Journal of Organometallic Chemistry最新文献

英文中文

Preparation and characterization of nickel hybrid material and its catalytic activity

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-31 DOI: 10.1016/j.jorganchem.2025.123552

R. Bagtache , M. Trari

An organic-inorganic hybrid metal phosphate was synthetized by hydrothermal route at 180 °C. It was characterized by X-ray diffraction (XRD), thermal and chemical analysis, FTIR and NMR spectroscopies, Electron Spin Resonance (ESR), SEM analysis and UV–Visible diffuse reflectance. These analyses allowed us to propose the formula Na[PW₆Ni₃O₂₇][C₂N₂H₁₀]_0.5[C₂N₂H₉]₃·3H₂O (Ni-Ethylene Diamine) and thermal gravimetry shows stability up to 350 °C. Increasing conductivity with temperature indicates a semiconducting behavior with a room temperature conductivity σ₃₀₀ _K of 1.2 × 10^–4 (Ω-cm)^-1. The paramagnetic ion Ni(II) (3d⁷), produces a disturbance in the NMR spectra. The FT-IR spectrum shows peaks at 500 and 730 cm^-1, attributed respectively to Ni-O and W-O bonds while the characteristic peak of PO₄ is observed at 1030 cm^-1. SEM micrograph shows crystals in the form of hexagonal needles with more or less homogeneous shapes (∼ 15 µm) and an average porosity. The UV–Visible spectrum of the hybrid compound shows two bands at 250 and 320 nm, attributed to ligand-metal charge transfer (O^2-: 2p → Ni²⁺: 4 s). The indirect allowed transition (2.30 eV) is assigned to the internal transition of Ni²⁺ (e → t₂). The ESR spectrum indicates a g-factor of 2.005, a signature of Ni²⁺ tetrahedrally bonded to O₂^- ions. The compound was successfully tested in the oxidation of acetaldehyde (CH₃CHO) to acetic acid (CH₃COOH). This study was conducted by varying two parameters namely the temperature (40, 50 and 60 °C) and the nature of the oxidant: H₂O₂ and tert‑butyl hydroxide peroxide. The best result is obtained with H₂O₂ at 60 °C, with an activity twice as high as without catalyst.

{"title":"Preparation and characterization of nickel hybrid material and its catalytic activity","authors":"R. Bagtache , M. Trari","doi":"10.1016/j.jorganchem.2025.123552","DOIUrl":"10.1016/j.jorganchem.2025.123552","url":null,"abstract":"<div><div>An organic-inorganic hybrid metal phosphate was synthetized by hydrothermal route at 180 °C. It was characterized by X-ray diffraction (XRD), thermal and chemical analysis, FTIR and NMR spectroscopies, Electron Spin Resonance (ESR), SEM analysis and UV–Visible diffuse reflectance. These analyses allowed us to propose the formula Na[PW6Ni3O27][C2N2H10]0.5[C2N2H9]3·3H2O (Ni-Ethylene Diamine) and thermal gravimetry shows stability up to 350 °C. Increasing conductivity with temperature indicates a semiconducting behavior with a room temperature conductivity σ300 K of 1.2 × 10–4 (Ω-cm)-1. The paramagnetic ion Ni(II) (3d7), produces a disturbance in the NMR spectra. The FT-IR spectrum shows peaks at 500 and 730 cm-1, attributed respectively to Ni-O and W-O bonds while the characteristic peak of PO4 is observed at 1030 cm-1. SEM micrograph shows crystals in the form of hexagonal needles with more or less homogeneous shapes (∼ 15 µm) and an average porosity. The UV–Visible spectrum of the hybrid compound shows two bands at 250 and 320 nm, attributed to ligand-metal charge transfer (O2-: 2p → Ni2+: 4 s). The indirect allowed transition (2.30 eV) is assigned to the internal transition of Ni2+ (e → t2). The ESR spectrum indicates a g-factor of 2.005, a signature of Ni2+ tetrahedrally bonded to O2- ions. The compound was successfully tested in the oxidation of acetaldehyde (CH3CHO) to acetic acid (CH3COOH). This study was conducted by varying two parameters namely the temperature (40, 50 and 60 °C) and the nature of the oxidant: H2O2 and tert‑butyl hydroxide peroxide. The best result is obtained with H2O2 at 60 °C, with an activity twice as high as without catalyst.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123552"},"PeriodicalIF":2.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351476","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}

引用次数: 0

Ruthenium(II)-Catalyzed Synthesis of N-Heterocycles via Acceptorless Dehydrogenative Condensation

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-31 DOI: 10.1016/j.jorganchem.2025.123545

Chong Zhang , Bowen Hu , Dafa Chen , Wangsheng Liu , Hao Guo

Four bidentate ruthenium(II) complexes 1–4 were tested as catalysts for the synthesis of quinolines via acceptorless dehydrogenative condensation (ADC) strategy, using o-aminobenzyl alcohol and ketones as the starting materials, and complex 4 exhibited the highest activity. With 0.3 mol% catalyst loading and 1.0 equivalent of KOH, 26 quinoline derivatives were isolated in high yields within 2 hours at 120 °C. Moreover, under similar conditions, this multifunctional catalyst is also applicable for the preparation of other N-heterocycles, and a series of naphthyridines, pyridines and pyrroles were generated.

引用次数: 0

Synthesize and characterization of Fe2O3 nanoparticles and its potential as a photocatalyst

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-31 DOI: 10.1016/j.jorganchem.2025.123543

Hadil Jubair Mayouf , Mohammed Faiad Naief , Samar Naser Mohammed , Ahmed Mishaal Mohammed

Methylene blue (MB) is used extensively in medicine; nevertheless, excessive dosages (≥7 mg/kg) of MB can oxidize hemoglobin directly, resulting in methemoglobinemia. Especially in newborns, hemolysis is linked to doses of >15 mg/kg. It may also impede the clinical manifestations of cyanosis and discolor mucosal membranes and secretions. In this work, iron oxide nanoparticles (Fe₂O₃NPs) were synthesized utilizing green chemistry methods using fresh leaves of red cabbage (Brassica oleracea L. var. capitata f, rubra) extract and calcined at 700 °C temperatures to get the hematite phases. In this approach, biomolecules such as alkaloids, steroids, flavonoids, terpenoids, phenolic, flavonoids, anthocyanins, and glucosinolates presence in the red cabbage extract have been shown to work as encapsulating agents for Fe₂O₃NPs. The various physical and chemical characteristics of synthesized Fe₂O₃NPs with spherical solid shapes and having a diameter ranging from 29.03 to 49.13 nm were characterized using FESEM, TEM, XRD, FTIR, and UV–visible spectroscopy techniques. The photocatalytic activity of synthesized Fe₂O₃NPs was tested against methylene blue (MB) under UV-visible light. The photocatalyst degraded approximately 65.5 % of the original MB dye at a rate of 0.0043 min⁻¹ during 240 min of irradiation.

{"title":"Synthesize and characterization of Fe2O3 nanoparticles and its potential as a photocatalyst","authors":"Hadil Jubair Mayouf , Mohammed Faiad Naief , Samar Naser Mohammed , Ahmed Mishaal Mohammed","doi":"10.1016/j.jorganchem.2025.123543","DOIUrl":"10.1016/j.jorganchem.2025.123543","url":null,"abstract":"<div><div>Methylene blue (MB) is used extensively in medicine; nevertheless, excessive dosages (≥7 mg/kg) of MB can oxidize hemoglobin directly, resulting in methemoglobinemia. Especially in newborns, hemolysis is linked to doses of >15 mg/kg. It may also impede the clinical manifestations of cyanosis and discolor mucosal membranes and secretions. In this work, iron oxide nanoparticles (Fe2O3NPs) were synthesized utilizing green chemistry methods using fresh leaves of red cabbage (Brassica oleracea L. var. capitata f, rubra) extract and calcined at 700 °C temperatures to get the hematite phases. In this approach, biomolecules such as alkaloids, steroids, flavonoids, terpenoids, phenolic, flavonoids, anthocyanins, and glucosinolates presence in the red cabbage extract have been shown to work as encapsulating agents for Fe2O3NPs. The various physical and chemical characteristics of synthesized Fe2O3NPs with spherical solid shapes and having a diameter ranging from 29.03 to 49.13 nm were characterized using FESEM, TEM, XRD, FTIR, and UV–visible spectroscopy techniques. The photocatalytic activity of synthesized Fe2O3NPs was tested against methylene blue (MB) under UV-visible light. The photocatalyst degraded approximately 65.5 % of the original MB dye at a rate of 0.0043 min−1 during 240 min of irradiation.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123543"},"PeriodicalIF":2.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143267981","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}

引用次数: 0

The synthesis and structural characterization of 2,2,4,4-tetrabenzyl-1,3,2,4-dithiadigermetane (Bn2GeS)2 and 2,2,4,4-tetrabenzyl-1,3,2,4-diselenadigermetane (Bn2GeSe)2 and their conversion to germanium chalcogenides

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-30 DOI: 10.1016/j.jorganchem.2025.123549

Michael P. Remington Jr., Philip Boudjouk

Two new germanium heterocycles were synthesized, structurally characterized by single crystal x-ray diffraction (SCXRD) and investigated for their thermal conversion to germanium chalcogenides. The heterocycles, (Bn₂GeE)₂, where E = S or Se, and Bn = CH₂C₆H₅, were prepared by the reaction of Na₂E and Bn₂GeCl₂ in THF. The ability to pyrolyze the heterocycles into the Group 14/16 semiconductors GeE was investigated under mild thermal conditions.

引用次数: 0

Coordination compounds of diethyl (5-ethyl-2-hydroxyphenyl)phosphonate with lithium, sodium and potassium. Synthesis, single-crystal X-ray diffraction analysis and FTIR spectroscopic study

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-30 DOI: 10.1016/j.jorganchem.2025.123551

A.A. Bezdomnikov , L.I. Demina , F.M. Dolgushin , V.E. Baulin , S.E. Nefedov , D.V. Baulin , A.Yu. Tsivadze

Dialkyl (5-ethyl-2-hydroxyphenyl)phosphonates are of O-donor ligands and have received considerable attention as a potential extractants for the selective extraction of lithium in the presence of large excesses of sodium and potassium ions. As part of the study of the relationship between the structure of the extractant and the ability to selectively bind lithium ions, the crystal structure of diethyl (5-ethyl-2-hydroxyphenyl)phosphonate HL_Et was established by X-ray diffraction for the first time. HL_Et coordination compounds with lithium, sodium, and potassium were synthesized for the first time; their composition and structure were established by elemental analysis, single-crystal X-ray diffraction analysis, and FTIR spectroscopy. Based on the obtained results, structural regularities of binding of dialkyl (5-ethyl-2-hydroxyphenyl)phosphonates with lithium, sodium and potassium cations were established for the first time. The ability of dialkyl (5-ethyl-2-hydroxyphenyl)phosphonates to form six-membered metallocycles with cations of alkali metals was confirmed.

{"title":"Coordination compounds of diethyl (5-ethyl-2-hydroxyphenyl)phosphonate with lithium, sodium and potassium. Synthesis, single-crystal X-ray diffraction analysis and FTIR spectroscopic study","authors":"A.A. Bezdomnikov , L.I. Demina , F.M. Dolgushin , V.E. Baulin , S.E. Nefedov , D.V. Baulin , A.Yu. Tsivadze","doi":"10.1016/j.jorganchem.2025.123551","DOIUrl":"10.1016/j.jorganchem.2025.123551","url":null,"abstract":"<div><div>Dialkyl (5-ethyl-2-hydroxyphenyl)phosphonates are of O-donor ligands and have received considerable attention as a potential extractants for the selective extraction of lithium in the presence of large excesses of sodium and potassium ions. As part of the study of the relationship between the structure of the extractant and the ability to selectively bind lithium ions, the crystal structure of diethyl (5-ethyl-2-hydroxyphenyl)phosphonate HLEt was established by X-ray diffraction for the first time. HLEt coordination compounds with lithium, sodium, and potassium were synthesized for the first time; their composition and structure were established by elemental analysis, single-crystal X-ray diffraction analysis, and FTIR spectroscopy. Based on the obtained results, structural regularities of binding of dialkyl (5-ethyl-2-hydroxyphenyl)phosphonates with lithium, sodium and potassium cations were established for the first time. The ability of dialkyl (5-ethyl-2-hydroxyphenyl)phosphonates to form six-membered metallocycles with cations of alkali metals was confirmed.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1028 ","pages":"Article 123551"},"PeriodicalIF":2.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357120","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}

引用次数: 0

Novel binary copper-iron phosphate nanoparticles as heterogeneous catalyst for propargylamine, alkene synthesis, and antibacterial efficiency

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-29 DOI: 10.1016/j.jorganchem.2025.123542

amina Berrichi , Mohammed El Amine Drici , Redouane Bachir , Abdelkader Ech-Chergui Nebatti , Francisco José GarcíaGarcía , Mohammed Beldjilali

A novel binary metal nanoparticle catalyst; iron copper phosphate nanoparticles (FeCuP), was synthesized via a hydrothermal route under mild conditions without surfactants or post-treatment uses. Three variants of the catalyst, FeCuP1, FeCuP2, and FeCuP3, were prepared using different urea amounts. Characterization techniques, including Infrared Spectroscopy (IR), X-ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS), Brunauer-Emmett-Teller (BET), Transmission Electron Microscopy (TEM), and XPS were employed to analyze the catalysts. The results reveal the impact of urea on nanoparticles formation, and surface structure. Among the variants, the FeCuP2 catalystexhibited the highest surface area (99 m²/g) and particle sizes below 10 nm.FeCuP2 nanoparticles demonstrated exceptional catalytic performance in the synthesis of propargylamines and alkenes through amine, aldehyde, and alkyne coupling (A3 coupling) and Knoevenagel condensation respectively, achieving high yields (100 %) and stability. Notably, FeCuP2 nanoparticles retained its catalytic activity over seven cycles of reuse. Furthermore, all catalyst samples displayed antibacterial properties, where the FeCuP2 nanoparticles showing the highest inhibitory activity against both gram-negative and gram-positive bacteria.

{"title":"Novel binary copper-iron phosphate nanoparticles as heterogeneous catalyst for propargylamine, alkene synthesis, and antibacterial efficiency","authors":"amina Berrichi , Mohammed El Amine Drici , Redouane Bachir , Abdelkader Ech-Chergui Nebatti , Francisco José GarcíaGarcía , Mohammed Beldjilali","doi":"10.1016/j.jorganchem.2025.123542","DOIUrl":"10.1016/j.jorganchem.2025.123542","url":null,"abstract":"<div><div>A novel binary metal nanoparticle catalyst; iron copper phosphate nanoparticles (FeCuP), was synthesized via a hydrothermal route under mild conditions without surfactants or post-treatment uses. Three variants of the catalyst, FeCuP1, FeCuP2, and FeCuP3, were prepared using different urea amounts. Characterization techniques, including Infrared Spectroscopy (IR), X-ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS), Brunauer-Emmett-Teller (BET), Transmission Electron Microscopy (TEM), and XPS were employed to analyze the catalysts. The results reveal the impact of urea on nanoparticles formation, and surface structure. Among the variants, the FeCuP2 catalystexhibited the highest surface area (99 m²/g) and particle sizes below 10 nm.FeCuP2 nanoparticles demonstrated exceptional catalytic performance in the synthesis of propargylamines and alkenes through amine, aldehyde, and alkyne coupling (A3 coupling) and Knoevenagel condensation respectively, achieving high yields (100 %) and stability. Notably, FeCuP2 nanoparticles retained its catalytic activity over seven cycles of reuse. Furthermore, all catalyst samples displayed antibacterial properties, where the FeCuP2 nanoparticles showing the highest inhibitory activity against both gram-negative and gram-positive bacteria.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1028 ","pages":"Article 123542"},"PeriodicalIF":2.1,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143322262","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}

引用次数: 0

Hydrosilylation or dehydrogenative silylation pathways via the Au-catalyzed activation of hydrosilanes

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-28 DOI: 10.1016/j.jorganchem.2025.123546

Maria Ioanna Karapanou , Marios Kidonakis , Dimitra Malliotaki , Elisavet-Maria Zantioti-Chatzouda , Manolis Stratakis

Apart from the abundantly existing metal-catalyzed protocols regarding the hydrosilylation of organic functional groups, gold, mainly in the form of small metallic Au(0) nanoclusters and in certain cases as Au(I) or Au(III), has exhibited during the past two decades a remarkable catalytic activity. The pathways of hydrosilane activation by Au(0) nanocatalysts are often unprecedented. In this review article we present all aspects of hydrosilylation reactions catalyzed by Au, involving carbonyl compounds, alkynes, alkenes, allenes, imines, etc., emphasizing the proposed mechanisms. In addition, Au in various oxidation states can catalyze dehydrogenative silylation, not only with H₂O, alcohols, silanols, amines or amides, but with alkynes and aromatic compounds.

引用次数: 0

Thienylquinoline-based ionic Iridium(III) complexes as highly efficient Sonosensitizers for Sonodynamic therapy

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-28 DOI: 10.1016/j.jorganchem.2025.123547

Zhuang Lv , Pei Zhang , Ke Hua , Jiayang Jiang

Sonodynamic therapy (SDT) is an emerging cancer therapeutic method whose mechanism is very similar to that of photodynamic therapy (PDT), with the primary difference being that its excitation source is ultrasound. Hence, SDT has significantly a greater penetration depth, making it more suitable for treating deep-seated tumors. Sonosensitizers, as a key component of SDT, can be excited by ultrasound and generate reactive oxygen species (ROS). In this work, two novel ionic iridium(III) complexes (Ir1 and Ir2) bearing a 4-methyl-2-(thiophen-2-yl)quinolone cyclometalating ligand are synthesized, and their photophysical properties, sono-chemical properties and in vitro SDT are studied. Ir1 and Ir2 have long excited-state lifetimes and exhibit good stability under ultrasound and at different pH values. These two iridium(III) complexes can generate singlet oxygen under ultrasound both in solution and in cells. They show good biocompatibility in the absence of ultrasound and high toxicity in the presence of ultrasound, indicating their great potential for sonodynamic therapy applications.

{"title":"Thienylquinoline-based ionic Iridium(III) complexes as highly efficient Sonosensitizers for Sonodynamic therapy","authors":"Zhuang Lv , Pei Zhang , Ke Hua , Jiayang Jiang","doi":"10.1016/j.jorganchem.2025.123547","DOIUrl":"10.1016/j.jorganchem.2025.123547","url":null,"abstract":"<div><div>Sonodynamic therapy (SDT) is an emerging cancer therapeutic method whose mechanism is very similar to that of photodynamic therapy (PDT), with the primary difference being that its excitation source is ultrasound. Hence, SDT has significantly a greater penetration depth, making it more suitable for treating deep-seated tumors. Sonosensitizers, as a key component of SDT, can be excited by ultrasound and generate reactive oxygen species (ROS). In this work, two novel ionic iridium(III) complexes (Ir1 and Ir2) bearing a 4-methyl-2-(thiophen-2-yl)quinolone cyclometalating ligand are synthesized, and their photophysical properties, sono-chemical properties and in vitro SDT are studied. Ir1 and Ir2 have long excited-state lifetimes and exhibit good stability under ultrasound and at different pH values. These two iridium(III) complexes can generate singlet oxygen under ultrasound both in solution and in cells. They show good biocompatibility in the absence of ultrasound and high toxicity in the presence of ultrasound, indicating their great potential for sonodynamic therapy applications.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123547"},"PeriodicalIF":2.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143268004","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}

引用次数: 0

Long-chain PdIICoII paddle wheel carboxylate complexes: Synthesis, thermal analysis and electrochemistry

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-28 DOI: 10.1016/j.jorganchem.2025.123548

Ebrahiem Botha , Alice Brink , Elizabeth Erasmus

Mixed-metal carboxylate complexes were synthesized by reacting one equivalent of [Pd₃^II(μ-OOC(CH₂)_nCH₃)₆] with three equivalents of [Co^II(OOC(CH₂)_nCH₃)₂] where n = 4, 6, 8, or 10. This reaction resulted in the formation of [Pd^IICo^II(µ-OOC(CH₂)_nCH₃)₄] where n = 4, 6, 8, or 10. Characterisation via ATR-FTIR revealed that mixed-metal complexes exhibit multiple coordination modes, including unidentate, bidentate, tridendate, and bridging (syn-syn) binding modes. The single crystal X-ray structure of [Pd^IICo^II(μ-OOC(CH₂)₈CH₃)₄] (Z = 2, space group P2₁/c) confirmed the binding modes observed in the ATR-FTIR studies.

Cyclic Voltammetry of [Pd₃^II(μ-OOC(CH₂)_nCH₃)₆] and [Pd^IICo^II(µ-OOC(CH₂)_nCH₃)₄] where n = 4, 6, 8, or 10 demonstrated that the redox process for Pd⁰ → Pd^II were both chemically and electrochemically irreversible. Furthermore, [Pd^IICo^II(µ-OOC(CH₂)_nCH₃)₄] did not exhibit an oxidation wave. Additionally, a progressive decrease in negative reduction of the Pd was observed with increasing carbon chain length.

TGA-MS analysis identified volatile decomposition products such as methane, hydroxide ions, water, carbon monoxide, oxygen, methanol, propyne, carbon dioxide and other species. The non-volatile decomposition residues consisted of metal oxides.

{"title":"Long-chain PdIICoII paddle wheel carboxylate complexes: Synthesis, thermal analysis and electrochemistry","authors":"Ebrahiem Botha , Alice Brink , Elizabeth Erasmus","doi":"10.1016/j.jorganchem.2025.123548","DOIUrl":"10.1016/j.jorganchem.2025.123548","url":null,"abstract":"<div><div>Mixed-metal carboxylate complexes were synthesized by reacting one equivalent of [Pd3II(μ-OOC(CH2)nCH3)6] with three equivalents of [CoII(OOC(CH2)nCH3)2] where n = 4, 6, 8, or 10. This reaction resulted in the formation of [PdIICoII(µ-OOC(CH2)nCH3)4] where n = 4, 6, 8, or 10. Characterisation via ATR-FTIR revealed that mixed-metal complexes exhibit multiple coordination modes, including unidentate, bidentate, tridendate, and bridging (syn-syn) binding modes. The single crystal X-ray structure of [PdIICoII(μ-OOC(CH2)8CH3)4] (Z = 2, space group P21/c) confirmed the binding modes observed in the ATR-FTIR studies.</div><div>Cyclic Voltammetry of [Pd3II(μ-OOC(CH2)nCH3)6] and [PdIICoII(µ-OOC(CH2)nCH3)4] where n = 4, 6, 8, or 10 demonstrated that the redox process for Pd0 → PdII were both chemically and electrochemically irreversible. Furthermore, [PdIICoII(µ-OOC(CH2)nCH3)4] did not exhibit an oxidation wave. Additionally, a progressive decrease in negative reduction of the Pd was observed with increasing carbon chain length.</div><div>TGA-MS analysis identified volatile decomposition products such as methane, hydroxide ions, water, carbon monoxide, oxygen, methanol, propyne, carbon dioxide and other species. The non-volatile decomposition residues consisted of metal oxides.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123548"},"PeriodicalIF":2.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143267980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supported silver nanoparticles over starch-modified magnetic nanoparticles: Characterization, Its application for A3 coupling reactions, analgesic and anesthetic activities

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-01-27 DOI: 10.1016/j.jorganchem.2025.123544

Junwei Lu , Meilan Zhang , Attalla F. El-kott , Mohammed A. AlShehri , Sally Negm , Ali S. AlSheri

This study focuses on the synthesis and characterization of silver nanoparticles (Ag NPs) supported on starch-coated magnetic Fe₃O₄ nanoparticles (Fe₃O₄-starch/Ag NPs) using a green approach, which avoids the use of any harmful or toxic reducing agents and stabilizers. The structural and textural properties of the nanocomposite were thoroughly examined using various physicochemical techniques, including TEM, FE-SEM, EDX, VSM, XRD and ICP-OES. The potential of Fe₃O₄-starch/Ag NPs as a catalyst in the aldehyde-alkyne-amine (A³) coupling reaction for the synthesis of propargylamine derivatives was also explored. This catalytic system offers significant benefits such as high catalytic efficiency, simplicity, environmental sustainability, and excellent reaction yields. The local anesthetic effects were assessed in models of frogs and guinea pigs, revealing noteworthy efficacy in both animal species. The analgesic effects were evaluated in mice by administering various doses orally. Writhing episodes caused by acetic acid were notably decreased in a manner that depended on the dosage. Furthermore, an assessment was conducted to determine the anti-inflammatory effects of the identical dosage. After being administered orally, the inflammation in the paws of mice induced by carrageenin, a commonly used inflammatory agent, was noticeably reduced. The Fe₃O₄-starch/Ag NPs nanocomposite shows promise as a groundbreaking therapeutic medication in the future, demonstrating analgesic, anti-inflammatory effects, and local anesthetic qualities.

{"title":"Supported silver nanoparticles over starch-modified magnetic nanoparticles: Characterization, Its application for A3 coupling reactions, analgesic and anesthetic activities","authors":"Junwei Lu , Meilan Zhang , Attalla F. El-kott , Mohammed A. AlShehri , Sally Negm , Ali S. AlSheri","doi":"10.1016/j.jorganchem.2025.123544","DOIUrl":"10.1016/j.jorganchem.2025.123544","url":null,"abstract":"<div><div>This study focuses on the synthesis and characterization of silver nanoparticles (Ag NPs) supported on starch-coated magnetic Fe3O4 nanoparticles (Fe3O4-starch/Ag NPs) using a green approach, which avoids the use of any harmful or toxic reducing agents and stabilizers. The structural and textural properties of the nanocomposite were thoroughly examined using various physicochemical techniques, including TEM, FE-SEM, EDX, VSM, XRD and ICP-OES. The potential of Fe3O4-starch/Ag NPs as a catalyst in the aldehyde-alkyne-amine (A3) coupling reaction for the synthesis of propargylamine derivatives was also explored. This catalytic system offers significant benefits such as high catalytic efficiency, simplicity, environmental sustainability, and excellent reaction yields. The local anesthetic effects were assessed in models of frogs and guinea pigs, revealing noteworthy efficacy in both animal species. The analgesic effects were evaluated in mice by administering various doses orally. Writhing episodes caused by acetic acid were notably decreased in a manner that depended on the dosage. Furthermore, an assessment was conducted to determine the anti-inflammatory effects of the identical dosage. After being administered orally, the inflammation in the paws of mice induced by carrageenin, a commonly used inflammatory agent, was noticeably reduced. The Fe3O4-starch/Ag NPs nanocomposite shows promise as a groundbreaking therapeutic medication in the future, demonstrating analgesic, anti-inflammatory effects, and local anesthetic qualities.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123544"},"PeriodicalIF":2.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388050","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}

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Journal of Organometallic Chemistry

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀