Journal of Organometallic Chemistry最新文献

{"title":"Bimetallic nickel-cobalt Ziegler Natta catalyst for hydrogenation of styrene-isoprene copolymer","authors":"Fanwei Lin ,&nbsp;Guangjun Cui ,&nbsp;Tingting Ge ,&nbsp;Hui Guo ,&nbsp;Yanxia Zheng ,&nbsp;Yuchao Li ,&nbsp;Haofei Huang ,&nbsp;Wenwen Zhang ,&nbsp;Liran Ding ,&nbsp;Xinpeng Guo ,&nbsp;Cuncun Zuo","doi":"10.1016/j.jorganchem.2025.123640","DOIUrl":"10.1016/j.jorganchem.2025.123640","url":null,"abstract":"<div><div>A series of homogeneous Ziegler-Natta catalysts centered on Ni and Co were prepared and applied for catalytic hydrogenation of Styrene-isoprene block copolymers (SI) with different block ratios to synthesize hydrogenated styrene-isoprene block copolymer (SEP). The dispersion of metal nanoparticles in Ni-Co bimetallic Ziegler catalyst was investigated by TEM, which indicated that when n(Ni): n(Co)=1:1, the dispersion of catalyst nanoparticles was better. Changes in hydrogenation activity and molecular structure of Styrene-isoprene block copolymers (SI) with different block ratios were systematically investigated by nuclear magnetic resonance (¹H NMR) and Fourier transform infrared (FT-IR) characterization. Physicochemical properties of Styrene-isoprene block copolymers (SI) and hydrogenated styrene-isoprene block copolymer (SEP) were analyzed by thermogravimetric analysis (TGA), gel permeation chromatography (GPC), swept-surface differential scanning calorimetry (DSC), mechanical tests and UV anti-aging tests. Several new hydrogenated styrene-isoprene (SEP) materials with excellent performance were developed. The relationship between the dispersion of bimetallic active center and hydrogenation activity was investigated, and the hydrogenation mechanism was elaborated. Response surface analysis (RSM) experimental design was made. The effects of hydrogenation pressure, reaction temperature and batch reactor time on the catalytic hydrogenation process were investigated, and the results were consistent with those of RSM. The kinetics of gas-liquid two-phase hydrogenation was also investigated, and the activation energy Ea of the reaction was determined to be 9.394 KJ/mol. The continuous tubular hydrogenation styrene-isoprene block copolymers were explored.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1033 ","pages":"Article 123640"},"PeriodicalIF":2.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761124","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":"Felicitous cationic dye adsorption from aqueous solution using Sn- based catalysts: An incorporated experimental and theoretical research","authors":"Mayada Ramadan,&nbsp;Shaimaa M. Ibrahim,&nbsp;Shimaa Abdel Halim,&nbsp;Raghda Kamal","doi":"10.1016/j.jorganchem.2025.123638","DOIUrl":"10.1016/j.jorganchem.2025.123638","url":null,"abstract":"<div><div>Toxic synthetic dyes, which possess complex aromatic structures, have been gotten out into wastewater from various arms. The adsorption technique has become an appealing approach for the elimination of dye pollutants from water in order to solve this problem. Little adsorption studies were done on the adsorbents of Sn-based catalysts in spite of their easy preparation; affordability and stable characteristics have made them some of the most sought-after adsorbent materials for study at this time. This work presents unparalleled comprehensive experimental research together with theoretical simulations at the DFT-B3LYP/6–31 G (d,P) level of theory for the carcinogenic cationic dye adsorption upon new modified binary Sn-based nanocomposites. The synthesis of SnO₂@SiO₂ nanocomposite with different types of surfactants system via surfactant-assisted ultrasonic sol gel method has hardly been discussed in the literature, which motivates us to synthesize this nanocomposite in this approach. According to both the experimental and theoretical results, the insertion of silica and different surfactant types resulted in significant improvement in their S_BET values, crystal size, zeta potential, uniformly pore size distribution, total pore volume, dipole moment, electronegativity, electrophilicity, energy gap, total energy, and the adsorption energy. The obtained adsorbent characteristics proposed that the synthesized surfactant-assisted-modified composites can be hard done as excellent adsorbents for the carcinogenic cationic dyes present in the industrial wastewater. It is detected to adsorb ∼100 % of methylene blue (MB) from aqueous solution within just 5 min. at room temperature and normal pH. The impact of variables such as the adsorbent dose, contact time, temperature, pH, and the initial dye concentration was examined. The kinetic and isotherm models determined that the pseudo-second order and Langmuir isotherm models, respectively, suit the data well. An integrated experimental and theoretical study for the MB dye adsorption reaction mechanism onto the SnO₂@SiO₂ nanocomposite was discussed in detail. Comparison evaluation with other adsorbents in literature was done.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1033 ","pages":"Article 123638"},"PeriodicalIF":2.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739178","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":"Natural pozzolan as a novel heterogeneous catalyst for the synthesis of alkylaminophenols","authors":"Mourad Boukachabia ,&nbsp;Hacene Bendjeffal ,&nbsp;Tayeb Bouaroudj ,&nbsp;Abdelkarim Djebli ,&nbsp;Olivier Riant","doi":"10.1016/j.jorganchem.2025.123635","DOIUrl":"10.1016/j.jorganchem.2025.123635","url":null,"abstract":"<div><div>The development of sustainable catalysts from natural materials, such as pozzolan, represents a promising strategy in green chemistry. The pozzolan studied was subjected to multi-technique characterization (XRD, FTIR, BET, and SEM) to establish its structural and textural properties. The results obtained highlight the effectiveness of this material as a catalyst for the Petasis reaction, allowing the synthesis of a diversity of alkylaminophenols with yields reaching 93%. The reaction was successfully carried out on a gram scale, confirming the potential of pozzolan as a heterogeneous catalyst. This catalyst, which is recyclable and inexpensive, represents an attractive alternative for large-scale applications while respecting the environment.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1033 ","pages":"Article 123635"},"PeriodicalIF":2.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706333","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":"Combined In Vitro and In Silico analysis of ferrocenylmethylaniline derivatives: Antibacterial potential, DFT calculations, and molecular dynamics insights","authors":"Yahia Bekkar ,&nbsp;Elhafnaoui Lanez ,&nbsp;Touhami Lanez ,&nbsp;Lotfi Bourougaa ,&nbsp;Aicha Adaika ,&nbsp;Aida Benine ,&nbsp;Zahra Saada","doi":"10.1016/j.jorganchem.2025.123618","DOIUrl":"10.1016/j.jorganchem.2025.123618","url":null,"abstract":"<div><div>The rise of antimicrobial resistance poses a major public health threat by reducing the efficacy of treatments against infections in humans, animals, and plants. This study evaluates the antibacterial potential of three ferrocenylmethylaniline derivatives: Ferrocenylmethylaniline (FMA), N-Ferrocenylmethyl-N-acetylaniline (FMAA), and N-Ferrocenylmethyl-N-benzoylaniline (FMBA) against four clinically relevant bacterial strains (<em>Escherichia coli</em> (<em>E. coli</em>), <em>Pseudomonas aeruginosa</em> (<em>P. aeruginosa</em>), <em>Klebsiella pneumoniae</em> (<em>K. pneumoniae</em>), and <em>Staphylococcus aureus</em> (<em>S. aureus</em>)). In vitro assays revealed FMBA as the most potent compound, with IC50 values of 26.18 mg/mL (<em>E. coli</em>), 34.33 mg/mL (P. aeruginosa), and 42.08 mg/mL (S. aureus), comparable to amoxicillin (AXL).</div><div>Molecular docking against twelve bacterial drug targets showed FMBA exhibited superior binding affinities, particularly with peptide deformylase, anthranilate-CoA ligase, peptidoglycan D,D-transpeptidase, dehydrosqualene synthase, and penicillin-binding protein 2a . DFT analysis, including thermodynamic parameters and non-covalent interactions (Reduced Density Gradient, Electron Localization Function, Localized Orbital Locator), provided deeper insights into electronic structures, stability, and binding interactions. Molecular dynamics simulations confirmed the stability of FMBA-protein complexes, reinforcing its potential as a promising antimicrobial lead compound. These findings suggest FMBA as a strong candidate for the development of novel antibacterial agents targeting drug-resistant pathogens.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123618"},"PeriodicalIF":2.1,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697600","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":"Advances in Wacker oxidation: From palladium to first-row transition metal catalysts","authors":"Jisna Jose ,&nbsp;Diana Elizabeth Jose ,&nbsp;Thomas V. Mathew","doi":"10.1016/j.jorganchem.2025.123625","DOIUrl":"10.1016/j.jorganchem.2025.123625","url":null,"abstract":"<div><div>The widespread presence of carbonyl scaffolds in agrochemical and pharmaceutical compound libraries has led to an increased focus on creating sustainable and effective processes for transforming olefins into their carbonyl derivatives. The first breakthrough was made possible by the Wacker method, which transformed alkenes into aldehydes or ketones by utilizing the mutually exclusive interactions of palladium and copper. Replacing palladium with a readily available and affordable metal has the potential to revolutionize the Wacker-type oxidation (WTOx), making it a more environmentally friendly and economically feasible method for olefin oxidation. This review explores the recent advances in WTOx, emphasizing the mechanistic insights and innovations in catalytic systems that enable the selective oxidation of olefins. It emphasizes the shift from noble metals to first-row transition metal catalysts for more sustainable synthetic applications. Advancements in palladium-catalyzed Wacker systems have led to significant improvements in yields, regioselectivity, and functional group tolerance. These improvements have been achieved through the use of novel ligands, oxidants, and reaction conditions.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123625"},"PeriodicalIF":2.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697601","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, characterization, X-ray structures, and catalytic activity of new Mn(I) and Re(I) metal complexes of chelating phosphinopyridylamine and its sulfide ligands","authors":"Harbi Tomah Al-Masri ,&nbsp;Akram Ali Almejled ,&nbsp;Ziad Moussa","doi":"10.1016/j.jorganchem.2025.123620","DOIUrl":"10.1016/j.jorganchem.2025.123620","url":null,"abstract":"<div><div>The reaction of 4-Me-C₅H₃N-2-NH(PPh₂) (<strong>1</strong>) with Mn(CO)₅Br in refluxing chloroform produced the <em>fac</em>-[Mn(CO)₃Br{<strong>1</strong>-κ²<em>P,N</em>}] (<strong>2</strong>) and [Mn(CO)₂{<strong>1</strong>-κ²<em>P,N</em>}₂]Br (<strong>3</strong>) complexes. Furthermore, the refluxing of the monooxidized thioyl (4-CH₃)C₆H₃N-2-NH(P(S)Ph₂) (<strong>4</strong>) ligand with M(CO)₅Br (<em>M</em> = Mn, <em>Re</em>) in chloroform yielded the <em>fac</em>-[M(CO)₃Br{<strong>4</strong>-κ²<em>S,N^py</em>}] (<em>M</em> = Mn (<strong>5</strong>), <em>Re</em>(<strong>6</strong>)) complexes. The investigation of complexes <strong>2, 3, 5</strong>, and <strong>6</strong> was carried out with the use of multinuclear NMR (¹H, ¹³C and ³¹P NMR), infrared spectroscopy, and the determination of crystal structures. Complexes <strong>5</strong> and <strong>6</strong> represent the inaugural structurally characterized instances of this category of chalcogenide ligands associated with Mn and <em>Re</em> metals documented thus far. Complexes <strong>5</strong> and <strong>6</strong> demonstrate significant catalytic efficacy in the hydrogenation of acetophenone derivatives to yield 1-phenylethanol derivatives, utilizing 2-propanol as a hydrogen source.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123620"},"PeriodicalIF":2.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696056","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":"The first organometallic complex bearing a diacylthiourea ligand","authors":"Matthew C. Risi ,&nbsp;Graham C. Saunders","doi":"10.1016/j.jorganchem.2025.123636","DOIUrl":"10.1016/j.jorganchem.2025.123636","url":null,"abstract":"<div><div>Here we report the first example of an organometallic complex bearing a diacylthiourea ligand. The title complex, [(η⁶-p-cymene)Ru{(CH₃CH₂CONH)₂CS}Cl₂], was prepared form the diacylthiourea ligand (CH₃CH₂CONH)₂CS and the ruthenium cymene dimer [(η⁶-<em>p</em>-cymene)RuCl₂]₂. The X-ray crystallographic structure of the complex revealed the diacylthiourea molecule to coordinate as a neutral monodentate ligand through the core thiourea sulfur atom. The spatial arrangement of the piano stool complex is governed by a series of hydrogen bonding and chalcogen non-covalent interactions which were subsequently confirmed using the non-covalent interactions index.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123636"},"PeriodicalIF":2.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682530","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}

{"title":"Solvothermal Synthesis of Innovative and Efficient Ag/NA-MOF Nanoparticles for One-Pot Synthesis of Imidazoquinazolinones and In vitro Validation as Anti-Alzheimer Agents","authors":"Gehad E. Said ,&nbsp;Mahmoud Tarek ,&nbsp;Abdulrahman A. Almehizia ,&nbsp;Ahmed M. Naglah ,&nbsp;Hazem A. Ghabbour ,&nbsp;Tamer K. Khatab","doi":"10.1016/j.jorganchem.2025.123623","DOIUrl":"10.1016/j.jorganchem.2025.123623","url":null,"abstract":"<div><div>Nicotinic acid was presented as MOF-mediated in the hydrothermal synthesis of silver MOF nanoparticles followed by the crystallography study of its structure by IR, SEM, TEM, and XRD. The catalytic properties of the prepared Ag/NA-MOF were achieved in the synthesis of some new tetrahydrobenzo[4,5]imidazo[2,1-<em>b</em>]quinazolin-1(2<em>H</em>)-one derivatives through one pot mixing of dimedone, 2-aminobenzimidazole and aromatic aldehyde in the presence of catalytic amount of Ag/NA-MOF under solvent-free conditions. The synthesized tetracyclic imidazoquinazoline derivatives were binding ligands with acetylcholine esterase (AChE inhibitors). The <em>in vitro</em> validation approved the theoretical data through colorimetric determination of acetylcholinesterase activity. The data obtained explained that the compounds <strong>4c, 4f, 4i</strong> and <strong>4j</strong> give promising values and the most potent one is <strong>4i</strong> by IC₅₀ value of <strong>5.93 ± 0.02 μg/mL</strong> compared to the standard donepezil value of <strong>5.18 ± 0.02 μg/mL</strong> as a reference Alzheimer's drug.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123623"},"PeriodicalIF":2.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696055","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":"Manganese Phenoxyimine complexes: Structures, reactions, and water-assisted hydrosilylation of aldehydes","authors":"Kouki Matsubara,&nbsp;Kaichi Ikuta,&nbsp;Shoko Koga,&nbsp;Yuji Koga","doi":"10.1016/j.jorganchem.2025.123634","DOIUrl":"10.1016/j.jorganchem.2025.123634","url":null,"abstract":"<div><div>A series of Mn(I) and Mn(II) complexes was synthesized from a three-coordinate phenoxyimine ligand with hemilabile pendant groups and readily available manganese salts. Under pyrolytic conditions, Mn(I) carbonyl complexes decomposed in the presence of 2e-donor ligands into Mn(II) and other complexes via disproportionation reactions. Mn(II) complexes exhibited catalytic activity in hydrosilylation of aldehydes and acetophenone. Hydrosilylation proceeded with phenylsilane and water accelerated the catalytic reaction in a system similar to that previously reported for Co(II) analog.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123634"},"PeriodicalIF":2.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705216","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":"Synergistic effects and comprehensive analysis of photodegradability inhibition of PVC plastics film by novel Schiff base metal complex additives: Performance and Dechlorination mechanism","authors":"Eslam A. Mohamed ,&nbsp;Amal A. Altalhi ,&nbsp;Hend M. Ahmed ,&nbsp;Nabel A. Negm","doi":"10.1016/j.jorganchem.2025.123626","DOIUrl":"10.1016/j.jorganchem.2025.123626","url":null,"abstract":"<div><div>Three photo-stabilizers were prepared and designed from a complexation reaction of (2E)-2-(4-((E)-(2-hydroxyphenylimino)methyl)benzylideneamino)phenol Schiff base and three metal ions: Fe(III), Cu(II), and Ni(II). Their chemical structures were elucidated using elemental analysis, FTIR, ^1HNMR, and UV/Vis spectroscopy. The photo-stabilizers were formulated at 0.5 % in PVC sheets and tested under ultraviolet light for 0–250 h. The degradation indexes including unsaturation (I_C_<img>_C), carbonyl (I_C_<img>_O), and hydroxyl (I_OH) indexes of pure PVC were 0.12, 0.2, and 0.23. While, the index values were decreased moderately in the case of Cu-stabilizer to 0.025, 0.112, and 0.122, respectively. In the case of the Ni-stabilizer, the degradation indexes considerably reduced to 0.062, 0.078, and 0.110 respectively. The average molecular weight of PVC after 200 h of photo-irradiation was decreased by 80 % in the case of pure PVC, while in the case of stabilized PVC by the prepared photo-stabilizers were 69 %, 56 %, and 39 % for PVC-Fe, PVC<img>Cu, and PVC<img>Ni, respectively. The photo-stabilizing tendencies of the prepared photo-stabilizers were ascribed based on their ability for radical scavenging and were associated with their antioxidant efficiencies. The antioxidant efficiencies of the synthesized photo-stabilizers were measured and compared to 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS⁺) as standards. Copper and nickel complexes exhibited higher efficiency than ferric complexes during the photo-stabilization of PVC under the studied conditions. The role of the synthesized photo-stabilizers in the photo-stabilization mechanism was explained.</div></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":"1032 ","pages":"Article 123626"},"PeriodicalIF":2.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682478","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}