Journal of Organometallic Chemistry最新文献

{"title":"Exploring relevant features of the mechanism of enyne cycloisomerization reaction and related processes catalyzed by metal-carbenes and metal halides","authors":"Carmen-Irena Mitan ,&nbsp;Petru Filip ,&nbsp;Emerich Bartha ,&nbsp;Lionel Delaude ,&nbsp;Valerian Dragutan","doi":"10.1016/j.jorganchem.2025.123878","DOIUrl":"10.1016/j.jorganchem.2025.123878","url":null,"abstract":"<div><div>This review explores the mechanistic diversity of enyne cycloisomerization reactions that yield a wide range of carbo- and heterocyclic compounds. The reaction outcome whether cycloisomerization, ring-closing metathesis, or skeletal reorganization is largely determined by the nature and position of functional groups on the substrate and the type of catalyst employed, including metal-carbene systems (<em>e.g.</em> Ru), non-carbene complexes (<em>e.g.</em> Ru, Pt, Pd, In), and halides (<em>e.g.</em> GaCl₃, InCl₃, AuCl). Capitalizing on experimental results and DFT studies, the influence of catalyst-substrate interactions on pathway selectivity and stereochemical outcomes is further discussed. 6π Electrocyclization, (<em>n</em>) cyclization and sigmatropic rearrangement in presence of Ru complexes, β-hydride elimination and reductive elimination or [5 cycloaddition / reductive elimination in presence of Pd or Ru complexes are surveyed.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123878"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145464338","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":"Palladium nanoparticles supported over magnetic chitosan-tamarind gum composite as a reusable catalyst for CC coupling reactions","authors":"Waqid Al-Mussawi ,&nbsp;Narinderjit Singh Sawaran Singh ,&nbsp;Ammar Yasir Ahmed ,&nbsp;P.R. Jangir ,&nbsp;Alejandro Pérez-Larios ,&nbsp;Carlos Soto-Robles ,&nbsp;Osmin Áviles-García ,&nbsp;Mustafa Ahmed Diab ,&nbsp;H. Ahamd El Sabban ,&nbsp;Mutabar Latipova ,&nbsp;Ruslanbek Siddikov ,&nbsp;Abdulrahman A. Almehizia","doi":"10.1016/j.jorganchem.2025.123912","DOIUrl":"10.1016/j.jorganchem.2025.123912","url":null,"abstract":"<div><div>In this work, we detailed the fabrication and assessment of an innovative magnetic material that features Pd NPs decorated on functionalized Fe₃O₄ nanoparticles utilizing chitosan-tamarind gum (CHI-TG) combine polymers. The fabricated nanocatalyst (Fe₃O₄@CHI-TG/Pd NPs) was analyzed using various methods, including TEM, FESEM, EDS, mapping atudy, VSM, and ICP-OES spectroscopy. The catalytic efficacy of the Fe₃O₄@CHI-TG/Pd NPs was evaluated for the formation of C–C bonds via Stille coupling reactions. The related biaryl products were produced in good yields, and the Fe₃O₄@CHI-TG/Pd NPs catalyst was successfully recovered using a magnetic field and demonstrated sufficient stability for reuse over 6 consecutive cycles with a minimal decline in activity.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123912"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414782","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":"Graphene/graphitic-based metal-organic frameworks (MOFs) for photocatalytic degradation of pharmaceutical pollutants: A review","authors":"Stephen Sunday Emmanuel ,&nbsp;Abdullah K. Alanazi ,&nbsp;Ademidun Adeola Adesibikan ,&nbsp;Christopher Olusola Olawoyin ,&nbsp;Ebenezer Temiloluwa Abimbola ,&nbsp;Olumide James Oluwole","doi":"10.1016/j.jorganchem.2025.123915","DOIUrl":"10.1016/j.jorganchem.2025.123915","url":null,"abstract":"<div><div>Recently, efforts have been directed toward the use of improved functional nanomaterials like graphene/graphitic-based metal-organic frameworks (GBMOFs) with abundant active sites, better light absorption, enhanced surface functionalities, and recyclability to advance photocatalytic technology for the remediation of aquatic pollutants like pharmaceuticals. Thus, this study aims to review and explore original research works on the photocatalytic degradation of pharmaceutical pollutants in aqueous environments using GBMOFs. The scope of this study covers degradation performance, reusability, and stability dynamics, the effect of co-existing ions, degradation mechanism/pathways, and the potential of GBMOFs in industrial/real pharmaceutical effluent treatment. Notably, from the study, it was found that over 75 % degradation efficiency can be achieved by various GBMOFs in &lt;120 min and irradiation power of 5–500 W for most pharmaceutical pollutants. This excellent degradation performance was discovered to be largely facilitated by •O₂⁻and •OH through hydroxylation, deamination, decarboxylation, dealkylation, C<img>N/S-N bond cleavage, demethylation, and ring-opening processes due to abundant active oxygen-containing functional groups present in GBMOFs. It was also revealed that spent GBMOFs can be reused for about 3–10 cycles while still maintaining &gt;75 % degradation efficiency in most cases without serious structural damage. Findings from the effect of co-existing ions (where monovalent ions exhibit less effect compared to divalent ions) and real pharmaceutical effluent degradation studies established that GBMOFs hold great promise for pilot/industrial scale applications. Overall, this review contributes to the advancement of wastewater treatment, water security, material science, and Sustainable Development Goals 6 and 14.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123915"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414703","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":"Computational study on the copolymerization of α-olefins with polar monomer catalyzed by [N, P] Ti complexes: A DFT model for catalytic activity evaluation","authors":"Jiaojiao Zhang ,&nbsp;Wenwen Cong ,&nbsp;Yi Li","doi":"10.1016/j.jorganchem.2025.123904","DOIUrl":"10.1016/j.jorganchem.2025.123904","url":null,"abstract":"<div><div>A detailed theoretical mechanistic study on the α-olefins polymerization and copolymerization with polar monomers catalyzed by [N, P] Ti complexes is presented. This work primarily focuses on a computational investigation using density functional theory (DFT) to elucidate the relative free energies for various transition states and intermediates during the process of olefins copolymerization. The study examining key elementary steps, including chain initiation, chain propagation and chain termination (considering two potential pathways for the latter: <em>β</em>-hydride elimination and <em>β-</em>hydride transformation). The results indicate that the stability and steric bulk of the complexes can enhance the introduction of -F. For ethylene homo(co)polymerization, the introduction of one or more -F substituents on the backbone of the ligands tend to decrease the energy barriers. In contrast, variations in the substituents exert negligible effects on the activation barriers for ethylene/9-decen-1-ol copolymerization. A significant energy difference of approximately 8.8 kcal/mol was calculated between complexes bearing -CH₃ and -F substituents in the <em>β-</em>hydride elimination step. This relatively large energy span suggests a substantial influence on resulting polymer molecular weight. Collectively, these DFT calculations demonstrate the potential for predicting the activity of novel complexes within this family, thereby providing a valuable tool for designing new catalysts.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123904"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414701","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":"Structure, electronic, vibrational, and NLO properties of thiolato-bridged diruthenium cations: A computational study","authors":"Abdelatif Messaoudi","doi":"10.1016/j.jorganchem.2025.123911","DOIUrl":"10.1016/j.jorganchem.2025.123911","url":null,"abstract":"<div><div>This study presents a computational investigation of five monocationic dinuclear Ruthenium compounds with three bridges, which are either thiolate or hydride anions, according to the formulas The [(η⁶-arene)Ru(μ-H)_n({μ-(p-X-C₆H₄)-S}_mRu(η⁶-arene)]⁺ (with either n=1/m=2 or n=2/m=1). Depending on the nature of the terminal and symmetric hexahapto arene ligands (1,2,4,5-Me₄C₆H₂ or C₆Me₆) and the nature of terminal thiolate substituent (X = Br, Me, C₄H₃S), the five compounds are nicknamed as A1-A5, the first dimer in the series being the unique doubly H bridged species. The DFT and time-dependent TD-DFT methods were used to explore and compare structural, electronic, and optical properties. The geometry optimizations were performed at various levels of theory, all showing satisfactory agreements with the experimental crystallographic structures, especially concerning the skeletal Ru-Ru and Ru-S bond distances. Reactivity descriptors derived from the nature of the frontier MOs revealed that the doubly H-bridged complex A1 is the most electrophilic and reactive species, while A4 and A2 are the most electronically stable. Partial charge analysis confirmed the nucleophilic character of hydride ligands and the dual donor–acceptor behavior of sulfur atoms. UV-Vis spectra simulations highlighted metal-to-ligand charge transfer (MLCT) as the dominant excitation mode across all the complexes. At the same time, the Br-substituents at the thiolate bridges in A3 seem to confer additional ligand–ligand charge transfer (LLCT) character. Complex A5 emerged as the most promising system, showing the highest oscillator strengths and intense π→π* transitions. Nonlinear optical (NLO) analysis revealed exceptional first hyperpolarizability (β_tot) for A5, with values up to 5763.38 × 10-³³ esu over 25,000 times higher than that of urea. These findings position A5 as a strong candidate for optoelectronic and second-order NLO applications. Overall, this work provides valuable insights into the structure–property relationships of diruthenium complexes and underscores the importance of functional and basis set selection in modeling transition metal systems.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123911"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414700","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 chitosan-tragacanth gum polymeric composite for the creation of gold nanoparticles as an efficient catalyst for CC coupling in water","authors":"Narinderjit Singh Sawaran Singh ,&nbsp;Waqid Al-Mussawi ,&nbsp;P.D. Jangir ,&nbsp;Muktha Eti ,&nbsp;Tanmoy Prida ,&nbsp;S. Radhika ,&nbsp;Gaganjot Kaur ,&nbsp;Erkaboy Davletov ,&nbsp;Usmonjon Akhmedov ,&nbsp;Alisher Abduvokhidov ,&nbsp;M.A. Diab ,&nbsp;Heba A. El-Sabban","doi":"10.1016/j.jorganchem.2025.123928","DOIUrl":"10.1016/j.jorganchem.2025.123928","url":null,"abstract":"<div><div>A composite material made from chitosan and tragacanth gum (CS-TG) was made and applied to help create gold nanoparticles in water by reducing and stabilizing them. A variety of modern tests, such as Ultraviolet-visible (UV–Vis), Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FE-SEM), Energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), and Inductively coupled plasma optical emission spectroscopy (ICP-OES), confirmed that the CS-TG/Au NPs were successfully fabricated. The images from TEM showed that the Au NPs were round, evenly distributed, and approximately 40–60 nanometers in size. After analyzing the CS-TG/Au NPs, it was effectively used as a catalyst in the C<img>C coupling connection through the Suzuki-Miyaura coupling (SMC), producing high amounts of biaryls under gentle conditions in water. The catalyst showed great stability and true heterogeneity, which was verified by experiments involving hot filtration. Importantly, the catalyst could be reused for 7 times in a row with only a slight decrease in effectiveness, showing that it could be a strong and eco-friendly choice for constructing C<img>C bonds.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123928"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145464341","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":"Preparation and characterization of Cu (II)-porphyrin supported on Fe3O4-SiO2 (CuIIMTNCPP-SiO2-Fe3O4) in one-pot and pseudo-four-component synthesis of benzimidazole derivatives","authors":"Ameer H. Alwash ,&nbsp;Mustafa H. Ghazi ,&nbsp;Mahmoud S. Muter ,&nbsp;Qais R. Lahhob","doi":"10.1016/j.jorganchem.2025.123914","DOIUrl":"10.1016/j.jorganchem.2025.123914","url":null,"abstract":"<div><div>This study presents the development of a novel, sustainable nanocatalyst, Cu (II)-porphyrin supported on a Fe₃O₄-SiO₂ nanostructure, designed for the efficient synthesis of benzimidazole derivatives. The catalyst was meticulously synthesized via sequential approaches, involving ligand preparation, metalation of ligand, surface functionalization of Fe₃O₄, and covalent immobilization, ensuring high purity, stability, and reusability. Comprehensive characterization techniques, including FE-SEM, FT-IR, XRD, VSM, XPS and AAS, confirmed the structural integrity, magnetic properties, and active metal loading of the nanocomposite. The catalytic activity was evaluated through the synthesis of benzimidazoles using a variety of benzaldehyde derivatives, benzo-1,2-quinone, and ammonium acetate under mild, alcoholic aqueous medium at room temperature. Results demonstrated excellent yields (up to 96%) within short reaction times (20–60 min), with the catalyst exhibiting high turnover numbers (up to 480) and turnover frequencies (up to 1154 h⁻¹). Importantly, the catalyst demonstrated remarkable recyclability, maintaining over 85% yield after five cycles. This methodology offers a cost-effective, environmentally friendly alternative to traditional protocols, with broad substrate scope and potential for large-scale application in pharmaceutically relevant heterocycle synthesis.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123914"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145463805","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":"Design and immobilized gold nanoparticles into the chitosan-xanthan gum polymers as a novel catalyst for efficient nitroarenes reduction in water","authors":"Narinderjit Singh Sawaran Singh ,&nbsp;Ibrahim Saeed Gataa ,&nbsp;Luma Hussain Saleh ,&nbsp;M M Rekha ,&nbsp;Subhashree Ray ,&nbsp;Kattela Chennakesavulu ,&nbsp;Renu Sharma ,&nbsp;Wissam Aziz Yousif ,&nbsp;Akmal Abilkasimov ,&nbsp;Mutabar Latipova ,&nbsp;M.A. Diab ,&nbsp;Heba A. El-Sabban","doi":"10.1016/j.jorganchem.2025.123902","DOIUrl":"10.1016/j.jorganchem.2025.123902","url":null,"abstract":"<div><div>This research presents an innovative method for designing and creating a polymeric composite platform derived from chitosan-xanthan gum polysaccharides (CS-XG) to encapsulate gold nanoparticles, leading to the development of a novel CS-XG/Au NPs nanocomposite. The CS-XG composite was formed through hydrogen bonding and further providing a natural framework that acts as a capping, reducing, and stabilizing agent for the formation of gold nanoparticles. The successful creation of the CS-XG/Au NPs was confirmed using a range of advanced analytical methodologies, including UV-Vis, FE-SEM, TEM, EDX, elemental mapping, XRD and ICP-OES. TEM images indicated that the gold nanoparticles were spherical in shape, monodispersed, and had an approximate size of 40-50 nm. Following the characterization of CS-XG/Au NPs, its catalytic activity were successfully utilized in the reduction of various nitroarenes in an aqueous medium. Notably, the catalyst can be simply recovered and reused for at least 8 successive cycles with minimal loss of catalytic performance, highlighting its promise for sustainable and practical uses in green chemistry.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1043 ","pages":"Article 123902"},"PeriodicalIF":2.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414781","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":"Ruthenium(II)-catalyzed base-free transfer hydrogenation in air using N-alkyl substituted 1-methylimidazole-2-carboxamido ligands: Insight into the role of [(p-Cymene)RuCl]2(µ-Cl)(µ-H)","authors":"Raihana Noory ,&nbsp;Melissa I. Myslinski ,&nbsp;Joshua S. Santibanez ,&nbsp;Chip Nataro ,&nbsp;Eric W. Reinheimer ,&nbsp;Steven E. Kalman","doi":"10.1016/j.jorganchem.2025.123865","DOIUrl":"10.1016/j.jorganchem.2025.123865","url":null,"abstract":"<div><div>Four new half-sandwich ruthenium(II) complexes featuring <em>N</em>-alkyl substituted 1-methylimidazole-2-carboxamido ligands were synthesized, characterized, and evaluated as pre-catalysts for the base-free transfer hydrogenation of acetophenone in isopropanol at 85 °C in air with 1 mol% catalyst loading. Based on the alkyl substitution at the carboxamido nitrogen, the catalytic activity follows the order <em>tert</em>‑butyl &gt; isopropyl &gt; methyl &gt; benzyl, in which yields of 1-phenylethanol up to 86 % after one hour and 92 % after three hours were observed. NMR analysis revealed the formation of [(<em>p</em>-cymene)RuCl]₂(µ-Cl)(µ-H) during catalytic reactions. This hydride dimer was found to be an effective catalyst for transfer hydrogenation, although experiments suggest that it is unlikely to be the sole catalyst in the reactions described herein.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1042 ","pages":"Article 123865"},"PeriodicalIF":2.1,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157085","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":"Cationization of fac-[Mn(CO)3(Rbpy)Br] complexes with ammonia: direct access to water-soluble photoinduced CO releasing molecules","authors":"Marcel Annereau ,&nbsp;Anne Le Mire ,&nbsp;Geoffrey Gontard ,&nbsp;Michèle Salmain ,&nbsp;Vincent Corcé","doi":"10.1016/j.jorganchem.2025.123888","DOIUrl":"10.1016/j.jorganchem.2025.123888","url":null,"abstract":"<div><div>A new family of water-soluble photoinduced CO-releasing molecules (PhotoCORMs) having the general structure <em>fac</em>-[Mn(CO)₃(^Rbpy)(NH₃)]Br (bpy= 2,2′-bipyridine; <em>R</em>= -H, -Me, -tBu, -OMe, -NO₂, -CF₃, -CONH₂) has been synthesized in good yield by reaction between the corresponding [Mn(CO)₃(^Rbpy)Br] complexes and methanolic ammonia. Photolysis experiments and myoglobin assay were performed on all the complexes and unambiguously demonstrated that they rapidly release from one to three CO molecules upon blue light irradiation.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1042 ","pages":"Article 123888"},"PeriodicalIF":2.1,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326284","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}