Pub Date : 2025-01-30DOI: 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.
{"title":"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","authors":"Michael P. Remington Jr., Philip Boudjouk","doi":"10.1016/j.jorganchem.2025.123549","DOIUrl":"10.1016/j.jorganchem.2025.123549","url":null,"abstract":"<div><div>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, (Bn<sub>2</sub>GeE)<sub>2</sub>, where <em>E</em> = <em>S</em> or Se, and Bn = CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>, were prepared by the reaction of Na<sub>2</sub>E and Bn<sub>2</sub>GeCl<sub>2</sub> in THF. The ability to pyrolyze the heterocycles into the Group 14/16 semiconductors GeE was investigated under mild thermal conditions.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1028 ","pages":"Article 123549"},"PeriodicalIF":2.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357117","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}
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.
{"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 <strong>HL<sub>Et</sub></strong> was established by X-ray diffraction for the first time. <strong>HL<sub>Et</sub></strong> 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}
Pub Date : 2025-01-29DOI: 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}
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.
{"title":"Hydrosilylation or dehydrogenative silylation pathways via the Au-catalyzed activation of hydrosilanes","authors":"Maria Ioanna Karapanou , Marios Kidonakis , Dimitra Malliotaki , Elisavet-Maria Zantioti-Chatzouda , Manolis Stratakis","doi":"10.1016/j.jorganchem.2025.123546","DOIUrl":"10.1016/j.jorganchem.2025.123546","url":null,"abstract":"<div><div>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 H<sub>2</sub>O, alcohols, silanols, amines or amides, but with alkynes and aromatic compounds.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1029 ","pages":"Article 123546"},"PeriodicalIF":2.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351477","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}
Pub Date : 2025-01-28DOI: 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 <em>in vitro</em> 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}
Pub Date : 2025-01-28DOI: 10.1016/j.jorganchem.2025.123548
Ebrahiem Botha , Alice Brink , Elizabeth Erasmus
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.
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.
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 [Pd<sub>3</sub><sup>II</sup>(μ-OOC(CH<sub>2</sub>)<sub>n</sub>CH<sub>3</sub>)<sub>6</sub>] with three equivalents of [Co<sup>II</sup>(OOC(CH<sub>2</sub>)<sub>n</sub>CH<sub>3</sub>)<sub>2</sub>] where <em>n</em> = 4, 6, 8, or 10. This reaction resulted in the formation of [Pd<sup>II</sup>Co<sup>II</sup>(µ-OOC(CH<sub>2</sub>)<sub>n</sub>CH<sub>3</sub>)<sub>4</sub>] where <em>n</em> = 4, 6, 8, or 10. Characterisation via ATR-FTIR revealed that mixed-metal complexes exhibit multiple coordination modes, including unidentate, bidentate, tridendate, and bridging (<em>syn-syn</em>) binding modes. The single crystal X-ray structure of [Pd<sup>II</sup>Co<sup>II</sup>(μ-OOC(CH<sub>2</sub>)<sub>8</sub>CH<sub>3</sub>)<sub>4</sub>] (<em>Z</em> = 2, space group <em>P</em>2<sub>1</sub>/<em>c</em>) confirmed the binding modes observed in the ATR-FTIR studies.</div><div>Cyclic Voltammetry of [Pd<sub>3</sub><sup>II</sup>(μ-OOC(CH<sub>2</sub>)<sub>n</sub>CH<sub>3</sub>)<sub>6</sub>] and [Pd<sup>II</sup>Co<sup>II</sup>(µ-OOC(CH<sub>2</sub>)<sub>n</sub>CH<sub>3</sub>)<sub>4</sub>] where <em>n</em> = 4, 6, 8, or 10 demonstrated that the redox process for Pd<sup>0</sup> → Pd<sup>II</sup> were both chemically and electrochemically irreversible. Furthermore, [Pd<sup>II</sup>Co<sup>II</sup>(µ-OOC(CH<sub>2</sub>)<sub>n</sub>CH<sub>3</sub>)<sub>4</sub>] 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}
Pub Date : 2025-01-27DOI: 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 Fe<sub>3</sub>O<sub>4</sub> nanoparticles (Fe<sub>3</sub>O<sub>4</sub>-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 Fe<sub>3</sub>O<sub>4</sub>-starch/Ag NPs as a catalyst in the aldehyde-alkyne-amine (A<sup>3</sup>) 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 Fe<sub>3</sub>O<sub>4</sub>-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}
Pub Date : 2025-01-25DOI: 10.1016/j.jorganchem.2025.123530
Funda Doğan Karabekmez , Emine Özge Karaca , Nevin Gürbüz , Namık Özdemir , İsmail Özdemir
The N-substituted ligands (1a-d) were synthesized through the reaction of benzimidazole and a base with alkyl halides. After that, a new series of N-coordinated benzimidazole ruthenium(II) complexes (2a-d) was synthesized in this study. 1H and 13C NMR spectroscopy, elemental analysis and FT-IR spectroscopy methods were applied to examine the structures of the complexes. The structures of complexes 2a-c were additionally elucidated by X-ray diffraction spectroscopy. Arylmethyl alcohols have been alkylated with these complexes in the presence of KOtBu under solvent-free mild conditions at 120 °C. These complexes catalyzed the N-alkylation process, yielding secondary amines from primary amines with great selectivity. Without using solvents, these complexes are found to be effective catalysts for the alkylation of aromatic amines with various alcohols. Given the structural similarity of the ruthenium complexes, it is clear that there is no substantial difference in their catalytic activity; however, the selectivity of the reaction is dependent upon the characteristics of the amines and alcohols involved.
{"title":"Structural investigation and application of ruthenium(II)-benzimidazole complexes for N-alkylation","authors":"Funda Doğan Karabekmez , Emine Özge Karaca , Nevin Gürbüz , Namık Özdemir , İsmail Özdemir","doi":"10.1016/j.jorganchem.2025.123530","DOIUrl":"10.1016/j.jorganchem.2025.123530","url":null,"abstract":"<div><div>The <em>N</em>-substituted ligands (<strong>1a</strong>-<strong>d</strong>) were synthesized through the reaction of benzimidazole and a base with alkyl halides. After that, a new series of <em>N</em>-coordinated benzimidazole ruthenium(II) complexes (<strong>2a-d</strong>) was synthesized in this study. <sup>1</sup>H and <sup>13</sup>C NMR spectroscopy, elemental analysis and FT-IR spectroscopy methods were applied to examine the structures of the complexes. The structures of complexes <strong>2a</strong>-<strong>c</strong> were additionally elucidated by X-ray diffraction spectroscopy. Arylmethyl alcohols have been alkylated with these complexes in the presence of KO<em><sup>t</sup></em>Bu under solvent-free mild conditions at 120 °C. These complexes catalyzed the N-alkylation process, yielding secondary amines from primary amines with great selectivity. Without using solvents, these complexes are found to be effective catalysts for the alkylation of aromatic amines with various alcohols. Given the structural similarity of the ruthenium complexes, it is clear that there is no substantial difference in their catalytic activity; however, the selectivity of the reaction is dependent upon the characteristics of the amines and alcohols involved.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1028 ","pages":"Article 123530"},"PeriodicalIF":2.1,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143322263","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}
Pub Date : 2025-01-23DOI: 10.1016/j.jorganchem.2025.123539
Kimia Zarean Mousaabadi , Hassan Hadadzadeh
This review describes the study of organometallic complexes and their interaction with electricity. It explains the key developments and background of organometallic electrochemistry, highlighting its importance. The review then focuses on specific goals, exploring the redox properties and electroactivity of organometallic complexes, followed by a discussion of their electron transfer mechanisms. It also covers the electrochemical synthesis of these molecules, describing the processes involved. In addition, fundamental concepts like molecular electroactivation are discussed, along with their practical implications. This perspective provides junior researchers with an overview and proposes future research directions.
{"title":"Overview of organometallic electrochemistry","authors":"Kimia Zarean Mousaabadi , Hassan Hadadzadeh","doi":"10.1016/j.jorganchem.2025.123539","DOIUrl":"10.1016/j.jorganchem.2025.123539","url":null,"abstract":"<div><div>This review describes the study of organometallic complexes and their interaction with electricity. It explains the key developments and background of organometallic electrochemistry, highlighting its importance. The review then focuses on specific goals, exploring the redox properties and electroactivity of organometallic complexes, followed by a discussion of their electron transfer mechanisms. It also covers the electrochemical synthesis of these molecules, describing the processes involved. In addition, fundamental concepts like molecular electroactivation are discussed, along with their practical implications. This perspective provides junior researchers with an overview and proposes future research directions.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1028 ","pages":"Article 123539"},"PeriodicalIF":2.1,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357119","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}
The demand of environment benign and biologically active nanomaterials has spurred the development of green synthesis methodologies. The aim of present study was to develop a cost effective and ecofriendly synthesis methodology for Eucalyptus decorated silver nanoparticles (Eu-AgNPs) using a sustainable approach and affirmed by range of physicochemical techniques including fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), energy – dispersive x-ray (EDX) spectroscopy, transmission electron microscopy (TEM), thermogravemetric analysis (TGA), and powder x-ray diffraction (PXRD).The synthesized Eu-AgNPs were utilized as a potential catalyst in the synthesis of substituted chalcones. The robust features of the present approach exhibit remarkable catalytic performance, easy work up procedures, broad functional group tolerance, recyclability of the catalyst, better green chemistry metrices like low E factor (0.15), low PMI (1.15), high RME (86.53 %), high AE (94.0 %), high CE (92.0 %), high TON (47.84) and high TOF (191.36 h-1). Furthermore, to evaluate the antimicrobial activity of prepared Eu-AgNPs, experiments were conducted using nutrient agar medium (NAM) utilizing diffusion zone method. This study demonstrated the dual utility of Eu-AgNPs as a potential and sustainable catalyst for synthesis of high value chemicals and as effective antimicrobial agents, which contributes to the advancement of green chemistry and nanotechnology.
{"title":"Probing the fascinating role of Eu-AgNPs in the synthesis of bioactive substituted chalcones as a green matrix and study of their biological potential","authors":"Preeti Singh , Preeti Yadav , Shashi Bala , Jaishri Kaur","doi":"10.1016/j.jorganchem.2025.123528","DOIUrl":"10.1016/j.jorganchem.2025.123528","url":null,"abstract":"<div><div>The demand of environment benign and biologically active nanomaterials has spurred the development of green synthesis methodologies. The aim of present study was to develop a cost effective and ecofriendly synthesis methodology for Eucalyptus decorated silver nanoparticles (Eu-AgNPs) using a sustainable approach and affirmed by range of physicochemical techniques including fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), energy – dispersive x-ray (EDX) spectroscopy, transmission electron microscopy (TEM), thermogravemetric analysis (TGA), and powder x-ray diffraction (PXRD).The synthesized Eu-AgNPs were utilized as a potential catalyst in the synthesis of substituted chalcones. The robust features of the present approach exhibit remarkable catalytic performance, easy work up procedures, broad functional group tolerance, recyclability of the catalyst, better green chemistry metrices like low E factor (0.15), low PMI (1.15), high RME (86.53 %), high AE (94.0 %), high CE (92.0 %), high TON (47.84) and high TOF (191.36 h<sup>-1</sup>). Furthermore, to evaluate the antimicrobial activity of prepared Eu-AgNPs, experiments were conducted using nutrient agar medium (NAM) utilizing diffusion zone method. This study demonstrated the dual utility of Eu-AgNPs as a potential and sustainable catalyst for synthesis of high value chemicals and as effective antimicrobial agents, which contributes to the advancement of green chemistry and nanotechnology.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1028 ","pages":"Article 123528"},"PeriodicalIF":2.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143322265","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}
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