Inorganica Chimica Acta最新文献

{"title":"Two novel viologen-based photochromic complexes with photo-regulated fluorescence, ammonia and Cr2O72− detection performance","authors":"Mengnan Zhao ,&nbsp;Yuling Mao ,&nbsp;Jingying Chu,&nbsp;Baili Zhu,&nbsp;Boyu Shan,&nbsp;Jia Yu,&nbsp;Changbin Shao,&nbsp;Rongxin Tan,&nbsp;Minghui Zuo,&nbsp;Shuxin Cui","doi":"10.1016/j.ica.2025.122747","DOIUrl":"10.1016/j.ica.2025.122747","url":null,"abstract":"<div><div>Two viologen-derived complexes, {[Zn₃(bcbpy)₃]Cl₆·8H₂O}_n (<strong>1</strong>) and {[Cd₃(bcbpy)₃]Cl₆}_n (<strong>2</strong>), were synthesized via solvothermal methods using 1,1′-bis-((3-carboxyphenyl)-4,4′-bipyridine) dichloride (H₂bcbpy·2Cl), Zn(NO₃)₂·6H₂O and CdCl₂·2.5H₂O. Structural analysis revealed that <strong>1</strong> adopts a double-stranded 1D chain, whereas <strong>2</strong> forms a wavy 1D architecture. Both complexes displayed reversible photochromism under UV irradiation, transitioning from orange/light-yellow to blue, with <strong>2</strong> exhibiting a faster reaction rate. The photoresponse was attributed to viologen radical formation via photoinduced electron transfer, as evidenced by electron spin resonance (ESR) and X-ray photoelectron spectroscopy (XPS). Both complexes also demonstrated fluorescence modulation under light exposure. Additionally, <strong>1</strong> demonstrated rapid ammonia vapor detection through electron donation from NH₃ to viologen. Both complexes functioned as selective fluorescence sensors for Cr₂O₇²⁻, achieving detection limits of 1.10 μM (<strong>1</strong>) and 5.87 μM (<strong>2</strong>). This study provides a strategy for designing multifunctional materials with integrated chromic and sensing properties.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122747"},"PeriodicalIF":2.7,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and environmental security application of a cd(II) coordination polymer: Degradation and sensing of nitroaromatic compounds","authors":"Yiguo Ayue ,&nbsp;Rafael E. Rodríguez-Lugo ,&nbsp;Jingyi Liang ,&nbsp;Marco Bellini ,&nbsp;Lu Lu ,&nbsp;Istikhar A. Ansari ,&nbsp;Feng Jiang ,&nbsp;Mohd Afzal ,&nbsp;Abdullah Alarifi","doi":"10.1016/j.ica.2025.122746","DOIUrl":"10.1016/j.ica.2025.122746","url":null,"abstract":"<div><div>The development of functional coordination polymer with photocatalytic capabilities has gained attention for environmental cleanup and security applications. Here, we reported the synthesis, structural characterization, and photocatalytic activity of a Cd(II) coordination polymer, [Cd(L)(Im)]_n (H₂L = 4,4′-{(1,2-phenylenebis(methylene)bis(oxy)}dibenzoic acid and Im = Imidazole) (<strong>1</strong>), designed for the visible-light-driven degradation and sensing of nitro-aromatic compounds. CP <strong>1</strong> was synthesized hydrothermally using and characterized by single-crystal XRD, FT-IR, UV–Vis spectroscopy, PXRD, and TGA. Photocatalytic studies show that <strong>1</strong> effectively sensing of nitroaromatic compounds such as m-nitrophenol (MNP), sodium <em>p</em>-nitrophenol (SNP), and 4-nitrotoluene (PNT) at ppb levels, following pseudo-first-order kinetics. Mechanistic investigations suggest that superoxide radicals (O₂^•-) play a key role in the degradation process. Additionally, recyclability tests confirm the material's stability and reusability. This work highlights the potential of Cd(II)-based coordination polymers as efficient and reusable photocatalysts for environmental and security applications.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122746"},"PeriodicalIF":2.7,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908055","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":"Study on the catalytic performance and kinetics of ethylene oligomerization catalyzed by Salicylaldiminato Phthalocyanine nickel catalyst","authors":"Na Zhang ,&nbsp;Xiaoyue Wang ,&nbsp;Sen Shen ,&nbsp;Guohui Qi ,&nbsp;Liduo Chen ,&nbsp;Cuiqin Li ,&nbsp;Jun Wang","doi":"10.1016/j.ica.2025.122744","DOIUrl":"10.1016/j.ica.2025.122744","url":null,"abstract":"<div><div>A novel salicylaldiminato phthalocyanine nickel catalyst was prepared and characterized by FT-IR, UV–Vis, ¹H NMR, ICP-MS, TG-DSC and elemental analysis. The catalytic performance of ethylene oligomerization catalyzed by salicylaldiminato phthalocyanine nickel catalyst was investigated. The catalytic activity could reach up to 1.25 <strong>×</strong> 10⁶ g (mol Ni·h)⁻¹, and the products were mainly butene, hexene as well as a small amount of octene when the cyclohexane was used as solvent, the MAO was used as co-catalyst. In addition, the kinetics of ethylene oligomerization was also investigated. The kinetic parameters such as the reaction order to the nickel molar concentration (<em>n</em>) and oligomerization pressure (<em>m</em>), the apparent activation energy (<em>E</em>a) and the pre-exponential factor (A) were determined. The result indicated that the reaction order to the nickel molar concentration was 1.18, the reaction order to oligomerization pressure was 1.12, and the apparent activation energy was 54.78 kJ/mol when the nickel concentration was 5 μmol/L, the oligomerization pressure was 1.0 MPa, and the oligomerization temperature was 5–35 °C.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122744"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903673","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":"Investigating DNA-interaction and anticancer activity of new Cu+2 complex coordinated with dipicolinic acid. Experimental and computational studies","authors":"Ameneh Heidari ,&nbsp;Effat Dehghanian ,&nbsp;Somaye Shahraki ,&nbsp;Zohreh Razmara ,&nbsp;Mostafa Heidari Majd ,&nbsp;Hamid Ahmar ,&nbsp;Mansoureh Rakhshanipour ,&nbsp;Srikanta Goswami","doi":"10.1016/j.ica.2025.122730","DOIUrl":"10.1016/j.ica.2025.122730","url":null,"abstract":"<div><div>A complex formulized as [Cu(dmpn)₂(OH₂)][Cu₂(DPA)₄μ-Cu(dmpn)₂].H₂O (<strong>1</strong>), where dmpn is 2,2′-dimethyl-1,3-diaminepropane and DPA is dipicolinic acid (H₂dipic), was synthesized and characterized by X-ray crystallography, conductivity measurement, thermogravimetric (TG) analysis, spectroscopic methods (IR, Mass, UV–Vis, EPR). Magnetic properties of complex (<strong>1</strong>) were studied at room temperature with vibrating sample magnetometer (VSM). The results indicated that the complex exhibits paramagnetic behavior. The initial in vitro cytotoxic activity of complex (<strong>1</strong>) showed promising results against HCT116 colon cell lines compared to the known anticancer drugs such as cisplatin. In the recent study, the mode of interaction between DNA and complex (<strong>1</strong>) was explored using different techniques. The experiments revealed that the mechanism of fluorescence quenching is static and the characteristic of this interaction is exothermic. The apparent binding constant (K_app = 1.9 × 10³ M⁻¹) shows that the interaction between the Cu(II) complex and DNA is probably non-intercalation. Based on other data, it can be suggested that hydrogen bonding, and van der Waals forces play a major role in this interaction. Molecular docking simulation supported the achieved experimental results. Likewise, complex (<strong>1</strong>) shows nuclease activity in the presence of H₂O₂ and can cleavage the structure of DNA.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122730"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A selective turn-on fluorescent probe for detecting Al3+ based on coumarin and its practical application","authors":"Zheng Li ,&nbsp;Xiaofei Dong ,&nbsp;Chenggen Zhang ,&nbsp;Ruina Liu ,&nbsp;Ziyu Li ,&nbsp;Jingjing Yan","doi":"10.1016/j.ica.2025.122742","DOIUrl":"10.1016/j.ica.2025.122742","url":null,"abstract":"<div><div>A selective turn-on fluorescent probe <strong>MCNH</strong> for Al³⁺ derived from coumarin and nicotine hydrazide was synthesized and characterized. Probe <strong>MCNH</strong> exhibited a good selectivity towards Al³⁺ in DMF buffer solution accompanied by color change from colorless to blue in UV dark box. <strong>MCNH</strong> bond with Al³⁺ in a 2: 1 mannner.</div><div>The quantum yield of probe <strong>MCNH</strong> and its complex was found to be 1.36 % and 33.97 %, respectively. Probe <strong>MCNH</strong> has good anti-interference ability against other coexisting metal ions. The detection limit was estimated to be 0.45 μM, which was lower than the maximum concentration of Al³⁺ in potable water specified by WHO. The response time of the probe to Al³⁺ was 120 s and the suitable pH range was 4–7. The recognition mechanism was studied by NMR titration experiment, mass spectrometry analysis and was supported by DFT calculations. Furthermore, probe <strong>MCNH</strong> was successfully applied in test stripes and fluorescent film for detecting Al³⁺ in liquid and solid state.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122742"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903672","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":"Structural and spectroscopic characterization of Zn(II) complexes: A computational perspective on anticorrosion potential of bronze surface","authors":"Amir Karim ,&nbsp;Munsif Jan ,&nbsp;Rahime Eshaghi Malekshah ,&nbsp;Najeeb Ullah ,&nbsp;Nida Ali ,&nbsp;Ali Haider ,&nbsp;Muhammad Iqbal ,&nbsp;Saqib Ali ,&nbsp;Sodio C.N. Hsu ,&nbsp;Muhammad Nawaz Tahir","doi":"10.1016/j.ica.2025.122731","DOIUrl":"10.1016/j.ica.2025.122731","url":null,"abstract":"<div><div>The coordination of Zn(II) carboxylates with nitrogen donor ligands significantly influences the physicochemical properties of metal complexes, due to their structural diversity. Herein, we report the synthesis and characterization of Zn(II) heteroleptic complexes with the general formulae [(<strong>L1</strong>)₂Zn(bipy)] (<strong>1</strong>), [(<strong>L2</strong>)₂Zn(bipy)] (<strong>2</strong>), [(<strong>L3</strong>)₂Zn(quinoline) (H₂O)] (<strong>3</strong>), [(<strong>L4</strong>)₂Zn(quinoline) (H₂O)] (<strong>4</strong>), and [(<strong>L5</strong>)₂Zn(quinoline) (H₂O)] (<strong>5</strong>), where <strong>L1</strong>–<strong>L5</strong> represent benzoic acid or phenyl acetic acid derivatives, and bipy denotes 2,2-bipyridne. All complexes were thoroughly characterized using FTIR, UV–vis, and ¹H/¹³C NMR (for complexes <strong>3</strong>–<strong>5</strong> only). The structures of <strong>1</strong> and <strong>2</strong> were further confirmed by single-crystal X-ray diffraction. All complexes are mononuclear, incorporating two carboxylate ligands. Complexes 1 and 2 contain one 2,2′-bipyridine ligand, while complexes <strong>3</strong>–<strong>5</strong> feature a quinoline ligand and a water molecule. Most of the complexes adopt hexacoordinated structures. However, complex <strong>1</strong> is tetra-coordinated, exhibiting a distorted tetrahedral geometry. Various coordination modes are observed, including both monodentate <strong>1</strong>, a combination of monodentate and bidentate (<strong>3</strong>–<strong>5</strong>), and both bidentate coordination <strong>2</strong>. All the complexes were optimized for their HOMO/LUMO energy by using DFT<img>D. The anticorrosion ability of all complexes was evaluated by Monte Carlo (MC) and molecular dynamics (MD) simulations. MC and MD simulations of complexes <strong>1</strong>–<strong>5</strong> on the bronze (100) surface, along with negative adsorption energies, reveal strong first-layer localization through both chemisorption and physisorption. The degree of adsorption of complexes <strong>1</strong>–<strong>5</strong> follows the order <strong>3</strong> &gt; <strong>2</strong> &gt; <strong>5</strong> &gt; <strong>4</strong> &gt; <strong>1</strong>.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122731"},"PeriodicalIF":2.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892262","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":"Trinuclear rhenium bromide cluster Re3Br9 as a product of thermal decomposition of Re3I3Br6 and a precursor for Re(CO)5Br","authors":"Elena Gorbachuk ,&nbsp;Maxim Mikhaylov ,&nbsp;Taisiya Sukhikh ,&nbsp;Maxim Sokolov ,&nbsp;Dmitry Yakhvarov","doi":"10.1016/j.ica.2025.122729","DOIUrl":"10.1016/j.ica.2025.122729","url":null,"abstract":"<div><div>The heating of Re₃I₃Br₆ up to 450 °C led to the formation of Re₃Br₉. Carbonylation of Re₃Br₉ with HCOOH at 130°С in concentrated HBr leads to the formation of Re(CO)₅Br in a good yield. The formation of Re₃Br₉ and Re(CO)₅Br was confirmed by single crystal X-ray diffraction analysis. The cluster phase Re₃Br₉ was characterized by powder X-ray diffraction analysis and energy-dispersive spectroscopy. Re(CO)₅Br was additionally identified by energy-dispersive spectroscopy and Raman spectroscopy. New structures have been determined for an aquation product of Re₃Br₉, [Re₃Br₉(H₂O)₃]·3Et₂O, and for (PyH)₂ReBr₆, which was obtained as pyridinium by extraction with HBr of a by-product of the thermal decomposition of Re₃I₃Br₆. Re₃I₃Br₆ was characterized by thermogravimetric analysis.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122729"},"PeriodicalIF":2.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new non-centrosymmetric cuprate (II) hybrid compound [C16H36N]3(Cu2Br6)(CuBr3): Study of structural and dielectric behavior","authors":"Mouna Harzallah ,&nbsp;Yahya Bahrouni ,&nbsp;Ch. Rayssi ,&nbsp;Thierry Roisnel ,&nbsp;Abderrazek Oueslati ,&nbsp;Brahim Ayed","doi":"10.1016/j.ica.2025.122732","DOIUrl":"10.1016/j.ica.2025.122732","url":null,"abstract":"<div><div>A novel organic-inorganic hybrid material, [C₁₆H₃₆N]₃(Cu₂Br₆)(CuBr₃), was synthesized via slow evaporation and extensively characterized. Techniques such as X-ray diffraction, SEM/EDX, IR spectroscopy, and electric and dielectric studies were applied. Examination of the crystal structure reveals that the synthesized material adopts an orthorhombic system, specifically belonging to the <em>P</em>2₁2₁2 space group, with unit cell parameters a = 25.635 Å, b = 25.996 Å, c = 20.431 Å, V = 13615.3ų, and Z = 8. Purity confirmation was established through powder X-ray diffraction analysis. Composition verification was carried out using semiquantitative EDXS analysis. The asymmetric unit consists of three tetrabutylammonium organic cations [C₁₆H₃₆N]³⁺, two [Cu₂Br₆]²groups, and one [CuBr₃] group, forming a 0D anionic network. C–H⋯Br hydrogen bonding combines to create a 3D hydrogen-bonded network, maintaining crystal stability. IR spectral analysis corroborated the compound's characterstics at room temperature. Impedance spectroscopy highlighted the compound's electrical properties, and the fitting of the Nyquist plot revealed that both inter- and intra-grains contribute to relaxation. The equivalent circuit is modeled by a combination of two parallel R-CPEs connected in series to explain the impedance results.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122732"},"PeriodicalIF":2.7,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892261","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, structure and luminescent sensing behaviour of a thieno[3,4-b]thiophene-based coordination polymer","authors":"Ye-Feng Wu,&nbsp;Yu-Chen Ma,&nbsp;Quan Yuan,&nbsp;Ze-Xu An,&nbsp;Yong-Jun Liu,&nbsp;Jun Yi,&nbsp;Xiao-Yan Tang,&nbsp;Yun-Sheng Ma,&nbsp;Wen-Yu Yin,&nbsp;Hong-Jian Cheng","doi":"10.1016/j.ica.2025.122733","DOIUrl":"10.1016/j.ica.2025.122733","url":null,"abstract":"<div><div>Thiophene-based functional materials have always been a research hotspot due to their broad application prospects in fields such as optoelectronics, sensing, biomedical science, etc. Solvothermal reaction of 3,6-di(pyridin-3-yl)-2,4-di(3-pyridylcarbonyl)thieno[3,4-<em>b</em>]thiophene (tptbt) with Cd(OAc)₂·2H₂O and 1,4-benzenedicarboxylic acid (1,4-H₂bdc) at 100 °C gave rise to one coordination polymer {[Cd(1,4-bdc)(tptbt]·0.75H₂O}_n (<strong>1</strong>). Complex <strong>1</strong> exhibits a 3D binodal (3,5)-connected network with the (4²·6)(4²·6⁵·8³) topology, which is formed by linking 1D [Cd(tptbt)]_n ribbon-like units with 1,4-bdc ligands. The solid state luminescences of tptbt and <strong>1</strong> were investigated. Complex <strong>1</strong> showed outstanding luminescent sensing performances for water, cations Fe³⁺ and anions Cr₂O₇²⁻ owing to the quenching effect. Moreover, the mechanochromic luminescences of tptbt and <strong>1</strong> were also tested.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122733"},"PeriodicalIF":2.7,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883054","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":"2-(1H-imidazol-2-yl)aniline bearing ligands and their cobalt complexes: Synthesis, characterisation, antimicrobial activity and oxidative coupling of o-aminophenol","authors":"Raymond Akong Akong ,&nbsp;Helmar Görls ,&nbsp;Joseph Anthony Orighomisan Woods ,&nbsp;Blessing Ifeoma Nwadike ,&nbsp;Abimbola Olumide Adekanmbi ,&nbsp;Winfried Plass ,&nbsp;Abiodun Omokehinde Eseola","doi":"10.1016/j.ica.2025.122716","DOIUrl":"10.1016/j.ica.2025.122716","url":null,"abstract":"<div><div>We report a family of imidazole based Schiff bases obtained by condensation of 2-(1<em>H</em>-imidazol-2-yl)aniline scaffolds with salicylaldehyde (<strong>HL</strong>_{<strong>1</strong>}, <strong>HL</strong>_{<strong>3</strong>} – <strong>HL</strong>_{<strong>5</strong>}) {<strong>HL</strong>_{<strong>1</strong>} = (<em>E</em>)-2-(((2-(4,5-diphenyl-1<em>H</em>-imidazol-2-yl)phenyl)imino)methyl)phenol; <strong>HL</strong>_{<strong>3</strong>} = (<em>E</em>)-2-(((2-(4,5-bis(4-methoxyphenyl)-1<em>H</em>-imidazol-2-yl)phenyl)imino)methyl)phenol; <strong>HL</strong>_{<strong>4</strong>} = (<em>E</em>)-2-(((2-(4,5-bis(4-methoxyphenyl)-1-methyl-1<em>H</em>-imidazol-2-yl)phenyl)imino)methyl)phenol; <strong>HL</strong>_{<strong>5</strong>} = (<em>E</em>)-2-(((2-(1,4,5-triphenyl-1<em>H</em>-imidazol-2-yl)phenyl)imino)methyl)phenol} and 2-pyridinecarboxaldehyde (<strong>L</strong>_{<strong>2</strong>} = (<em>E</em>)-2-(4,5-diphenyl-1<em>H</em>-imidazol-2-yl)-N-(pyridin-2-ylmethylene)aniline), as well as their homoleptic Co^II (<strong>1</strong>, <strong>2</strong>–<strong>7</strong>) {<strong>1</strong> = [CoL₁Cl]0.75H₂O.0.5MeOH; <strong>2</strong> = [CoL₁(OAc)]0.75H₂O; <strong>3</strong> = [CoL₂Cl₂]; <strong>4</strong> = [CoL₃Cl]1.5MeOH; <strong>5</strong> = [CoL₃(OAc)]; <strong>6</strong> = [CoL₄Cl]; <strong>7</strong> = [CoL₅Cl]} and Co^III (<strong>1v</strong> = [Co(L₁)₂]Cl.MeOH) complexes. The formulation of prepared compounds was determined by elemental analysis, NMR, MS, FT-IR, electronic absorption, magnetic susceptibility and single crystal X-ray analysis (<strong>1v</strong>, <strong>3</strong>, <strong>7</strong> and <strong>Co(I</strong>_{<strong>A4</strong>}<strong>)Cl</strong>_{<strong>2</strong>}). In the imine complexes, the Co<img>N bond lengths are longer in the neutral ligand (<strong>3</strong>) than in the anionic ligands (<strong>1v</strong> and <strong>7</strong>) and suggests high spin (HS) state in <strong>3</strong> and <strong>7</strong> (Co-<em>N</em> &gt; 2.0 Å) and low spin (LS) state in <strong>1v</strong> (Co-<em>N</em> &lt; 2.0 Å). The compounds were tested against Gram (+) and Gram (−) bacteria and exhibited better activity than one of the control used (especially in the case of <em>K. pne</em> and <em>C. freundii</em>). The catalytic efficiency of the complexes depends on the nature of the counter ion deployed, subtle changes in the molecular scaffolds and geometry.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"584 ","pages":"Article 122716"},"PeriodicalIF":2.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895212","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}