Journal of Organometallic Chemistry最新文献_第7页

Organometallic iron(III) complexes supported by MePhTIM macrocycle: An attempt of π-acidity tuning MePhTIM大环负载的金属有机铁（III）配合物：π-酸度调节的尝试

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-08-05 DOI: 10.1016/j.jorganchem.2025.123800

Prakhar Gautam, Nyah A. Anderson, Ian M. Frederick, Tong Ren

{"title":"Organometallic iron(III) complexes supported by MePhTIM macrocycle: An attempt of π-acidity tuning","authors":"Prakhar Gautam, Nyah A. Anderson, Ian M. Frederick, Tong Ren","doi":"10.1016/j.jorganchem.2025.123800","DOIUrl":"10.1016/j.jorganchem.2025.123800","url":null,"abstract":"<div><div>Reported herein are the syntheses and characterization of the phenylacetylide complex trans-[Fe(III)(MePhTIM)(C2Ph)2]+(2), σ−phenyl complex trans-[Fe(III)(MePhTIM)(Ph)2]+(3), and their precursor trans-[Fe(III)(MePhTIM)Cl2]+(1), all of which are supported by the tetra-imine macrocycle MePhTIM (2,9,-dimethyl-3,10-diphenyl-1,4,8,11-tetraazacyclotetradeca-1,3,8,10-tetraene). All the new complexes were investigated using mass spectrometry, electronic absorption spectroscopy and cyclic and differential pulse voltammetry techniques. The molecular structures of compounds 1, 2, and 3 were established using single-crystal X-ray diffraction analysis, and their electronic structures (both ground and excited state) analyzed using density functional theory (DFT) calculations. The complexes display rich redox characteristics including a reversible FeIII/II reduction and a MePhTIM reduction. TD-DFT calculations show that the introduction of MePhTIM-based π(phenyl) orbitals, namely π(phenylmacro), yields new charge transfer bands for 1 and 2. Furthermore, a greater stabilization of the Fe dπ orbitals for all complexes in comparison to their analogous TIM (2,3,9,10-tetramethyl-1,4,8,11-tetraazacyclotetradeca-1,3,8,10-tetraene) counterparts is evident from electrochemistry and DFT results.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123800"},"PeriodicalIF":2.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781746","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

Preferred catalysts and their supports for methane to hydrogen conversion 甲烷制氢的首选催化剂及其载体

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-08-05 DOI: 10.1016/j.jorganchem.2025.123794

Wael Almusattar , Suriati Sufian , Noorfidza Yub Harun , Hayyiratul Fatimah Mohd Zaid , Bavaaneay Balachandran , Kunmi Joshua Abioye

{"title":"Preferred catalysts and their supports for methane to hydrogen conversion","authors":"Wael Almusattar , Suriati Sufian , Noorfidza Yub Harun , Hayyiratul Fatimah Mohd Zaid , Bavaaneay Balachandran , Kunmi Joshua Abioye","doi":"10.1016/j.jorganchem.2025.123794","DOIUrl":"10.1016/j.jorganchem.2025.123794","url":null,"abstract":"<div><div>Many methods for creating catalysts to synthesize hydrogen as an energy carrier have been thoroughly investigated. One promising approach is the decomposition of methane, which produces hydrogen from hydrocarbons without releasing greenhouse gases like carbon dioxide. Using an appropriate catalyst with suitable support and synthesis techniques can lower the high temperatures typically required to break strong C–H bonds. Transition metal-based catalysts, particularly those using non-noble metals, are favored for their activity, selectivity, and cost-effectiveness. This review presents an overview of the methane decomposition process, focusing on recent advances in catalyst design, including mechanisms and performance of metals such as Ni, Cu, Fe, Co, Pd, Pt, and Mg. Various metal preparation methods and their impact on catalytic efficiency are also discussed. The study concludes that Ni exhibited the highest catalytic activity, making it the most effective metal for hydrogen production, while Mg showed the lowest performance. Among the catalyst supports, Al₂O₃ was the most widely used due to its high surface area and stable structure, which contributed significantly to enhancing catalyst activity.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123794"},"PeriodicalIF":2.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830255","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

Chitosan-functionalized magnetic nanoparticles for the immobilization of palladium nanoparticles: Synthesis, characterization, and application as an effective nanocatalyst for the Heck-Mizoroki coupling reaction in water 壳聚糖功能化磁性纳米颗粒固定化钯纳米颗粒：合成、表征和作为水中Heck-Mizoroki偶联反应有效纳米催化剂的应用

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-31 DOI: 10.1016/j.jorganchem.2025.123793

Ali B.M. Ali , Ahmed A․ Mohammed , Maher Ali Rusho , Mutabar Latipova , Sardor Sabirov , Elangovan Muniyandy , M.A. Diab , Heba A. El-Sabban , Shahad Muthana Qasim , A.I. Ali , Saiful Islam , Abdul Saddique Shaik

{"title":"Chitosan-functionalized magnetic nanoparticles for the immobilization of palladium nanoparticles: Synthesis, characterization, and application as an effective nanocatalyst for the Heck-Mizoroki coupling reaction in water","authors":"Ali B.M. Ali , Ahmed A․ Mohammed , Maher Ali Rusho , Mutabar Latipova , Sardor Sabirov , Elangovan Muniyandy , M.A. Diab , Heba A. El-Sabban , Shahad Muthana Qasim , A.I. Ali , Saiful Islam , Abdul Saddique Shaik","doi":"10.1016/j.jorganchem.2025.123793","DOIUrl":"10.1016/j.jorganchem.2025.123793","url":null,"abstract":"<div><div>This research detailed the eco-friendly fabrication of magnetic chitosan material immobilized by palladium nanoparticles (Pd NPs), accompanied by a comprehensive evaluation of its catalytic efficiency. The Fe3O4/CHT composite have been specifically engineered to act as a sustainable capping template, efficiently attaching Pd ions, which were then reduced with the help of Artemisia absinthium extract. The structural and physicochemical characteristics of the produced Fe3O4/CHT-Pd NPs were assessed using various analytical methods, including FE-SEM, EDS, TEM, elemental mapping, VSM, and ICP. After characterization, we successfully applied the Fe3O4/CHT-Pd NPs as a catalyst in the Heck-Mizoroki reaction, involving different haloarenes and styrene. This catalyst offers notable advantages, such as simple preparation, easy isolation from the reaction mixture, reusability for at least 7 cycles without notable loss of effectiveness, and stability under reaction conditions, along with significantly improved catalytic activity compared to numerous other catalysts documented in the current literature.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123793"},"PeriodicalIF":2.1,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809962","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

Design and fabrication of chitosan functionalized magnetic composite anchored Ru nanoparticles as a sustainable organometallic nanocatalyst for Suzuki-Miyaura coupling 壳聚糖功能化磁性复合锚定钌纳米颗粒作为铃木-宫浦偶联可持续有机金属纳米催化剂的设计与制备

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-28 DOI: 10.1016/j.jorganchem.2025.123790

Ali M Hussein , Maher Ali Rusho , Narinderjit Singh Sawaran Singh , Elangovan Muniyandy , Akmal Abilkasimov , Mutabar Latipova , Salman Khalaf Issa , Aseel Smerat , A.I. Ali , Saiful Islam , Mohd Abul Hasan

{"title":"Design and fabrication of chitosan functionalized magnetic composite anchored Ru nanoparticles as a sustainable organometallic nanocatalyst for Suzuki-Miyaura coupling","authors":"Ali M Hussein , Maher Ali Rusho , Narinderjit Singh Sawaran Singh , Elangovan Muniyandy , Akmal Abilkasimov , Mutabar Latipova , Salman Khalaf Issa , Aseel Smerat , A.I. Ali , Saiful Islam , Mohd Abul Hasan","doi":"10.1016/j.jorganchem.2025.123790","DOIUrl":"10.1016/j.jorganchem.2025.123790","url":null,"abstract":"<div><div>In this research, a magnetic nanocatalyst referred to as Fe3O4/Si@CS-Ru NPs was created through the initial formation of Fe3O4 nanoparticles coated by silica layers, followed by the modification of the surface with chitosan, and concluding with the incorporation of Ru nanoparticles as the active catalytic elements. The resulting structure delivers a durable, magnetically recyclable nanocomposite with exceptional catalytic performance. Advanced characterization techniques, including SEM, TEM, EDX, EDX-Mapping, VSM, and ICP-OES, were applied to validate the properties and chemical structure of the nanocatalyst. The developed nanocatalyst was applied in the Suzuki-Miyaura coupling to create C–C bonds. The Fe3O4/Si@CS-Ru NPs displayed a high level of catalytic efficiency, showing excellent results with a range of aromatic halides. Additionally, the catalyst shown impressive magnetic recyclability, maintaining its efficacy even after 7 reaction cycles. A hot filtration experiment confirmed the heterogeneous nature of the catalyst, as no leaching was detected throughout the reaction procedure.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123790"},"PeriodicalIF":2.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749524","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

Silver-catalyzed/NBS-mediated regioselective bromophosphoryloxylation of alkynes with P(O)-OH bonds 银催化/ nbs介导的带有P(O)-OH键的炔的区域选择性溴磷酰化反应

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-25 DOI: 10.1016/j.jorganchem.2025.123789

Peng Wang , Pei-Pei You , Weifeng Xu , Longzhi Zhu , Biquan Xiong

引用次数: 0

Revisiting [Fe(bipy)2Et2]: electronic structure and new considerations on the thermal decomposition mechanism 重述[Fe(bipy)2Et2]：电子结构及对热分解机理的新思考

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-24 DOI: 10.1016/j.jorganchem.2025.123787

Rinaldo Poli

{"title":"Revisiting [Fe(bipy)2Et2]: electronic structure and new considerations on the thermal decomposition mechanism","authors":"Rinaldo Poli","doi":"10.1016/j.jorganchem.2025.123787","DOIUrl":"10.1016/j.jorganchem.2025.123787","url":null,"abstract":"<div><div>The present computational investigation discredits a previously proposed mechanism for the thermal decomposition of the title compound in THF, according to which β-H elimination from one Et ligand would occur after an initial rearrangement of one bipy ligand from κ2 to κ1. It is alternatively proposed that the initial step is full replacement of one bipy ligand with one solvent molecule, to yield 5-coordinate [(bipy)(THF)FeEt2]. The title compound, the 5-coordinate [(κ2-bipy)(κ1-bipy)FeEt2], the 5-coordinate [(bipy)(THF)FeEt2] and the 6-coordinate [(bipy)(THF)2FeEt2] complexes have been analyzed in all possible spin states. While [(bipy)2FeEt2] is diamagnetic, but suggested by the calculation to rather adopt an open-shell (broken-symmetry) singlet with a low spin (S = ½) FeIII and non-innocent bipy ligands, [(bipy)2]•-, the other three systems have a broken-symmetry triplet ground state (S = 1 overall) with an intermediate spin (S = 3/2) FeIII. The low computed Gibbs energy cost for the bipy/THF substitution (5.6 kcal mol-1) makes [(bipy)(THF)FeEt2] a kinetically competent intermediate. Full bipy dissociation prior to the β-H elimination step is also consistent with the previously observed dependence of the decomposition rate on the solvent donor properties.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123787"},"PeriodicalIF":2.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713499","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

Organometallic catalysts for lignin depolymerization 木质素解聚的有机金属催化剂

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-24 DOI: 10.1016/j.jorganchem.2025.123788

Julian Skagfjörd Reinhold , Wenqing Zhu , Aiqin Wang , Bo Zhang , Tao Zhang

引用次数: 0

Magnetically retrievable nanocatalysis for eco-friendly synthesis of functional chromenes: Sustainable innovations and insights 磁性可回收纳米催化生态合成功能铬：可持续的创新和见解

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-23 DOI: 10.1016/j.jorganchem.2025.123786

U.P. Patil , Rupesh C. Patil , S.U. Patil

{"title":"Magnetically retrievable nanocatalysis for eco-friendly synthesis of functional chromenes: Sustainable innovations and insights","authors":"U.P. Patil , Rupesh C. Patil , S.U. Patil","doi":"10.1016/j.jorganchem.2025.123786","DOIUrl":"10.1016/j.jorganchem.2025.123786","url":null,"abstract":"<div><div>Magnetic Fe3O4 nanocatalysts have gained unique importance in the catalysis community due to their unprecedented properties, including high surface area, thermal and chemical stability, elevated saturation magnetization, high degree of spin polarization, ease of separation with an external magnet, and versatile functionality. Fe3O4 nanocatalysts can play a prominent role in the sustainable synthesis of diverse and densely functionalized chromenes, as they are a cost-effective alternative while being an efficient and user-friendly material. This review highlights the eco-friendly synthesis of functionalized chromenes employing task-specific Fe3O4 nanocatalysts, emphasizing recent advancements in magnetite functionalization to improve catalytic activity and selectivity. Moreover, we address the challenges, possible future development directions, and opportunities in synthesizing potent bioactive chromenes over magnetic Fe3O4-based catalysts. This review will inspire further research to explore novel Fe3O4 catalysts and their implications in heterocyclization.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123786"},"PeriodicalIF":2.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144757940","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

Copper (II) oxide immobilized chitosan-alginate modified magnetic bio-nanocatalyst for CN and CC couplings 铜（II）氧化物固定化壳聚糖-海藻酸盐修饰的CN和CC偶联磁性生物纳米催化剂

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-18 DOI: 10.1016/j.jorganchem.2025.123761

Kiran Bagade, Arjun Kumbhar

{"title":"Copper (II) oxide immobilized chitosan-alginate modified magnetic bio-nanocatalyst for CN and CC couplings","authors":"Kiran Bagade, Arjun Kumbhar","doi":"10.1016/j.jorganchem.2025.123761","DOIUrl":"10.1016/j.jorganchem.2025.123761","url":null,"abstract":"<div><div>A novel and efficient copper (II) oxide immobilized chitosan-alginate modified magnetic bio-nanocatalyst (CuO@Fe3O4/CS/Alg) has been designed, synthesized, and employed for C<img>N and C<img>C coupling reactions. Various spectroscopic and microscopic techniques were used to characterize the CuO@Fe3O4/CS/Alg bio-nanocatalyst. The catalytic activity of CuO@Fe3O4/CS/Alg has been explored for Chan-Lam and Suzuki-Miyaura coupling reactions under various reaction conditions. A group of substituted biaryls and secondary aryl amines has been synthesized with 80 to 94 % yields. The heterogeneity of the bio-nanocatalyst was examined using a hot filtration test and a reusability study. The bio-nanocatalyst exhibited effective saturation magnetization (56.30 emu/g), which facilitates its easy separation from the reaction mixture by an external magnet. The separated bio-nanocatalyst could be recycled up to six reaction cycles for both the coupling reactions. Eco-benign catalytic system, moderate temperature, and high yields of product in short reaction time are the key features of the present protocol.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123761"},"PeriodicalIF":2.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704257","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

Exploration of monomeric and dimeric palladacyles complexes: Spectroscopic, biological, molecular docking and X-ray crystal structures of [Pd(PPh3)(bhquin)(sac)] 单聚和二聚钯环配合物的探索：[Pd(PPh3)(bhquin)(sac)]的光谱、生物学、分子对接和x射线晶体结构

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-07-17 DOI: 10.1016/j.jorganchem.2025.123774

Zana S. Afandi , Tarek A. Yousef , Ahmed S.M. Al-Janabi , Christoph Wagner , Ahmed S. Faihan , Ramy A. Bedier , Hela Ferjani , Abdullah Al-Dakhil , Saad Shaaban , Subhi A. Al-Jibori

{"title":"Exploration of monomeric and dimeric palladacyles complexes: Spectroscopic, biological, molecular docking and X-ray crystal structures of [Pd(PPh3)(bhquin)(sac)]","authors":"Zana S. Afandi , Tarek A. Yousef , Ahmed S.M. Al-Janabi , Christoph Wagner , Ahmed S. Faihan , Ramy A. Bedier , Hela Ferjani , Abdullah Al-Dakhil , Saad Shaaban , Subhi A. Al-Jibori","doi":"10.1016/j.jorganchem.2025.123774","DOIUrl":"10.1016/j.jorganchem.2025.123774","url":null,"abstract":"<div><div>Novel cyclometalated palladium(ІІ) complexes type mono nuclear [Pd(PPh3)(bhquin)(sac)](2) (PPh3= triphenylphosphine) and binuclear [Pd2(sac)2(µ-p^p)(bhquin)2] (3–7) (p^p = Ph2PCH2PPh2 (dppm), Ph2P(CH2)2PPh2 (dppe), Ph2P(CH2)3PPh2 (dppp), Ph2P(CH2)4PPh2 (dppb), (Ph2PC5H4)2Fe (dppf) were obtained from the reaction of the binuclear saccharinato complex [Pd(µ-sac)bhquin]2 (1) (sac = saccharinate, bhquin= deprotonated benzoquinolate ) reacts with one-mole diphosphine or two mole of mono phosphine ligands, respectively. It is worth noting that in complexes 3, 4, and 5, a nitrogen atom of one molecule bhquinuin is trans to the phosphorus atom of the diphosphine, and the other molecule carbon of bhquin is trans to the phosphorus atom of the diphosphine. On the other hand, in complexes 6 and 7, the nitrogen atom of bhquin is trans to the phosphorus atom of the diphosphine. The new complexes were characterized by electric conductance, elemental analysis, and different spectroscopic methods (IR, 1H-, 31P-NMR) as well as X-ray crystallography. A comparison between the bond lengths and angles was calculated using Density Functional Theory (DFT). Molecular docking studies were also performed to assay the antibacterial potential of the prepared compounds.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1039 ","pages":"Article 123774"},"PeriodicalIF":2.1,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704256","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