn^IPc^3-]^3-/[Cl^1--Mn^IPc^4-]^4- couples were recorded during the reduction process and [Cl^1--Mn^IIIPc^2-]/[Cl^1--Mn^IIIPc^1-]¹⁺couple was recorded during the oxidation process. Spectral changes observed during the in-situ spectroelectrochemical measurements supported these redox mechanisms. Multi-electron transfer processes and distinct color changes indicated possible usage of novel phthalocyanines in various electrochemical and opto-electrochemical processes.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123599"},"PeriodicalIF":2.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ru-Sn and Ru-Os mixed-metal clusters bearing heterocyclic thiolate ligand(s): Synthesis, crystal and electronic structures","authors":"Md. Monir Hossain ,&nbsp;Vladimir N. Nesterov ,&nbsp;Graeme Hogarth ,&nbsp;German E. Pieslinger ,&nbsp;Shariff E. Kabir ,&nbsp;Shishir Ghosh","doi":"10.1016/j.jorganchem.2025.123593","DOIUrl":"10.1016/j.jorganchem.2025.123593","url":null,"abstract":"<div><div>The synthesis of [Ru₂(CO)₄(SnMe₃)₂(µ-L)₂] (<strong>1–2</strong>) (<strong>1</strong>, <em>L</em> = pySH = pyridine-2-thiol; <strong>2</strong>, <em>L</em> = pymSH = pyrimidine-2-thiol) and their reactions with [M₃(CO)_10-n(NCMe)_n] (<em>M</em> = Ru, Os; <em>n</em> = 0, 2) are described. Ru₂Sn₂ clusters are prepared in moderate yields from the one-pot reaction of [Ru₃(CO)₁₂], Me₃SnCl and pySH in the presence of KOH, and each contains two [Ru(CO)₂(SnPh₃)] units bridged by a pair of heterocyclic thiolate ligands. Treatment of <strong>1</strong>–<strong>2</strong> with [Ru₃(CO)₁₂] in boiling benzene affords pentaruthenium clusters [Ru₅(CO)₁₆(µ₃-L)(µ₄-SnMe)] (<strong>3–4</strong>) containing a raft-like metallic core consisting of five ruthenium and one tin atom. In contrast, reactions of <strong>1</strong>–<strong>2</strong> with [Os₃(CO)₁₀(NCMe)₂] yield tetranuclear clusters [RuOs₃(CO)₁₂(η¹-Me)(µ₃-L)] (<strong>5</strong>, <em>L</em> = pyS; <strong>7</strong>, <em>L</em> = pymS) as the major products, in which the four metal atoms adopt a butterfly geometry, with the ruthenium occupying a wingtip position. Further products including [RuOs₃(CO)₁₂(µ₃-pyS)(µ-H)] (<strong>6</strong>) and [Os₄(CO)₁₂(µ₃-pymS)(η¹-Me)] (<strong>8</strong>) are also isolated from these reactions. Clusters <strong>6</strong> and <strong>8</strong> possess an M₄ butterfly skeleton, with ruthenium in a hinge position in mixed-metal cluster <strong>6</strong>. The molecular structure of each product has been established by XRD analysis, and the bonding in these clusters has been investigated by electronic structure calculations.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123593"},"PeriodicalIF":2.1,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solution-processed red organic light-emitting diodes based on phosphorescent iridium(III) complex with isoquinoline derivative as the main ligand","authors":"Rui Liu,&nbsp;Gan Zhang,&nbsp;Mengyao He,&nbsp;Xiaoli Li,&nbsp;Jie Tang,&nbsp;Yuanli Liu,&nbsp;Song Guo","doi":"10.1016/j.jorganchem.2025.123594","DOIUrl":"10.1016/j.jorganchem.2025.123594","url":null,"abstract":"<div><div>Organic Light-Emitting Diodes (OLEDs) have a broad application prospect in the lighting and display fields. Currently, most OLEDs still rely on the vacuum vapor deposition method, with high cost, low productivity and cumbersome operation. In comparison, the solution method is an attractive technology because of its low cost, simple operation and wide range of material choices. The emission wavelength of iridium(III) complexes can be modulated by rationally changing the ligand structure, and a commonly used strategy is to enhance the conjugation effect of the ligand to achieve efficient red phosphorescence. In view of this, an ionic red phosphorescent iridium(III) complex based on isoquinolyl polycyclic derivatives was designed and synthesized, which exhibited red light in dichloromethane, with the maximum emission peak of 610 nm. Subsequently, the corresponding red phosphorescent OLED was prepared using the solution method to explore its photoelectronic properties, with the maximum luminance of 728 cd/m², CE of 0.34 cd/A, PE of 0.16 lm/W, and EQE of 1.92 %, respectively.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1031 ","pages":"Article 123594"},"PeriodicalIF":2.1,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}