Journal of Organometallic Chemistry最新文献

{"title":"One-pot preparation of ZnO-SnO₂@rGO nanocomposite using Bougainvillea glabra flower extract and evaluation of its photocatalytic removal of Coomassie Brilliant Blue","authors":"G.K. Ayyadurai ,&nbsp;M.K. Raman ,&nbsp;K. Selvaraju ,&nbsp;Gunasekaran Somasundaram ,&nbsp;Paulson Emerson","doi":"10.1016/j.jorganchem.2026.124015","DOIUrl":"10.1016/j.jorganchem.2026.124015","url":null,"abstract":"<div><div>Discharging untreated and unmonitored dye waste poses a significant threat to the influential and thriving textile dyeing sectors of several countries. The rigid chemical bonding of that dye hinders its degradation, making photocatalytic processes a superior method for degrading industrial dyes. In the present work, zinc oxide (ZnO) and tin oxide (SnO₂) on reduced graphene oxide (rGO) nanosheets were prepared to produce a ZnO-SnO₂@rGO nanocomposite as a nano-photocatalyst via a simple, eco-friendly, one-pot green synthesis approach employing <em>Bougainvillaea glabra</em> flower extract (BGFE) as a green reducing agent. The synthesized ZnO-SnO₂@rGO nanocomposite was characterized through various analytical techniques, including XRD, FT-IR, UV‒Vis, SEM, and XPS. XRD analysis confirmed the formation of hexagonal wurtzite ZnO and tetragonal-phased SnO₂ nano-crystallites on rGO with a crystallite size of 2.19 nm. The optical bandgap was calculated and found to be in the photon energy range of 2.6 eV for the ZnO-SnO₂@rGO nanocomposite. Morphological analysis confirmed the formation of rod-shaped ZnO nanoparticles and spherical SnO₂ clusters anchored well onto the layered rGO sheets. The ability of the ZnO-SnO₂@rGO nanocomposite to degrade Coomassie Brilliant Blue R 250 (CBB R 250) dye under sunlight irradiation was examined. The ZnO-SnO₂@rGO nanocomposite effectively degraded 98.8% and 96.7% of the different dye dosages of CBB R 250 dye within 60 and 100 min under solar irradiation, respectively. The ZnO-SnO₂@rGO catalyst demonstrated reliable performance during seven consecutive cycles of reusability, and XRD examination further validated its structural stability.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1047 ","pages":"Article 124015"},"PeriodicalIF":2.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generation of the intramolecular hydrogen bonding of a parallel β-sheet nucleated by a rigid bimetallic ring","authors":"Timothy P. Curran ,&nbsp;Alessandro Marrone ,&nbsp;Iogann Tolbatov ,&nbsp;Lilly L. Pubillones ,&nbsp;Thanh T. Nguyen ,&nbsp;Joanne Stewart","doi":"10.1016/j.jorganchem.2026.124014","DOIUrl":"10.1016/j.jorganchem.2026.124014","url":null,"abstract":"<div><div>Two glycine residues were appended to two alkyne ligands in a rigid, bimetallic ring that features both a 1,1′-ferrocene and a tungsten bis-alkyne to yield complex <strong>4a-b</strong>. The conformation of <strong>4a-b</strong> was probed using NMR and computational methods. The results show that the bimetallic ring system holds the two glycine residues in a conformation similar to that found in a parallel β-sheet, and that this conformation is made robust by formation of four intramolecular hydrogen bonds. In contrast, a diester derivative, <strong>13a-b</strong>, adopts a conformation where only one of the two NH protons are involved in an intramolecular hydrogen bond. The findings suggest that in <strong>4a-b</strong> the bimetallic ring system adopts a nascent β-sheet conformation.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1047 ","pages":"Article 124014"},"PeriodicalIF":2.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New dicarbonyl and first monocarbonyl Re and 99mTc complexes with quinaldic acid and cyclohexyl isocyanide","authors":"Antonio Shegani ,&nbsp;Myrto Ischyropoulou ,&nbsp;Nektarios Pirmettis ,&nbsp;Catherine Raptopoulou ,&nbsp;Vassilis Psycharis ,&nbsp;Maria Pelecanou ,&nbsp;Ioannis Pirmettis ,&nbsp;Minas Papadopoulos ,&nbsp;Charalampos Triantis","doi":"10.1016/j.jorganchem.2025.123986","DOIUrl":"10.1016/j.jorganchem.2025.123986","url":null,"abstract":"<div><div>Complexes of rhenium and technetium-99 m that accommodate both bidentate and monodentate ligands provide versatile chemical platforms with potential in radiopharmaceutical design. By combining quinaldic acid (quinH) with cyclohexyl isocyanide (cisc), we explored the reactivity of the <em>fac</em>-[M(CO)₃]⁺ synthon (<em>M</em> = <em>Re</em>, ^99mTc) beyond the classical [2 + 1] system. This approach led to the isolation of three distinct species: the expected tricarbonyl <em>trans</em>-[M(CO)₃(quin)(cisc)], the dicarbonyl <em>trans</em>-<em>cis</em>-[M(CO)₂(quin)(cisc)₂], and, notably, the monocarbonyl <em>mer</em>-[M(CO)(quin)(cisc)₃], reported here for the first time. The rhenium analogues were fully characterized by elemental analysis, IR, NMR, and single-crystal X-ray diffraction, while the technetium congeners were prepared under analogous conditions and identified by comparative HPLC. All technetium complexes displayed excellent <em>in vitro</em> stability in the presence of histidine and cysteine (&gt;95 % RCP at 6 h). Lipophilicity values (logD_7.₄ = 2.8–4.0) indicated that these compounds are highly hydrophobic. Biodistribution studies in mice confirmed that hepatobiliary clearance is the dominant excretion route, with negligible uptake in the stomach and spleen. Among them, the monocarbonyl complex exhibited remarkably rapid clearance, with &gt;65 % of the injected dose recovered in the intestines at 2 h post-injection. These findings expand the chemistry of isocyanide-containing ^99mTc/<em>Re</em> carbonyl complexes and provide new opportunities for constructing multifunctional radiopharmaceutical scaffolds where the pharmacophore can be attached either to the bidentate or to the isocyanide ligands.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123986"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145808392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient synthesis of substituted 1,4-Dihydropyridines using NiFe-LDH: A green catalytic approach","authors":"Soumaya Talbi ,&nbsp;Zhor Ou-ichen ,&nbsp;Zineb Tchorbo ,&nbsp;Marieme Kacem ,&nbsp;Mustapha Dib ,&nbsp;Abdelghani Boussetta ,&nbsp;Salha Hamri ,&nbsp;Souad Rabi ,&nbsp;Abderrafia Hafid ,&nbsp;Mostafa Khouili","doi":"10.1016/j.jorganchem.2025.123995","DOIUrl":"10.1016/j.jorganchem.2025.123995","url":null,"abstract":"<div><div>In this work, we describe an eco-friendly approach for the synthesis of 1,4-dihydropyridine (1,4-DHP) derivatives via the reaction of substituted aromatic aldehydes with ethyl acetoacetate and ammonium acetate by using NiFe-LDH solid catalyst. Furthermore, NiFe-LDH catalyst was prepared successfully through a co-precipitation process carried out at pH 10.0 ± 0.2, with a Ni²⁺/Fe³⁺ molar ratio of 3. The synthesized material was extensively analyzed using numerous techniques such as XRD, IR, N₂-Adsorption-Desorption and SEM-EDS. The reaction was performed in ethanol as a green solvent, with NiFe-LDH serving as a recyclable heterogeneous catalyst. As result, this methodology provides several benefits, such as mild operating conditions, environmentally sustainable synthesis, high yields reaching 92%, and straightforward catalyst recovery.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123995"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of (1,2-dicarba‑closo-dodecaboran-1-yl)-methyl ketone","authors":"Anna A. Druzina ,&nbsp;Olga B. Zhidkova ,&nbsp;Sergey A. Anufriev ,&nbsp;Ivan V. Ananyev ,&nbsp;Igor B. Sivaev ,&nbsp;Vladimir I. Bregadze","doi":"10.1016/j.jorganchem.2025.123990","DOIUrl":"10.1016/j.jorganchem.2025.123990","url":null,"abstract":"<div><div>The preparation of 1-(<em>ortho</em>-carboran-1′-yl)ethanol by the reaction of <em>ortho</em>-carborane and acetaldehyde in the presence of various bases, such as (Bu₄N)<em>F</em> × 3H₂O, Proton Sponge, DBU or Barton’s base, was studied. The highest yield of 1-(<em>ortho</em>-carboran-1′-yl)ethanol (60 %) was observed when using Barton’s base. The treatment of 1-(<em>ortho</em>-carboran-1′-yl)-ethanol with CrO₃ in acetic acid at room temperature leads to (1,2-dicarba‑<em>closo</em>-dodecaboran-1-yl)-methyl ketone in nearly quantitative yield. The reaction of 1-phenyl-1,2-dicarba‑<em>closo</em>-dodecaborane with acetaldehyde in the presence of (Bu₄N)F in THF resulted in the tetrabutylammonium salt of 7-phenyl-7,8-dicarba‑<em>nido</em>-undecaborate, which structure was determined by single-crystal X-ray diffraction study.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123990"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organometallic complexes for bioimaging and related applications","authors":"Peng Tao,&nbsp;Wai-Yeung Wong","doi":"10.1016/j.jorganchem.2025.123993","DOIUrl":"10.1016/j.jorganchem.2025.123993","url":null,"abstract":"","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123993"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polydopamine modified TiO2 micro particles immobilized palladium nanoparticles as recyclable nanocatalyst for Suzuki-Miyaura coupling reactions","authors":"Narinderjit Singh Sawaran Singh ,&nbsp;Attalla F. El-kott ,&nbsp;Kareem Morsy ,&nbsp;Sally Negm ,&nbsp;Mohammed A. AlShehri ,&nbsp;Salama A. Salama ,&nbsp;Abdullah Ali Alamri ,&nbsp;Amani Alhejely ,&nbsp;Heba S. Khalifa ,&nbsp;Murodjon Yaxshimuratov ,&nbsp;Mukhayya Ruzieva ,&nbsp;Bikash Karmakar","doi":"10.1016/j.jorganchem.2025.123988","DOIUrl":"10.1016/j.jorganchem.2025.123988","url":null,"abstract":"<div><div>This work reports the creation of a new nanocomposite by immobilizing palladium nanoparticles (Pd NPs) on the surface of polydopamine (PDA)-modified TiO₂ microparticles (TiO₂/PDA-Pd NPs) without using toxic chemicals. Several methods were used to analyze the chemical and physical properties of the produced TiO₂/PDA-Pd nanocomposite including FT-IR, FE-SEM, EDX, TEM, XPS, and ICP-AES analysis. After being studied for its catalytic use, this TiO₂/PDA-Pd NPs nanocomposite produced biphenyl compounds with good to exceptional efficiency following Suzuki coupling. Additionally, after seven reaction cycles, the nanocatalyst maintained its high activity, demonstrating its remarkable catalytic performance and potential for usage as a sustainable and recyclable catalyst.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123988"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A green and recyclable salen-cobalt catalyst immobilized on MCM-48 for Pd- and Cu-free sonogashira coupling reaction in aqueous media","authors":"Rusul Alabada ,&nbsp;Rima Heider Al Omari ,&nbsp;Magda H. Abdellattif ,&nbsp;G PadmaPriya ,&nbsp;Subhashree Ray ,&nbsp;Kattela Chennakesavulu ,&nbsp;Renu Sharma ,&nbsp;Ashish Singh Chauhan","doi":"10.1016/j.jorganchem.2025.123996","DOIUrl":"10.1016/j.jorganchem.2025.123996","url":null,"abstract":"<div><div>A novel Pd-Cu free heterogeneous catalyst was developed by covalently immobilizing a salen cobalt complex onto the surface of mesoporous silica MCM-48. The mesoporous support provided a high surface area and regular pore arrangement, promoting efficient dispersion and accessibility of active sites. The resulting catalyst was characterized using different techniques including FT-IR, XRD, BET, TEM, SEM, TGA, and ICP-OES to confirm its structural integrity, surface properties, and successful functionalization. The catalyst displayed outstanding performance in the Sonogashira cross-coupling reaction under eco-friendly conditions employing water as a sustainable solvent and in the absence of palladium or copper co-catalysts. A wide range of aryl halides and terminal alkynes were efficiently coupled to obtain the desired products with good to excellent yields. Moreover, the heterogeneous nature of the catalyst allowed for easy recovery and reuse over five cycles with minimal decline in activity or leaching of cobalt. This study presents an effective and sustainable approach to developing non-noble metal catalysts for cross-coupling reactions, highlighting the potential of immobilized Co-salen complexes as versatile and green catalysts in organic transformations.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123996"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance comparison of magnetically recoverable Fe3O4-chitosan nanocatalysts in the sustainable synthesis of heterocyclic compounds","authors":"Hamideh Sarreshtehdar Aslaheh,&nbsp;Sara Payamifar,&nbsp;Ahmad Poursattar Marjani,&nbsp;Mahdi Poursattar Marjani","doi":"10.1016/j.jorganchem.2025.123992","DOIUrl":"10.1016/j.jorganchem.2025.123992","url":null,"abstract":"<div><div>This review article provides a concise overview of the application of Fe₃O₄@chitosan-based magnetic metal nanocatalysts for the environmentally friendly production of heterocycles containing nitrogen atoms from 2020 to 2025. The main focus of the review is on the metal systems based on Cu, Ni, and Fe, which not only efficiently promote the creation of pharmaceutical-relevant tetrazoles, quinazolinones, oxazolidinones, and the like <em>N</em>‑heterocycles but also do so under gentle, eco-friendly conditions like aqueous or alcoholic media, minimal catalyst loadings, and easy magnetic separation. The review also mentions the main features of such metal systems, including high yields, short reaction times, and excellent recyclability. It compares the metal-containing support with respect to the amount of metal, the type of ligand environment, and the number of times it can be reused. It also discusses the work of organometallics and the mechanisms involved; it states that the metal centers, together with transient metal–carbon interactions, help activate the substrate and facilitate C–N and C–C bond formation on the heterogeneous surface. At last, the paper presents the current problems and forecasts future developments, particularly for the creation of Fe₃O₄@chitosan nanocatalysts and similar heterogeneous systems of a new generation for the environmentally friendly synthesis of drugs containing heterocycles.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123992"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Testing cuprophilicity with tetrahedral ruthenium hydride carbonyl clusters","authors":"Cristiana Cesari ,&nbsp;Marco Bortoluzzi ,&nbsp;Cristina Femoni ,&nbsp;Francesca Forti ,&nbsp;Maria Carmela Iapalucci ,&nbsp;Giorgia Scorzoni ,&nbsp;Stefano Zacchini","doi":"10.1016/j.jorganchem.2025.123999","DOIUrl":"10.1016/j.jorganchem.2025.123999","url":null,"abstract":"<div><div>The reaction of [NEt₄]₃ [HRu₄(CO)₁₂] (<strong>1</strong>) with three mole equivalents of [Cu(MeCN)₄][BF₄] and three mole equivalents of [NEt₄]Br affords a nearly 1:1 mixture of [NEt₄]₃ [HRu₄(CO)₁₂(CuBr)₃] (<strong>2</strong>) and [NEt₄]₂ [H₂Ru₈(CO)₂₄Cu₇Br₃] (<strong>3</strong>). These two products can be separated owing to their different solubilities in organic solvents. [NEt₄]₃ [HRu₈(CO)₂₄Cu₆Br₂] (<strong>4</strong>) has been obtained reacting <strong>1</strong>, [Cu(MeCN)₄][BF₄] and [NEt₄]Br with stoichiometry 1:1:3. In the absence of [NEt₄]Br, <strong>1</strong> reacts with 3.5 mole equivalents of [Cu(MeCN)₄][BF₄] affording [Ru₅(CO)₁₅(CuMeCN)₂] (<strong>5</strong>). The new clusters <strong>2</strong>–<strong>5</strong> have been fully characterized by FT-IR and ¹H NMR spectroscopy, and their molecular structures elucidated by single-crystal X-ray diffraction (SC-XRD). Homometallic Ru-Ru and Cu-Cu as well as heterometallic Ru-Cu interactions have been computationally investigated by DFT methods.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123999"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882163","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}