Polyhedron最新文献

{"title":"Comprehensive study of a novel cobalt(II) complex: Synthesis, X-ray crystal structure, Hirshfeld surface analysis, computational quantum investigations, and molecular docking insights","authors":"Yasmina Sabeg ,&nbsp;Rim Benali-Cherif ,&nbsp;Wahiba Falek ,&nbsp;Radhwane Takouachet ,&nbsp;Lynda Golea ,&nbsp;Muhittin Aygün ,&nbsp;Nourredine Benali-Cherif","doi":"10.1016/j.poly.2025.117445","DOIUrl":"10.1016/j.poly.2025.117445","url":null,"abstract":"<div><div>The design of metal complexes that combine structural sophistication with biological relevance has become a cornerstone of modern coordination chemistry. In this study, we present the synthesis and comprehensive characterization of a novel cobalt(II) complex, [Co(phen)₂(η²-bz)]·2bzH·NO₃ (<strong>1</strong>), featuring a distorted six-coordinate octahedral geometry, stabilized by two 1,10-phenanthroline and one benzoate ligands. The crystal structure was elucidated using single-crystal X-ray diffraction, revealing a robust supramolecular network strengthened by various non-covalent interactions, including C<img>H⋯O, O<img>H⋯O hydrogen bonds, and π–π stacking between aromatic rings. Density functional theory (DFT) calculations, employing the B3LYP/3-21G basis set, provided further insight into the optimized geometry and electronic properties, with a close match to experimental observations. Hirshfeld surface analysis quantified the intermolecular interactions, and molecular electrostatic potential (MEP) maps highlighted the reactive sites of the complex. Additionally, molecular docking studies demonstrated a strong binding affinity between the cobalt complex and Klebsiella pneumoniae receptors (PDB ID: 6RD3), suggesting potential antibacterial properties. This cobalt complex offers new insights into the structure–activity relationships of transition metal complexes and presents promising avenues for the development of novel therapeutic agents targeting multidrug-resistant bacteria. The findings from this study also pave the way for further exploration of cobalt complexes in catalytic and biomedical applications.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"271 ","pages":"Article 117445"},"PeriodicalIF":2.4,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444674","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":"Influence of ligand donation on charge transfer properties of cyanido-bridged binuclear Fe-Ru complexes","authors":"Han Liu ,&nbsp;Xiao-Lin Liu ,&nbsp;Hao Wang ,&nbsp;Yang Liu ,&nbsp;Xin-Tao Wu ,&nbsp;Tian-Lu Sheng","doi":"10.1016/j.poly.2025.117442","DOIUrl":"10.1016/j.poly.2025.117442","url":null,"abstract":"<div><div>To investigate how the electron-donating ability of the ligand influence the metal-to-metal charge transfer (MMCT) in mixed-valence (MV) systems, a series of asymmetric binuclear cyanido-bridged complexes CpMe_x(dppe)FeCNRu(bimpy)(PPh₃)(NCCH₃), <strong>N[PF₆]₂</strong> (x = 1, 3, 4, 5; N = <strong>1</strong>, <strong>2</strong>, <strong>3</strong>, <strong>4</strong>; CpMe = methylcyclopentadiene; CpMe₃ = 1, 2, 4-trimethyl-cyclopentadiene; CpMe₄ = 1, 2, 3, 4-tetramethyl-cyclopentadienyl; CpMe₅ = 1, 2, 3, 4, 5-pentamethyl-cyclopentadienyl; dppe = 1,2-bis(diphenylphosphino)ethane; bimpy = 2, 6-Bis(benzimidazol-2-yl)pyridine; PPh₃ = triphenylphosphine), along with their one-electron oxidized products <strong>N[PF₆]₃</strong> were synthesized and well characterized. In these MV systems, significant electronic interactions between the two metal centers were revealed by electrochemistry, crystallography, FTIR, UV–vis-NIR, and supported by the DFT calculations. The results showed that the MM’CT energy from the Ru^II to the Fe^III increases as the electron-donating ability of the CpMe_X ligands was enhanced with the addition of methyl substituents. Meanwhile, all the one-electron oxidized products <strong>N[PF₆]₃</strong> belong to Class II systems.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"271 ","pages":"Article 117442"},"PeriodicalIF":2.4,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438273","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":"Z-scheme design of hydrothermally synthesized Sm-Fe-doped LaNiO3/g-C3N4 heterostructure photo-catalyst for the efficient elimination of methylene blue & moxifloxacin pollutants","authors":"Shahid Iqbal ,&nbsp;Firdous Bibi ,&nbsp;Muhammad Jamshaid ,&nbsp;Ambreen Kalsoom ,&nbsp;Wedad A. Al-onazi ,&nbsp;Mohamed S. Elshikh ,&nbsp;Md Rezaul Karim ,&nbsp;Ismail Hossain","doi":"10.1016/j.poly.2025.117446","DOIUrl":"10.1016/j.poly.2025.117446","url":null,"abstract":"<div><div>In this current investigation, it deals with the synthesis of a highly effective Z-scheme visible light-driven Sm-Fe-doped LaNiO₃/g-C₃N₄ hetero-structure photocatalyst for the efficient elimination of toxic environmental pollutants from wastewater. Pristine LaNiO₃ nanoparticles (NP), samarium, and iron (Sm-Fe) doped LaNiO₃ NP and their nanohybrid composite Sm-Fe doped LaNiO₃/g-C₃N₄ with 15 % (g-C₃N₄) graphitic-carbon-nitride was prepared via facile glycerine-assisted hydrothermal and ultra-sonication approaches. The materials for their physico-chemical properties were characterized using SEM, TEM, P-XRD, FTIR, XPS, BET, I-V, VSM, PL, and UV–visible analysis. The morphological analysis revealed that the g-C₃N₄ sheets interact and buffer with Sm-Fe-doped LaNiO₃ NP, forming larger, elongated aggregations having highly exposed surfaces, wider particle size distributions and possessing an average particle sizes 22–34 nm. Structural investigation demonstrated the single-phase rhombohedral LaNiO₃ perovskite along with successful Sm and Fe cation doping. The Sm-Fe-doped LaNiO₃/g-C₃N₄ nanohybrid materials exhibited excellent BET surface area (96.7 m²/g), a well-porous nature with average pore sizes in the 1.5–2.6 nm range, good saturation magnetization (2.204 <span><math><mo>×</mo></math></span> 10⁻³ Ms/emu), boosted electrical conductivity (1.09 <span><math><mo>×</mo></math></span> 10² Sm⁻¹) and a narrow band gap (2.06 eV), which was credited to the Sm-Fe-doping and the combination of highly conducting g-C₃N₄ material. It was demonstrated that Sm-Fe-doped LaNiO₃ NP were uniformly dispersed on g-C₃N₄ nanohybrids, forming an intimate interface with robust interaction between LaNiO₃ and the g-C₃N₄, which promoted efficient charge mobility and separation, forming a Z-scheme photocatalytic system. The photo-degradation investigation of the newly synthesized photo-catalyst was tested against methylene blue (MB) dye and moxifloxacin (MOX) drug under solar-light irradiation. The Sm-Fe-doped LaNiO₃/g-C₃N₄ nanohybrid photocatalyst exhibited excellent removal of MB dye (97.8 %) and MOX (96.4 %) in only 55 min. This superb removal proficiency of MB dye and MOX by Sm-Fe-doped LaNiO₃/g-C₃N₄ nanohybrid was attributed to its improved magnetic, good electrical, well-porosity, and excellent optical absorption characteristics, which make the Sm-Fe-doped LaNiO₃/g-C₃N₄ nanohybrid as a novel materials for removing toxic environmental pollutants.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117446"},"PeriodicalIF":2.4,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419057","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":"Soluble peripherally tert-butylphenoxy/tert-butylcarbazole substituted zinc phthalocyanines and their photophysical properties","authors":"E.N. Ovchenkova,&nbsp;N.G. Bichan,&nbsp;M.S. Gruzdev,&nbsp;V.A. Mozgova,&nbsp;U.V. Chervonova,&nbsp;T.N. Lomova","doi":"10.1016/j.poly.2025.117447","DOIUrl":"10.1016/j.poly.2025.117447","url":null,"abstract":"<div><div>Zinc(II) phthalocyanines containing eight <em>tert</em>-butylphenoxy and <em>tert</em>-butylcarbazole groups at the molecule periphery (ZnPc(<em>^t</em>BuPhO)₈ and ZnPc(Carb)₈, respectively) were obtained with about 20 % yield by the DBU activated phthalonitrile tetramerization in pentanol and dry quinoline, respectively. Their structure was confirmed using MALDI-TOF mass spectrometry, IR, ¹H/¹³C NMR, and electronic absorption/fluorescence spectroscopy. The ZnPc(<em>^t</em>BuPhO)₈/ZnPc(Carb)₈/H₂Pc(<em>^t</em>BuPhO)₈ photophysical parameters, including the Q-band wavelength, fluorescence/singlet oxygen quantum yields, fluorescence lifetime, and radiative/non-radiative transition constant in organic solvents, were established. The presence of ZnPc(<em>^t</em>BuPhO)₈ and ZnPc(Carb)₈ long-life excited states is confirmed by the fs-TA data. The peripheral carbazole substitution decreases slightly both the fluorescence quantum yield and fluorescence lifetime (by ∼0.6 ns) relative to that for ZnPc(<em>^t</em>BuPhO)₈, but simultaneously increases the possibility of singlet oxygen generation. The formation of the H₂Pc(<em>^t</em>BuPhO)₈ proton transfer complex in dimethylformamide leading to the increase in singlet oxygen yield more than 3 times was established. Attractive photophysical parameters, non-aggregated state in solutions, and the bathochromically located Q absorption band allow us to consider ZnPc(Carb)₈ as a promising photosensitizer.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117447"},"PeriodicalIF":2.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419056","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(II) complexes of thiophenyl imino-ligand with synergistic behavior in biological systems, ct-DNA interactions, and catalytic oxidative performance of benzyl alcohol","authors":"Mohamed Shaker S. Adam ,&nbsp;Zakaria S. Bakhuraisa ,&nbsp;Mustafa J. Abdelmageed Abualreish ,&nbsp;Ahmed Desoky M. Mohamad ,&nbsp;Mamdouh A. Mohamed","doi":"10.1016/j.poly.2025.117441","DOIUrl":"10.1016/j.poly.2025.117441","url":null,"abstract":"<div><div>Considering a facile synthesis and high coordination ability of substituted imines, a condensation reaction between 2-aminobenzenethiol and thiophene-2-carbaldehyde produced an interesting derivative of the thiophenyl imine ligand (HLSNS). The coordination feature of HLSNS with Mn(II) ions was studied in 1 and 2: 1 M ratios, leading to the formation of two different structural complexes, MnLSNSCl and Mn(LSNS)₂, respectively. Their chemical structures were validated by several suitable techniques, covering also the micro-elemental analyses, thermogravimetric evaluation, magnetic properties, and conductivity behaviors. Biologically, the inhibitory action of HLSNS (the free ligand) and its Mn(II)-chelating reagents on the growth power of three common bacterial and fungal strains, beside three established human cancer cell lines, were evaluated in relation to the presented Mn(II) ion and the structural influences of MnLSNSCl and Mn(LSNS)₂ compared to their free ligand (HLSNS). The antimicrobial and anticancer behavior was estimated based on the measured inhibitory zone (mm) and the half-effective inhibitory concentrations (<em>IC</em>₅₀, mM). Discovering the pivotal influence of Mn(II) ions and their ratios in the two chelates on the binding strength to the calf thymus DNA (ct-DNA), which reported by the alterations in viscosity and spectrophotometric properties of DNA. The ct-DNA interaction strength was built on the values of binding constants, Gibb’s free energy, and chromism modes, confirming also the interaction modes. For the catalytic potential testing, both MnLSNSCl and Mn(LSNS)₂ were employed for the oxidative progressing of benzyl alcohol using hydrogen peroxide in a homogenous phase at 80 °C. Both catalysts exhibited superior catalytic oxidative activity. The yield percentage of selective benzaldehyde using MnLSNSCl and Mn(LSNS)₂ was 90 % after 4 h, and 84 % after 5 h, respectively. The discrepancy in the optimum activity for both catalysts pertained to the differences in their molecular structures, which helped to assume a convenient mechanism.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117441"},"PeriodicalIF":2.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394363","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 and characterizations of a phenolato coordinate gallium(III) porphyrin: A metalloporphyrin with stabilized axial ligand bonding","authors":"Shafikul Islam ,&nbsp;Keita Fukui ,&nbsp;Md. Moshiur Rahman ,&nbsp;Kazunori Hirabayashi ,&nbsp;Toshio Shimizu ,&nbsp;Masafumi Ueda ,&nbsp;Masashi Hasegawa ,&nbsp;Hiroyasu Sato ,&nbsp;Ken-ichi Sugiura","doi":"10.1016/j.poly.2025.117439","DOIUrl":"10.1016/j.poly.2025.117439","url":null,"abstract":"<div><div>To obtain stable metal–ligand bonding in metalloporphyrins, a phenolato-coordinated gallium(III) porphyrin (Ga³⁺Por) was designed, synthesized, and characterized. The strategy behind this chemistry is that the hard acid Ga³⁺ forms a stable bond with the hard base phenolato, PhO⁻. The title complex was synthesized through a dehydration reaction between phenol and the hydroxo complex of Ga³⁺Por. The stability of the Ga-O coordination bond facilitates the detection of the parent ion signal in atmospheric pressure chemical ionization mass spectrometry, as well as in conventional experimental techniques, such as recrystallization from a hot solvent under ambient conditions. Single-crystal diffraction studies revealed that the coordination geometry of the ligand resulted in a five-coordinate Ga³⁺Por. In addition to the usual spectroscopic studies, including absorption and emission spectra, electrochemical analyses were also performed. The positively shifted oxidation potential can be explained by the incorporation of gallium, which has an insufficient shielding effect because of its filled <em>d</em>-electrons.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"271 ","pages":"Article 117439"},"PeriodicalIF":2.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453875","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 and catalytic properties of binuclear IrIII–IrIII complex containing pyridylpyrrole ligand","authors":"Guo-Ling Zhao ,&nbsp;Bo Kong ,&nbsp;Zhi-Guo Wang ,&nbsp;Xiu-Fang Mo ,&nbsp;Xiao-Yi Yi","doi":"10.1016/j.poly.2025.117444","DOIUrl":"10.1016/j.poly.2025.117444","url":null,"abstract":"<div><div>Treatment of pyrrole-cyclometalated Ir^III starting [Ir^III(<em>K</em>²_C,<em>_N</em>-dpp)(H)(Cl)(PPh₃)₂] (Hdpp = 2-[5-(pyridin-2-yl)-1H-pyrrol-2-yl]pyridine) and [Ir^IIICp*Cl₂]₂ in the presence of base affords binuclear Ir^III–Ir^III complex [Ir^III (H)(Cl)(PPh₃)₂(μ-dpp)Ir^IIICp*(Cl)] (<strong>1</strong>). The structural analysis of <strong>1</strong> displays two Ir^III centers are linked by dpp²⁻ ligand with novel μ-(<em>K</em>²_C,N,<em>K</em>²_N′,N″) coordination mode. The catalytic performance of <strong>1</strong> for formic acid dehydrogenation in water and CO₂ hydrogenation is explored.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117444"},"PeriodicalIF":2.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143386586","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 and luminescent properties of silver(I) complexes with 5-sulfosalicylic acid and imidazole derivatives","authors":"Eda Çavuş Kaya ,&nbsp;Figen Arslan Biçer ,&nbsp;Ertan Şahin ,&nbsp;Okan Zafer Yeşilel","doi":"10.1016/j.poly.2025.117443","DOIUrl":"10.1016/j.poly.2025.117443","url":null,"abstract":"<div><div>Three new Ag(I) coordination compounds, namely, (imH)₂[Ag₂(μ-Hssal)₂(H₂O)₂] (<strong>1</strong>), {(2mimH)₂[Ag₂(μ₃-Hssal)₂(H₂O)₂]}_n (<strong>2</strong>) and [Ag₂(µ₄-Hssal)(dmim)₂]_n (<strong>3</strong>) with 5-sulfosalicylic acid (H₃ssal) and varying imidazole derivatives (imidazole (im), 2-methylimidazole (2mim), 1,2-dimethylimidazole (dmim)) were synthesized and characterized by IR spectroscopy, elemental analysis, thermal analysis, and single crystal X-ray diffraction techniques. While imidazole and 2-methylimidazole act as counter ions outside the coordination sphere as cations by undergoing proton transfer in complexes <strong>1</strong> and <strong>2</strong>, 1,2-dimethylimidazole serves as a ligand in complex <strong>3</strong>. Complex <strong>1</strong> is a binuclear compound while complex <strong>2</strong> is two-dimensional (2D) coordination polymer, and complex <strong>3</strong> is one-dimensional (1D) coordination polymer. The complexes <strong>1–3</strong> exhibite ligand-supported argentophilic Ag⋯Ag interactions. The luminescent properties of the complexes are also discussed.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117443"},"PeriodicalIF":2.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403176","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":"Chemistry of uranium and thorium complexes towards challenging transformation: A recent trends","authors":"Aditya L. Shinde ,&nbsp;Priyanka Velmurugan ,&nbsp;Akash K. Sahoo ,&nbsp;Shanmugam Revathi ,&nbsp;Manickaraj Meena ,&nbsp;Preethi Raja ,&nbsp;Moris S. Eisen ,&nbsp;Tapas Ghatak","doi":"10.1016/j.poly.2025.117428","DOIUrl":"10.1016/j.poly.2025.117428","url":null,"abstract":"<div><div>Over the last hundred years, significant progress has been made in the chemistry of organo-f complexes, enhancing our understanding of their reactivity in both stoichiometric and catalytic processes. In the last three decades, there has been a significant rise in interest surrounding the electrophilic d⁰/f<em>ⁿ</em> chemistry of organo-f element complexes, attributable to their distinctive structure–reactivity relationships and remarkable efficacy in homogeneous catalysis. The influence of ligand design, encompassing electronic and steric considerations, on the catalytic efficacy of organo-f-complexes in diverse organic reactions is now broadly acknowledged. Notable progress in actinide chemistry has underscored their unique efficacy compared to lanthanides and transition metals. The stability of low-valent actinide complexes and the function of 5f orbitals in bonding and reactivity are, nevertheless, issues that continue to be extensively debated. Although actinides may share certain characteristics with transition metals in their chemical behaviors, they frequently reveal complementary or even enhanced reactivity. The increasing number of records in the Cambridge database highlights their escalating significance, facilitating more advanced chemical designs. The conventional view of actinide complexes as highly oxophilic has been limited by catalytic poisoning, which has restricted their use in oxygen-related processes. As a result, applications for these compounds have mostly found usage in cyclic ester polymerization, small-molecule activation, and hydroelementation. This review presents a comprehensive update on the synthesis, characteristics, and applications of important organoactinide complexes in organic processes. In conclusion, we present our Quo Vadis perspective, posing critical inquiries and articulating our insights regarding the future trends and advancements in this domain.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117428"},"PeriodicalIF":2.4,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394364","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":"Crosslinked polyacrylamide stabilized Cu(I) catalyst for efficient synthesis of 1,2,3-triazoles via click reactions","authors":"Ali Rahmatpour ,&nbsp;Mozhgan Amiri Baramkohi","doi":"10.1016/j.poly.2025.117429","DOIUrl":"10.1016/j.poly.2025.117429","url":null,"abstract":"<div><div>The stability of crosslinked polyacrylamide and its ability to be modified for use in a variety of applications make it an excellent support material in heterogeneous systems. Herein, we report a novel catalyst derived from copper(I)-Schiff base complex and its immobilization into crosslinked polyacrylamide which was synthesized by a two-step process, followed by the fixation of copper(I) (CPAM_SL@CuI). Various techniques were used to characterize the developed polymeric copper(I) catalyst.These methods included FTIR, ICP, DR-UV–vis., FTIR, XRD, FE-SEM, EDAX, TEM, TG/DTGA, and elemental analysis. The CPAM anchored copper(I) Schiff base complex demonstrated remarkably high catalytic activity in heterogeneous three-component click reactions of alkyl or benzyl halides, sodium azide, and terminal alkynes in water at room temperature with a low catalyst loading without adding any additives yielding 1,4-disubstituted 1,2,3-triazoles without generating any waste. Furthermore, the newly developed polymeric copper(I) catalyst could be recovered and reused six consecutive times without significantly reducing the reaction yield.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"270 ","pages":"Article 117429"},"PeriodicalIF":2.4,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143386691","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}