Jannatul F. Raka , Nahid Akter , Md. Mahbub Alam , Subas Rajbangshi , Vladimir N. Nesterov , Shariff E. Kabir , Shishir Ghosh
{"title":"Reactivity studies of saccharin at a diphosphine-stabilized low-valent triruthenium center to show a new, simple but elusive coordination mode of saccharinate ligand","authors":"Jannatul F. Raka , Nahid Akter , Md. Mahbub Alam , Subas Rajbangshi , Vladimir N. Nesterov , Shariff E. Kabir , Shishir Ghosh","doi":"10.1016/j.jorganchem.2025.123994","DOIUrl":"10.1016/j.jorganchem.2025.123994","url":null,"abstract":"<div><div>The reactivity of saccharin (sacH) towards the diphosphine-stabilized triruthenium [Ru<sub>3</sub>(CO)<sub>10</sub>(μ-dppm)] has been investigated. Thus, the reaction between [Ru<sub>3</sub>(CO)<sub>10</sub>(μ-dppm)] and sacH in refluxing benzene leads to the formation of [Ru<sub>3</sub>(CO)<sub>8</sub>(μ-dppm)(μ-H)(μ-sac)] (<strong>1</strong>) and [Ru<sub>2</sub>(CO)<sub>4</sub>(μ-dppm)(μ-sac)<sub>2</sub>] (<strong>2</strong>), with the triruthenium <strong>1</strong> being isolated as the major product. The sac ligand displays the typical edge-bridging coordination mode using nitrogen and the amide oxygen atoms in both <strong>1</strong> and <strong>2</strong>. Oxidative decarbonylation of <strong>1</strong> using Me<sub>3</sub>NO in the presence of PPh<sub>3</sub> affords simple phosphine-substituted product, [Ru<sub>3</sub>(CO)<sub>7</sub>(μ-dppm)(μ-H)(PPh<sub>3</sub>)(μ-sac)] (<strong>3</strong>), at room temperature which converts into [Ru<sub>3</sub>(CO)<sub>4</sub>(μ-H)(μ<sub>3</sub>-H)(η<sup>1</sup>-Ph)(μ-PPh<sub>2</sub>){μ-Ph<sub>2</sub>PCH<sub>2</sub>P(Ph)C<sub>6</sub>H<sub>4</sub>}(μ<sub>3</sub>-sac)] (<strong>4</strong>) upon thermolysis in refluxing toluene. The coordination mode of the sac ligand changes from edge-bridging to triply-bridging/face-capping during the conversion process. The triply-bridging coordination mode of the sac ligand observed in <strong>4</strong>, where it bridges a metal-metal edge using the nitrogen atom and coordinates with a third metal atom through the amide oxygen atom, is novel. Compound <strong>2</strong> also reacts with PR<sub>3</sub> (R = Ph, OMe) at room temperature to yield simple phosphine-substituted product, [Ru<sub>2</sub>(CO)<sub>3</sub>(μ-dppm)(PR<sub>3</sub>)(μ-sac)<sub>2</sub>] (<strong>5</strong>, R = Ph; <strong>6</strong>, R = OMe), however, “flipping” of one of the coordinated sac ligand is also observed during this substitution reaction. Several control experiments have been conducted to investigate the relationship between the products and to discuss the mechanisms involved in the formation of <strong>1</strong>-<strong>6</strong>. The molecular structures of <strong>1</strong>-<strong>4</strong> and <strong>6</strong> have been determined by X-ray crystallography.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123994"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882165","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":"An overview of palladium nanocatalysts anchored on carbon nanotubes for nitroarene reduction","authors":"Sara Payamifar, Ahmad Poursattar Marjani","doi":"10.1016/j.jorganchem.2025.123989","DOIUrl":"10.1016/j.jorganchem.2025.123989","url":null,"abstract":"<div><div>Nitroarenes and organic dyes are recalcitrant contaminants that typically occur in wastewater generated by industrial processes. They are poisonous to sea organisms; therefore, their expulsion from underwater systems is valuable. Systems according to palladium nanoparticles (Pd NPs) supported on carbon nanotubes (CNTs) are more efficient than traditional systems. This study comprehensively outlines recent advances in the synthesis, characterization, and catalytic applications of Pd NPs supported on CNTs for the selective reduction of nitroarenes. Emphasis is placed on the unique physicochemical properties of CNTs that enhance Pd dispersion, stability, and catalytic efficiency. The review highlights the catalytic performance of these nanocatalysts under mild and environmentally benign conditions, focusing on reaction mechanisms, substrate scope, and recyclability. Challenges such as catalyst deactivation and scale-up potential are addressed, along with prospects for future development in green catalytic processes leveraging CNT-supported Pd systems for sustainable organic transformations.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123989"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839144","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":"Competition between water and a bulky isocyanide in Pd(II) complexes with auxiliary 1,1′-bis(diphenylphosphino)ferrocene ligand","authors":"Ondřej Bárta, Ivana Císařová, Petr Štěpnička","doi":"10.1016/j.jorganchem.2025.123985","DOIUrl":"10.1016/j.jorganchem.2025.123985","url":null,"abstract":"<div><div>The reaction of the dimeric Pd(II)-dppf complex [Pd<sub>2</sub>(<em>μ</em>-Cl)<sub>2</sub>(dppf-κ<sup>2</sup><em>P,P</em>′)<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (<strong>1</strong>; dppf = 1,1′-bis(diphenylphosphino)ferrocene) with isocyanide XylNC (Xyl = 2,6-dimethylphenyl) proceeds under the cleavage of the chloride bridges to produce the isocyanide complex [PdCl(dppf-κ<sup>2</sup><em>P,P</em>′)(XylNC-κ<em>C</em>)][BF<sub>4</sub>] (<strong>3</strong>). The subsequent removal of the Pd-bound chloride with Ag[BF<sub>4</sub>] converts compound <strong>3</strong> into a mixture of the bis(isocyanide) complex [Pd(dppf-κ<sup>2</sup><em>P,P</em>′)(XylNC-κ<em>C</em>)<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (<strong>5</strong>) and the diaqua complex [Pd(dppf-κ<sup>2</sup><em>P,P</em>′)(H<sub>2</sub>O)<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (<strong>4</strong>). Both compounds can be selectively obtained from <strong>1</strong> under modified reaction conditions. Complex <strong>4</strong> readily condenses into a hydroxide-bridged dimer [Pd<sub>2</sub>(<em>μ</em>-OH)<sub>2</sub>(dppf-κ<sup>2</sup><em>P,P</em>′)<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (<strong>6</strong>) and can be converted to <strong>1</strong> and [PdCl<sub>2</sub>(dppf-κ<sup>2</sup><em>P,P</em>′)] (<strong>2</strong>) (via reactions with a Cl<sup>−</sup> source) or <strong>5</strong> (via reaction with XylNC). The facile dissociation of the XylNC ligand was explained by the antisymbiosis of the soft phosphine and isocyanide ligands.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123985"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882087","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}
Ghada Al-Assi , Ahmed M. Amshawee , Subbulakshmi Ganesan , Shaker Al-Hasnaawei , Radwan Ali , C.P. Surya , Renu Sharma , Aashna Sinha , Mosstafa Kazemi
{"title":"A decade of progress in direct C–H selenation: A modern strategy for C–Se bond formation","authors":"Ghada Al-Assi , Ahmed M. Amshawee , Subbulakshmi Ganesan , Shaker Al-Hasnaawei , Radwan Ali , C.P. Surya , Renu Sharma , Aashna Sinha , Mosstafa Kazemi","doi":"10.1016/j.jorganchem.2025.123987","DOIUrl":"10.1016/j.jorganchem.2025.123987","url":null,"abstract":"<div><div>Organoselenium compounds have attracted growing attention due to their diverse applications in medicinal chemistry, agrochemicals, catalysis, and materials science. As a result, the development of efficient and sustainable methodologies for constructing carbon–selenium (C–Se) bonds has become a vibrant area of research. Conventional strategies, including nucleophilic substitution, electrophilic selenation, and transition-metal–catalyzed cross-coupling, though powerful, typically require prefunctionalized substrates, multiple steps, and generate undesirable waste. In the last decade, direct C–H selenation has emerged as a modern and transformative approach that enables the direct conversion of inert C–H bonds into C–Se bonds without preactivation. This strategy embodies step and atom economy, provides access to structurally diverse selenium-containing frameworks, and offers unique opportunities for late-stage functionalization of bioactive molecules and complex scaffolds. Advances in transition-metal catalysis, photocatalysis, and electrochemical activation have expanded the scope of C–H selenation to arenes, heteroarenes, alkenes, and even alkanes under increasingly mild and sustainable conditions. This review highlights the significant progress achieved in the past decade, discussing catalytic systems, mechanistic insights, substrate scope, and prospects of C–H selenation as a cutting-edge methodology for C–Se bond construction.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123987"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839145","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}
Mohamed Abu Shuheil , Ahmed Aldulaimi , Rekha MM , Subhashree Ray , Omayma Salim Waleed , CP. Surya , Renu Sharma , Vatsal Jain
{"title":"Construction of MWCNTs/MNPs-based copper nanocomposite as an efficient and reusable catalyst for four-component preparation of highly substituted pyridines","authors":"Mohamed Abu Shuheil , Ahmed Aldulaimi , Rekha MM , Subhashree Ray , Omayma Salim Waleed , CP. Surya , Renu Sharma , Vatsal Jain","doi":"10.1016/j.jorganchem.2026.124011","DOIUrl":"10.1016/j.jorganchem.2026.124011","url":null,"abstract":"<div><div>A sustainable and highly efficient four-component protocol has been established for the synthesis of structurally diverse and highly substituted pyridine derivatives. The catalytic system, MWCNTs/MNPs–Tris(2-aminoethyl)amine–CuCl₂, effectively promotes the one-pot condensation of aromatic aldehydes, malononitrile, ethyl acetoacetate, and substituted anilines in aqueous medium under reflux conditions. This green catalytic method provides the desired pyridines in excellent yields (86–98%) within 1 h, highlighting its remarkable activity and selectivity. The reaction system exhibits wide substrate compatibility, tolerating both electron-donating and electron-withdrawing substituents on the aromatic rings. Product identity and purity were confirmed by melting-point determination and observation of crystalline or oily characteristics. A comparative evaluation with existing protocols demonstrates significant advantages in yield, environmental compatibility, and operational simplicity. The use of water as an environmentally benign solvent, along with the recyclable magnetic nanocatalyst, underscores the method's sustainability and reusability. Overall, this approach provides a green, rapid, and practical route to valuable pyridine-based heterocycles with potential biological relevance.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 124011"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922195","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}
Tahir A. Javadzade , Sevinc R. Hajiyeva , Famil M. Chyragov , Ana V.M. Nunes , Jamal Lasri , Sahil Z. Hamidov , Khudayar I. Hasanov , Kamran T. Mahmudov
{"title":"Cycloaddition of CO2 with epoxides into cyclic carbonates catalyzed by cobalt(II or II/III)-arylhydrazonates","authors":"Tahir A. Javadzade , Sevinc R. Hajiyeva , Famil M. Chyragov , Ana V.M. Nunes , Jamal Lasri , Sahil Z. Hamidov , Khudayar I. Hasanov , Kamran T. Mahmudov","doi":"10.1016/j.jorganchem.2025.123901","DOIUrl":"10.1016/j.jorganchem.2025.123901","url":null,"abstract":"<div><div>A series of known cobalt complexes, [Co(HL<sup>1</sup>)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>]·2H<sub>2</sub>O (<strong>1</strong>) (HL<sup>1</sup> = 4-(2-(2,4-dioxopentan-3-ylidene)hydrazineyl)benzoate), [Co(<em>μ</em>-HL<sup>2</sup>)(H<sub>2</sub>O)(DMF)]<sub>2</sub>·DMF (<strong>2</strong>) (HL<sup>2</sup> = (<em>Z</em>)-1-(2-carboxylatophenyl)-2-(1-cyano-2-imino-2-methoxyethylidene)hydrazin-1-ide), [Co<sup>II</sup>(H<sub>2</sub>O)<sub>2</sub>(DMF)<sub>2</sub>{Co<sup>III</sup>(HL<sup>3</sup>)<sub>2</sub>}<sub>2</sub>]·2H<sub>2</sub>O (<strong>3</strong>) (HL<sup>3</sup> = (<em>Z</em>)-1-(2-carboxylatophenyl)-2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazin-1-ide), [Co<sup>II</sup>(<em>μ</em>-HL<sup>3</sup>)(MeOH)<sub>2</sub>]<sub>n</sub> (<strong>4</strong>) and [Co<sup>II</sup>(H<sub>2</sub>O)<sub>4</sub>{Co<sup>III</sup>(HL<sup>4</sup>)<sub>2</sub>}<sub>2</sub>]·12H<sub>2</sub>O (<strong>5</strong>) (HL<sup>4</sup> = 1-(2-carboxylatophenyl)-2-(4,4-dimethyl-2,6-dioxocyclohexylidene)hydrazin-1-ide), were synthesized and applied as catalysts in the coupling of CO<sub>2</sub> with epoxides in the presence and absence of tetrabutylammonium chloride (TBACl), tetrabutylammonium bromide (TBABr), and tetrabutylammonium iodide (TBAI). Dependent on the nature of the starting epoxide, moderate to good yields (ranging from 31 to 74 %) of the cyclic carbonates were achieved in the reactions catalyzed by 3 under appropriate conditions (24 h, 60 °C and 40 bar pressure).</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123901"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882088","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":"Self-assembly of half-sandwich iridium-based metallarectangles for the encapsulation of polycyclic aromatic hydrocarbons","authors":"Si Nian , Zhi-Yang Chen , Shou-You Jiao , Ming-Xin Liang , Yu-Fei Zhu , Chengzhu He , Xianghuan Shan , Wei-Long Shan","doi":"10.1016/j.jorganchem.2025.123998","DOIUrl":"10.1016/j.jorganchem.2025.123998","url":null,"abstract":"<div><div>The rational design and synthesis of metallarectangles with tailored cavities and functionalities remain a formidable challenge in organometallic supramolecular chemistry. Here, we report two half-sandwich iridium-based metallarectangles, [Cp₂Ir₂Cl₂]₂L₂(OTf)₄ (1) and [Cp₂Ir₂(<em>μ</em>-DHBQ)]₂L₂(OTf)₄ (2), which were obtained in high yields via coordination-driven self-assembly of binuclear precursors B1 and B2 employing a 2,1,3-benzothiadiazole (BTD)-based bidentate ligand L. Based on single-crystal XRD analysis, the molecular structures of these complexes adopt tetranuclear rectangular macrocyclic architectures with cavities of distinct dimensions. Subsequent NMR titration studies confirmed that metallarectangle 2 exhibits exceptional host-guest properties, notably encapsulating electron-rich polycyclic aromatic hydrocarbons (PAHs) such as anthracene, phenanthrene, and pyrene. Additionally, the crystal structure of complex 2⊃pyrene provides molecular-level insight into the key interactions governing host-guest assembly and stability.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123998"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882164","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}
Narinderjit Singh Sawaran Singh , Rafid Kamal Jameel , Ahmed Aldulaimi , Malatesh Akkur , Satish Kumar Samal , Sridharan Sundharam , Sanjeev Kumar , Khalmurat Iliev , Zukhra Atamuratova , D. Yolchiev , Aseel Smerat , H. Amin El Sabban
{"title":"Biosynthesis of a recyclable MOF catalyst (UiO-66-NH2/Pd) mediated by Lavandula angustifolia extract: Investigation of its catalytic activity in Suzuki-Miyaura coupling reactions","authors":"Narinderjit Singh Sawaran Singh , Rafid Kamal Jameel , Ahmed Aldulaimi , Malatesh Akkur , Satish Kumar Samal , Sridharan Sundharam , Sanjeev Kumar , Khalmurat Iliev , Zukhra Atamuratova , D. Yolchiev , Aseel Smerat , H. Amin El Sabban","doi":"10.1016/j.jorganchem.2025.123991","DOIUrl":"10.1016/j.jorganchem.2025.123991","url":null,"abstract":"<div><div>This inclusive innovation research achieved the successful addition of palladium nanoparticles into the metal–organic framework material UiO-66-NH<sub>2</sub>, mediated by an aqueous extract of <em>Lavandula angustifolia</em> flower, as a natural reducing agent. Detailed analysis using various methods, such as TEM, FE-SEM, EDX, ICP-OES, and XRD confirmed the creation of the UiO-66-NH<sub>2</sub>/Pd NPs. The generated nanocomposite showed impressive catalytic effectiveness in the C<img>C construction by Suzuki-Miyaura reaction (SMC), producing high yields of biaryl products under gentle conditions. The catalyst was very stable and truly heterogeneous, as verified by hot filtration tests. Importantly, the catalyst could be recycled for 7 runs without notable decline in activity, showing its ability as an efficient and stable heterogeneous catalyst for C–C construction process.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1046 ","pages":"Article 123991"},"PeriodicalIF":2.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882121","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}
Suku Arya , Fathimathul Rinsana , Shajahan Rubina , Saithalavi Anas
{"title":"A facile and reusable heterogeneous catalyst for chan- lam coupling reaction","authors":"Suku Arya , Fathimathul Rinsana , Shajahan Rubina , Saithalavi Anas","doi":"10.1016/j.jorganchem.2025.123978","DOIUrl":"10.1016/j.jorganchem.2025.123978","url":null,"abstract":"<div><div>Chan-Lam coupling is an efficient transition metal catalyzed C<img>N bond formation strategy towards the synthesis of various N-arylated molecular structures. Despite remarkable advancement in the field, the construction of C<img>N remains challenging due to harsh reaction conditions and the use of expensive catalysts. Here, we have developed a facile and reusable polymer supported copper catalyst (<strong>mPAN<img>Cu</strong>) for Chan-Lam coupling reaction by incorporating copper (II) chloride into suitably functionalized polyacrylonitrile (PAN). After detailed characterization (FTIR, XRD, XPS, ICPMS and EDAX analyses), <strong>mPAN<img>Cu</strong> was successfully optimized as an efficient heterogeneous catalyst for Chan-Lam coupling reaction between <em>p-</em>anisidine (<strong>1a</strong>) and phenylboronic acid (<strong>2a</strong>) under milder reaction conditions. The generality of this reaction was further established by using a series of substituted anilines and aryl boronic acids in presence of Na<sub>2</sub>CO<sub>3</sub> in methanol under room temperature conditions. Moreover, this catalyst offers excellent recyclability by simple filtration and reused for successive reaction cycles without much appreciable loss in its stability and activity.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1045 ","pages":"Article 123978"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797750","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":"Well-defined palladium Nheterocyclic carbene complexes bearing CF3 moiety: Synthesis, characterization, crystal structure, direct C4-arylation of 3,5-dimethylisoxazole and antioxidant activity","authors":"Ayşegül Kalçık , Nazan Kaloğlu , Serhat Keser , Zarife Sibel Şahin , Serpil Demir Düşünceli","doi":"10.1016/j.jorganchem.2025.123975","DOIUrl":"10.1016/j.jorganchem.2025.123975","url":null,"abstract":"<div><div>A series of palladium <em>N</em>-heterocyclic carbene (NHC) complexes including <em>trans</em>-[Pd(NHC)Br<sub>2</sub>L] (<em>L</em> = C<sub>5</sub>H<sub>5</sub>N, 3-ClC<sub>5</sub>H<sub>4</sub>N, and <em>N</em>-methylimidazole) and [Pd(NHC)<sub>2</sub>Br<sub>2</sub>] have been prepared from {1-(benzyl)-3- (3,5-(bis(trifluoromethyl)benzyl)benzimidazolium bromide}. The structures of these new compounds were confirmed by NMR, FT-IR, and elemental analyses. The crystal structures of the dibromo- [1-(benzyl)-3- (3,5-(bis(trifluoromethyl)benzyl)benzimidazole-2-ylidene]-(pyridine)-palladium(II) and dibromo- [1-(benzyl)-3- (3,5-(bis(trifluoromethyl)benzyl)benzimidazole-2-ylidene]-(<em>N</em>-methylimidazole)-palladium(II) were determined by single-crystal X-ray diffraction. Palladium complexes were developed as efficient pre-catalysts for direct C4-arylation of 3,5-dimethylisoxazole and aryl bromides. Biological efficiency of <em>trans</em>-[Pd(NHC)Br<sub>2</sub>L]was evaluated by antioxidant activities like ABTS, OH and DPPH radical scavenging activity assays.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1045 ","pages":"Article 123975"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748494","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}