Applied Organometallic Chemistry最新文献

{"title":"Synergistic Steric and Electronic Ligand Engineering Unlocks High-Performance Schiff Base for Lactide Ring-Opening Polymerization","authors":"Yishan Jiang,&nbsp;Yixin Shi,&nbsp;Yili Shen,&nbsp;Zifan Fei,&nbsp;Rongze Zuo,&nbsp;Guiwei Rao,&nbsp;Jun Xia,&nbsp;Yuqing Chen","doi":"10.1002/aoc.70654","DOIUrl":"https://doi.org/10.1002/aoc.70654","url":null,"abstract":"<div>\u0000 \u0000 <p>Advancing the catalytic precision for the ring-opening polymerization (ROP) of lactide is essential for the scalable and sustainable production of polylactic acid (PLA). Here, we report a ligand engineering strategy for Schiff base salen catalysts, where the synergistic combination of a π-extended naphthalene spacer and an electron-deficient benzoic acid moiety is harnessed to tailor the metal center's activity and selectivity. A library of ligands and their Cu (II), Mn (II), and Ni (II) complexes was synthesized and structurally authenticated. Screening identified the Cu (II) complex bearing the naphthalene-benzoic acid hybrid ligand (HNA-DABA@Cu) as a standout performer, delivering PLA in 49.4% isolated yield with &gt; 94% monomer conversion under optimized conditions (150°C, 12 h, catalyst/monomer = 1:2000) and affording polymer with molecular weight (Mw) of ~180 kDa. Comprehensive characterization (XRD, FT-IR, SEM, EA and HR-ESI-MS) reveals that the synergistic ligand framework promotes the formation of a well-defined Cu (II) active site embedded in a highly crystalline molecular assembly, as evidenced by the sharp XRD reflections and the needle-like single-domain morphology. This work establishes that the concerted steric and electronic modulation offered by judiciously paired functional groups is a potent design principle for developing high-performance catalysts in controlled polymerization.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyridyl Thiosemicarbazone Complexes of Ni (II), Cu (II), and Zn (II): Structural Insights and Neuropharmacological Activity","authors":"Nishant Shekhar,&nbsp;Rajesh Kumar,&nbsp;Riya Kumari,&nbsp;Ram Nayan Gautam,&nbsp;Diptee Mitra,&nbsp;Ramesh Chandra,&nbsp;Arti Srivastava,&nbsp;M. K. Bharty","doi":"10.1002/aoc.70650","DOIUrl":"https://doi.org/10.1002/aoc.70650","url":null,"abstract":"<div>\u0000 \u0000 <p>Thiosemicarbazone-based metal complexes have attracted considerable attention due to their rich coordination chemistry and emerging biological relevance; however, systematic correlations between their structural features and neuropharmacological activities remain limited. In this work, three metal complexes, [Ni(HcpmTsc)₂] (<b>1</b>), [Cu(HcpmTsc)(Cl)] (<b>2</b>), and [Zn(HcpmTsc)₂] (<b>3</b>), derived from <i>N</i>-(2-chlorophenyl)-2-(pyridyl methylene) thiosemicarbazone (<b>H</b>_<b>2</b><b>cpmTsc</b>), were synthesized and comprehensively characterized using spectral techniques. In addition, complexes <b>1</b> and <b>3</b> were characterized by single-crystal X-ray diffraction, whereas the crystal structure of complex <b>2</b> had been reported earlier; however, its sedative and anxiolytic activities have been evaluated for the first time in the present study. Structural analyses revealed distorted octahedral geometries for complexes <b>1</b> and <b>3,</b> with the ligand acting as a uninegative tridentate donor in all cases. The crystal structures reveal extended supramolecular assemblies stabilized by intermolecular C-H···N and C-H···S interactions. Photoluminescence studies demonstrated that the ligand and all complexes exhibit fluorescent behavior. To address the paucity of neuropharmacological investigations on such systems, the synthesized compounds were evaluated for sedative and anxiolytic activities using established animal models. The results indicated notable sedative and anxiolytic effects mediated predominantly through GABA_A receptor pathways, with [Ni(HcpmTsc)₂] (<b>1</b>) showing the highest activity. Molecular docking studies supported these findings by confirming favorable receptor interactions. Overall, this study highlights the therapeutic potential of these complexes as candidates for neuropharmacological development.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isomorphous Heterometallic Mn/Zn/Co-CPs as Robust Photoelectrocatalysts for Water Oxidation: Structural and Performance Insights","authors":"Bo Liu,&nbsp;Jia-Xin Fan,&nbsp;Yu-Chen Xie,&nbsp;Xi-Ya Chen,&nbsp;Hai-Tao Xu,&nbsp;Er-Nu Liu,&nbsp;Jiu-Fu Lu","doi":"10.1002/aoc.70653","DOIUrl":"https://doi.org/10.1002/aoc.70653","url":null,"abstract":"<div>\u0000 \u0000 <p>The cooperative effects between different metal centers play a crucial role in photoelectrocatalytic applications. Therefore, the design and synthesis of heterometallic coordination polymers (CPs) have become a significant research direction. Herein, we report the solvothermal synthesis and characterization of three novel isomorphous heterometallic CPs, namely {[M¹M²(H₂O)₆(DODDA)]·4H₂O}_n (<b>SNUT-42-MnZn</b>, M¹M² = MnZn; <b>SNUT-42-CoZn</b>, M¹M² = CoZn; <b>SNUT-42-CoMn</b>, M¹M² = CoMn), based on the tetracarboxylic ligand <b>H</b>_<b>4</b><b>(DODDA)</b> (1-(3,5-dicarboxyphenyl)-4-oxo-1,4-dihydropyridazine-3,5-dicarboxylic acid). Single-crystal X-ray diffraction analysis indicates that all three compounds adopt identical crystal structures, characterized by a distinctive one-dimensional ladder-type double-chain framework. The photoelectrocatalytic performance varied significantly among the three compounds, as evidenced by their oxygen evolution reaction (OER) activities—<b>SNUT-42-CoMn</b> exhibiting the lowest overpotential (η = 107 mV at 10 mA cm⁻²) and the smallest Tafel slope (135.41 mV dec⁻¹) within the series, suggesting favorable reaction kinetics among the prepared catalysts. Mott-Schottky analysis confirms n-type semiconductor behavior with bandgap energies of 2.34 eV, 2.35 eV, and 2.41 eV correlating with photocurrent densities of 1.26, 1.42, and 1.71 mA cm⁻² achieved at 1.23 V vs. RHE, respectively. Thermal gravimetric analysis highlights stability up to 300°C, with dehydration mass losses matching theoretical values. The synergistic interplay between redox-active metal pairs enhances carrier separation, as evidenced by PL quenching and EIS data, positioning these materials as robust candidates for solar-driven water oxidation.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal-Complex Extension of an Allylated Hydrazide/Thiosemicarbazide S4/S3 Ligand Pair: Donor-Set Control of Spectral, Thermal, Antimicrobial, and MCF-7 Screening Profiles","authors":"Sherin A. M. Ali,&nbsp;Heba S. Taher,&nbsp;Ahmed Z. Ibrahim,&nbsp;Mostafa A. A. Mahmoud","doi":"10.1002/aoc.70651","DOIUrl":"https://doi.org/10.1002/aoc.70651","url":null,"abstract":"<div>\u0000 \u0000 <p>Using a previously reported allylated hydrazide/thiosemicarbazide S4/S3 ligand platform, S4 (2-(allyloxy)benzohydrazide) and S3 (2-(2-(allyloxy)benzoyl)-<i>N</i>-ethylhydrazine-1-carbothioamide) were prepared and extended to a first-row metal-complex series with Co (II), Ni (II), Cu (II), Mn (II), and Zn (II). The novelty lies in the metal-complex extension and donor-set-dependent comparison of this known scaffold, not in rediscovery of the standalone ligands. The study compares the compact hydrazide O,N-donor S4 platform with the sulfur-containing thiosemicarbazide O,N,S-donor S3 platform to examine complex formation, spectroscopic response, thermal behavior, disk-diffusion antimicrobial screening, and MCF-7 MTT activity. The ligands and isolated products were examined by elemental/metal analysis, FT-IR, UV–Vis, ligand-level ¹H NMR, magnetic susceptibility, TGA/DTG, antimicrobial disk diffusion, and MTT screening; selected 48-h dose–response curves for S4-Ni, S4-Mn, and S4-Co are provided in the Supporting Information as auxiliary IC₅₀ evidence. Convergent CHNS/metal elemental analysis, FT-IR, UV–Vis, magnetic, and thermal observations support formation of metal–organic coordination solids, with O,N coordination proposed for S4-derived complexes and O,N,S involvement proposed for S3-derived complexes. Calculated/found CHNS/metal data support the selected empirical formulations, while the geometries are treated as proposed working coordination modes pending crystallographic confirmation. S4-derived complexes showed the stronger antimicrobial profile, especially Co-S4 against <i>Staphylococcus aureus</i> (16.85 ± 0.26 mm) and Ni-S4 against <i>Candida albicans</i> (17.75 ± 1.10 mm). In the MCF-7 single-dose screen at 10 μg mL⁻¹, Zn-S3 (87.79%), Ni-S4 (80.16%), Co-S3 (73.85%), and Ni-S3 (73.50%) were the leading derivatives. Overall, sulfur incorporation did not act as a universal activity enhancer; instead, it redirected endpoint-dependent metal behavior across the antimicrobial and MCF-7 screens.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Nitro-Substituted Ruthenium Complex as a Luminescent Probe for G-Quadruplex DNA","authors":"Jin-Xin Zhang,&nbsp;Yu-De Zhu,&nbsp;Liang Ma,&nbsp;Xue-Wen Liu,&nbsp;Xia Hu,&nbsp;Yuan-Dao Chen,&nbsp;Song-Bai Zhang","doi":"10.1002/aoc.70652","DOIUrl":"https://doi.org/10.1002/aoc.70652","url":null,"abstract":"<div>\u0000 \u0000 <p>The design and application of G-quadruplex DNA (G4-DNA) probes can enhance our understanding of their biological functions and contribute to the development of diagnostic or therapeutic drugs. Ruthenium complexes have attracted significant research interest as G-DNA luminescent probs. However, most of ruthenium-based G4 probes possess simple aromatic planar structures, which often results in poor recognition selectivity for G-quadruplexes. To overcome this problem, here, we report a nitro-substituted ruthenium complex (<b>RC1</b>) that can serve as a G-quadruplex DNA luminescent probe. The DNA docking and DNA binding experimental results have demonstrated that <b>RC1</b> exhibited stronger binding affinity towards G4-DNA than other DNA structures since G4-DNA binding of <b>RC1</b> enhanced the planarity and rigidity. <b>RC1</b> displayed high luminescence response (7.10-fold enhancement) to G4-DNA (HTDNA) due to the effect of nitro group on the emission properties of ruthenium complex and enhanced the planarity and rigidity of the ligand. The G4-DNA selectivity (5.6-fold luminescence enhancement over ds-DNA) may be attributed to the steric hindrance effect by the introduction of phenyl group. Therefore, the design of the nitro-substituted Ru (II) complexes paves the way for an effective approach to Ru (II)-based G-quadruplex luminescent probes.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyether Functionalized Isonitrile Enhanced Nickel-Catalyzed Hydrosilylation of Olefins","authors":"Weihong Huang,&nbsp;Zhijun Yuan,&nbsp;Ying Bai,&nbsp;Jiayun Li,&nbsp;Jiajian Peng,&nbsp;Guoqiao Lai","doi":"10.1002/aoc.70648","DOIUrl":"https://doi.org/10.1002/aoc.70648","url":null,"abstract":"<div>\u0000 \u0000 <p>The hydrosilylation reaction is the core conversion process for synthesizing organosilicon compounds and/or polymers, and the choice of catalyst is crucial for reaction efficiency and selectivity. Isonitrile as a ligand, cannot only stabilize the low valence metal center, but also directly participate in the process of bond formation and cleavage. This study reported that a series of polyether functionalized isonitrile was prepared. The effectiveness of polyether functionalized isonitrile as ligand for nickel pivalate catalyzed hydrosilylation of olefins had been investigated.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Targeting Highly Branched Polyethylene Waxes by Unsymmetrical Bis(arylimino)acenaphthene-Nickel Precatalysts Bearing Rigid N-Phenyl and N-Naphthalen-1-yl Groups","authors":"Qiuyue Zhang,&nbsp;Zishuo Li,&nbsp;Shuo Zhang,&nbsp;Jiahao Gao,&nbsp;Yizhou Wang,&nbsp;Yanping Ma,&nbsp;Tongling Liang,&nbsp;Wen-Hua Sun","doi":"10.1002/aoc.70641","DOIUrl":"https://doi.org/10.1002/aoc.70641","url":null,"abstract":"<div>\u0000 \u0000 <p>To develop high-performance unsymmetrical bis(arylimino)acenaphthene-nickel precatalysts, N-phenyl and N-naphthalen-1-yl groups were strategically selected as one-side rigid N-aryl arm without auxiliary alkyl substituents, enabling the diverse construction of ligands (<b>L2</b>-<b>L4</b> and <b>L5</b>-<b>L8</b>) and their corresponding nickel complexes (<b>Ni2</b>-<b>Ni4</b> and <b>Ni5</b>-<b>Ni8</b>). Upon treatment with either EASC or MMAO, all nickel complexes demonstrated moderate to high activities in polymerizing ethylene, achieving up to 16.1 × 10⁶ g of PE (mol of Ni)⁻¹ h⁻¹, and noticeably generated branched polyethylene waxes with narrow and lower molecular weights from 1.8 kg mol⁻¹ to 24.5 kg mol⁻¹. Notably, these nickel-based catalytic systems exhibited enhanced thermostability, with an optimum operational temperature of 60°C, outperforming their previously reported nickel analogs. Critically, the strategic modification of another N-aryl groups enabled precise tuning of catalytic performance. Specifically, varying the positional isomerism of the di(4-fluorophenyl)methyl group not only modulated the catalytic activities of the nickel complexes but also dictated the microstructural features—including molecular weight and branching degree—of the synthesized polyethylene waxes. A systematic analysis of the structure-performance correlations has been conducted to elucidate how the strategic incorporation of sterically demanding, multi-substituted N-aryl fragments—in tandem with rigid N-phenyl or N-naphthalen-1-yl substituents—modulates catalytic performance.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RuCo@Expanded Perlite Nanocatalyst for Sustainable Hydrogen Generation via Methanolysis of Ammonia Borane","authors":"Mehmet Sait İzgi,&nbsp;Ömer Şahin,&nbsp;Erhan Onat","doi":"10.1002/aoc.70647","DOIUrl":"https://doi.org/10.1002/aoc.70647","url":null,"abstract":"<div>\u0000 \u0000 <p>RuCo nanoclusters supported on expanded perlite (EP) were synthesized and evaluated as efficient catalysts for hydrogen generation via the methanolysis of ammonia borane (AB). EP, an inexpensive and environmentally benign support, was modified to enhance its surface properties and subsequently employed for metal loading. The resulting RuCo@EP catalyst exhibited good activity, achieving a hydrogen generation rate (HGR) of 5487 mL g⁻¹ min⁻¹ and a turnover frequency (TOF) of 94.5 h⁻¹ at 30°C. Comprehensive kinetic studies revealed that the reaction follows first-order kinetics with respect to AB concentration, with an apparent activation energy of 47.07 kJ mol⁻¹. Structural and morphological analyses (XRD, SEM–EDS, TEM, and BET) supported the successful incorporation and relatively uniform distribution of Ru and Co nanoparticles on the perlite surface. These findings demonstrate that RuCo@EP is a cost-effective and highly active catalyst, highlighting the potential of natural mineral supports for sustainable hydrogen generation.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green Synthesis of Novel Diorganotin Heterocycles From PET Waste Under Ultrasound Irradiation for Reversible Turn-off Fluorescence Sensing of Cu2+ Ions in Water","authors":"Iván E. Díaz-Payán,&nbsp;Israel López-Hernández,&nbsp;María G. Sánchez-Anguiano,&nbsp;Rosa M. Jiménez-Barrera,&nbsp;Emanuel Bojórquez-Quintal,&nbsp;Abner Esperanza-Norzagaray,&nbsp;Rodrigo Chan-Navarro,&nbsp;María C. García-López,&nbsp;Roberto Rodríguez-Ortíz","doi":"10.1002/aoc.70644","DOIUrl":"https://doi.org/10.1002/aoc.70644","url":null,"abstract":"<div>\u0000 \u0000 <p>Herein, we report two novel diorganotin compounds derived from poly (ethylene terephthalate) waste that exhibit reversible turn-off fluorescence sensing properties. The compounds were synthesized in good yields through an ultrasound-assisted one-pot reaction completed within 30 min. Both organotin compounds were comprehensively characterized using NMR (¹H, ¹³C, and ¹¹⁹Sn) spectroscopy, vibrational analysis, molecular absorption, fluorescence emission, and high-resolution mass spectrometry. The ¹¹⁹Sn resonance, along with the characteristic tin satellites ³<i>J</i>(¹H-¹¹⁹Sn) of the new organotin derivatives, indicates the high molecular symmetry and the formation of pentacoordinate diorganotin species, as supported by high-resolution mass spectrometry. The diorganotin derivatives displayed intense fluorescence emission in freshly prepared solutions at room temperature, achieving quantum yields of approximately 37% and 44%. Notably, the <i>n</i>-butyl-substituted organotin heterocycle exhibited enhanced photostability relative to the dimethyl analogue. Theoretical calculations provided insight into the role of steric effects in governing the chemical and optical stability of these diorganotin derivatives. Compound <b>3a</b> demonstrated highly sensitive spectrofluorometric recognition of Cu²⁺ ions in water, leading to complete quenching of the fluorescence emission band at 465 nm. The corresponding LOD and LOQ were 7.0 and 22.0 μM, respectively. The sensing mechanism was elucidated through a combination of vibrational spectroscopy, surface analysis, and theoretical calculations.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NiFe-LDH@MOF: A Novel MOF-Pillared Layered Double Hydroxide as an Efficient and Reusable Catalyst for the Synthesis of 2-Amino-4H-Chromenes","authors":"Setareh Ebrahimi-Vaghar,&nbsp;Fatemeh Tamaddon,&nbsp;Mehri Salimi,&nbsp;Alireza Farrokhi","doi":"10.1002/aoc.70646","DOIUrl":"https://doi.org/10.1002/aoc.70646","url":null,"abstract":"<div>\u0000 \u0000 <p>Hybridity of the layered double hydroxides (LDHs) with metal–organic frameworks (MOFs) springs synergistic effects of tunable functionality, multi-active sites, and stability for catalysis. Herein, the novel bifunctional nanocomposite NiFe-LDH@MOF was prepared by solvothermal anchoring of dual acid–base ligand 2,5-pyridinedicarboxylic acid (PDCA) onto the as-prepared NiFe-LDH. The layered conservation of LDH in nanocomposite NiFe-LDH@MOF was recognized by X-ray diffraction, microscopic images, energy-dispersive X-ray spectroscopy, surface area, and thermal analyses. Inductive coupled plasma analysis (ICP-OES revealed 28.4 wt% nickel and 3.9 wt% iron in this bifunctional organometallic nanocomposite that is admirable catalytic activity in tandem Knoevenagel, Michael, and cyclization reactions to synthesize 2-amino-4H-chromenes. Through the rewards of versatility, high product yields, rapidness, easy workup, and reusability, various chromenes were synthesized from aromatic aldehydes, malononitrile, and dimedone or β-naphthol.</p>\u0000 </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 10","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148862304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}