Journal of Organometallic Chemistry最新文献_第6页

Synthesis and properties of diphenylphosphanyl and di-isopropylphosphanyl triphenylsilanes and pentaphenyldisilanes

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-06 DOI: 10.1016/j.jorganchem.2025.123555

Mike Friebel , Uwe Böhme , Edwin Kroke

{"title":"Synthesis and properties of diphenylphosphanyl and di-isopropylphosphanyl triphenylsilanes and pentaphenyldisilanes","authors":"Mike Friebel , Uwe Böhme , Edwin Kroke","doi":"10.1016/j.jorganchem.2025.123555","DOIUrl":"10.1016/j.jorganchem.2025.123555","url":null,"abstract":"<div><div>A new, less hazardous synthetic pathway to chloropentaphenyldisilane, ClSi2Ph5, has been developed. Starting from this compound and lithium diorganophosphides, the two previously unknown diorganophosphanyldisilanes (diphenylphosphanyl)pentaphenyldisilane, Ph2PSi2Ph5, and (di-isopropylphosphanyl)pentaphenyldisilane, (i-Pr)2PSi2Ph5, were prepared. To compare these compounds with the corresponding monosilanes, the known (diphenylphosphanyl)triphenylsilane, Ph2PSiPh3, and the unknown (di-isopropylphosphanyl)triphenylsilane, (i-Pr)2PSiPh3, were prepared, too. The former was prepared via new synthetic routes. The compounds were characterized with IR-, Raman-, 31P-, 29Si-, and 1H NMR spectroscopy and melting point determination. Single crystal structure analyses of ClSi2Ph5 and (i-Pr)2PSiPh3 were carried out and confirm the results presented.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123555"},"PeriodicalIF":2.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388049","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

Investigations into the reactivity of a molybdenocene formamidinate complex

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-05 DOI: 10.1016/j.jorganchem.2025.123556

Joscha Nellesen, Christian Ganter

引用次数: 0

Synthesis of rhodium complexes with chiral diene ligands based on R-carvone

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-03 DOI: 10.1016/j.jorganchem.2025.123554

Tatiana N. Petrushina, Alexey N. Rodionov, Yulia V. Nelyubina, Dmitry S. Perekalin

引用次数: 0

A convenient synthesis of Os3(CO)12 from OsO4 and formic acid

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2024.123480

Elumalai Kumaran, Weng Kee Leong

引用次数: 0

Transesterification of glycerol with dimethyl carbonate for the synthesis of glycerol carbonate and glycidol by Iron (III) salen complex

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2024.123467

Long-Yat Lai, Pak-Chung Lau, Tsz-Lung Kwong, Ka-Fu Yung

{"title":"Transesterification of glycerol with dimethyl carbonate for the synthesis of glycerol carbonate and glycidol by Iron (III) salen complex","authors":"Long-Yat Lai, Pak-Chung Lau, Tsz-Lung Kwong, Ka-Fu Yung","doi":"10.1016/j.jorganchem.2024.123467","DOIUrl":"10.1016/j.jorganchem.2024.123467","url":null,"abstract":"<div><div>The transesterification of glycerol and dimethyl carbonate (DMC) was investigated in the presence of <math><mi>μ</mi></math>-oxo-Fe(salen)2 under the optimal reaction condition. Several transition metal(salen) were tested, and only Fe (salen) shows an excellent results towards transesterification of glycerol. Therefore, Fe (salen) was characterized by IR, elemental analysis, MS, XPS and Surface Basicity test, and it can be confirmed that the as-synthesized Fe(salen) was existed in the form of <math><mi>μ</mi></math>-oxo-Fe(salen)2. It was proposed that the <math><mi>μ</mi></math>-oxo-Fe(salen)2 can provide two different reaction pathway based on its molecular structures and the electronic configuration of iron itself. <math><mi>μ</mi></math>-oxo-Fe(salen)2 was reacted with the mixture of glycerol and DMC under microwave-heating in 60 min at 100 °C and at the molar ratio of glycerol:DMC:<math><mi>μ</mi></math>-oxo-Fe(salen)2 of 1:2:0.01 and obtaining the highest glycerol carbonate yield of 93.8 %.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1025 ","pages":"Article 123467"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138864","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

Sequential phase transfer catalysis–hydrosilylation as an efficient method for the synthesis of polyfluorinated triethoxysilanes

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2024.123483

M.A. Stepanov, Yu.I. Bolgova, O.M. Trofimova, E.F. Belogolova, A.I. Emel'yanov, A.I. Albanov, A.S. Pozdnyakov

{"title":"Sequential phase transfer catalysis–hydrosilylation as an efficient method for the synthesis of polyfluorinated triethoxysilanes","authors":"M.A. Stepanov, Yu.I. Bolgova, O.M. Trofimova, E.F. Belogolova, A.I. Emel'yanov, A.I. Albanov, A.S. Pozdnyakov","doi":"10.1016/j.jorganchem.2024.123483","DOIUrl":"10.1016/j.jorganchem.2024.123483","url":null,"abstract":"<div><div>An efficient approach to obtain of polyfluorinated triethoxysilanes H(CF2)nCH2O(CH2)3Si(OEt)3 with high yields, is presented using a sequential reactions of phase transfer catalysis and hydrosilylation. Tetrabutylammonium bromide and Speier's catalyst (200 ppm) were used as catalysts. The hydrosilylation reaction proceeds rather quickly within 1–3 h under mild conditions at room temperature. 1H NMR monitoring indicates a selective process with the formation of only the main γ-addition product. The individuality of the synthesized triethoxy(polyfluoroalkoxy)propyl silanes have been confirmed by FTIR, 1H, 13C, 19F, and 29Si NMR spectroscopy and elemental analysis. Quantum chemical calculations have shown that with a decrease in the number of electronegative fragments CF2 in the molecule, an increase in the energetic favorability of the hydrosilylation reaction is observed. The prospects for using the obtained fluorosilanes in polymer systems are discussed.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1025 ","pages":"Article 123483"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138992","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

A comparative study of CH and mCH mechanisms in hydrosilylation reactions

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2024.123451

Manxin Hong , Zhengjian Qi , Yu Sun

{"title":"A comparative study of CH and mCH mechanisms in hydrosilylation reactions","authors":"Manxin Hong , Zhengjian Qi , Yu Sun","doi":"10.1016/j.jorganchem.2024.123451","DOIUrl":"10.1016/j.jorganchem.2024.123451","url":null,"abstract":"<div><div>The cyclic process of Si-H oxidation addition, olefin insertion, and reductive elimination was discussed by density functional theory (DFT) and high-precision quantum chemical calculations. All the calculations were performed at the B3LYP-D3/def2-TZVP level. Two fundamental mechanisms of Chalk-Harrod (CH) and modified Chalk-Harrod (mCH) were explored, in the perspective of computational chemistry. Pt(PH3)2 was used as model for the renowned Speier's catalyst, while HSiR (R=(CH3)3 and CH3(OSi(CH3)3)2 and CH2=CHR’ (R’=H, CH2OH and CH2OCH2CH2OH) were used as the reactant models. Significant findings include the identification of the olefin insertion as the rate-determining step in both mechanisms.The energy barrier of rate-determining step was 27.6 kcal/mol and 41.0 kcal/mol, respectively, according to the CH mechanism and the mCH mechanism, when HSi(CH3)3 and CH2=CH2 were used as the reactant models. But the barrier of rate-determining step become to 27.2 kcal/mol and 28.4 kcal/mol, when HSiCH3(OSi(CH3)3)2 and CH2=CHCH2OCH2CH2OH were used as the reactant models. The difference in energy barriers betweeen the CH and mCH mechanisms become closer as the reactant models increase. The reaction between polyhydrosiloxane and allyl polyether may very potentially follow the mCH mechanism rather than CH mechanism.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1025 ","pages":"Article 123451"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139469","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

Application of supported palladium nanoparticles over chitosan-agarose encapsulated Fe3O4 microspheres as efficient catalyst in the Sonogashira cross-coupling reactions

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2025.123553

Ali Kakanejadifard , Parisa Safarimehr , Bikash Karmakar , Mozhgan Pirhayati , Hojat Veisi

{"title":"Application of supported palladium nanoparticles over chitosan-agarose encapsulated Fe3O4 microspheres as efficient catalyst in the Sonogashira cross-coupling reactions","authors":"Ali Kakanejadifard , Parisa Safarimehr , Bikash Karmakar , Mozhgan Pirhayati , Hojat Veisi","doi":"10.1016/j.jorganchem.2025.123553","DOIUrl":"10.1016/j.jorganchem.2025.123553","url":null,"abstract":"<div><div>In this work, a simple and modified method for immobilizing Pd(0) NPs on the surface of dual functionalized magnetic Fe3O4 microspheres with chitosan-agarose (CS-Agar) has been used. The high area surface showed a dispersion of the minuscule Pd NPs. The key role of the CS-Agar hydrogel is to reduce Pd ions via a green pathway, stabilizing them via capping in the process. In order to determine the morphological aspects of the synthesized material, it was subjected to a variety of physicochemical techniques, including FE-SEM (Field Emission Scanning Electron Microscopy) and TEM (Transmission Electron Microscopy). The new material was studied catalytically as a reusable heterogeneous nanocatalyst that is effective in phosphine-free production of a variety of stilbene derivatives using the Sonogashira coupling method. Excellent results were obtained in every reaction, with the exception of chloroarenes and sterically hindered substrates. Without seeing a discernible decline in activity, the catalyst was reused seven times in a row.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123553"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143268005","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

Recent progress in palladium-catalyzed reduction with organosilanes

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2024.123484

Maryam Mirza-Aghayan , Amir Sepehr Moieni

引用次数: 0

Biosynthesis of Mikania micrantha mediated silver nanoparticles: Its application as a sustainable catalyst for Biginelli reaction and antioxidant capacity

IF 2.1 3区化学

Journal of Organometallic Chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jorganchem.2024.123482

Manthae C. Phom , Betokali K. Zhimomi , Putusenla Imchen , Phitovili Sumi , Shisak Sharma , Khonzani Yanthan , Shokip Tumtin , Toka Swu , Tovishe Phucho

{"title":"Biosynthesis of Mikania micrantha mediated silver nanoparticles: Its application as a sustainable catalyst for Biginelli reaction and antioxidant capacity","authors":"Manthae C. Phom , Betokali K. Zhimomi , Putusenla Imchen , Phitovili Sumi , Shisak Sharma , Khonzani Yanthan , Shokip Tumtin , Toka Swu , Tovishe Phucho","doi":"10.1016/j.jorganchem.2024.123482","DOIUrl":"10.1016/j.jorganchem.2024.123482","url":null,"abstract":"<div><div>The current study focuses on the eco-friendly, bio-synthesis and of silver nanoparticles (AgNPs), utilizing an aqueous extract of Mikania micrantha. A rigorous analysis was performed to investigate the effects of several operational factors on the synthesis of AgNPs, including the various quantities of leaf extract, temperature, contact duration, and pH solution. The outcomes demonstrated that the optimal circumstances for producing nanoparticles are Mikania micrantha leaf extract dosage (5 % v/v), pH 9, and 80 °C temperature, with a duration of 60 min incubation time. The bio-synthesized AgNPs were examined using UV–Vis, FT-IR, X-ray diffraction (XRD), FE-SEM, EDX, TEM, and SAED studies. The FT-IR study proved that phytochemicals were involved in the AgNPs production process, and its spherical morphologies with the size range of 12.35 - 46.83 nm were apparent in the TEM images. The face-centered cubic structure of AgNPs was validated by the XRD spectrum. The XRD investigations also substantiated the SAED spectrum's indication that the AgNPs were crystalline. AgNPs were identified as an eco-friendly heterogeneous catalyst, demonstrating high catalytic efficiency in the Biginelli reaction under acid-free, mild conditions, achieving excellent yields in 30 s. 1,1-diphenyl- 2-picrylhydrazyl (DPPH) and Ferric reducing antioxidant power (FRAP) assays were used to assess the biological efficiency showing 89.8 % inhibition activity with an average IC50 value of 24.99± 0.19 µg mL-1 and higher reducing power than the positive control, respectively. This confirms that the leaf extract of Mikania micrantha and its biosynthesized nanoparticles also showed promising antioxidant capability.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1025 ","pages":"Article 123482"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138862","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