Inorganica Chimica Acta最新文献

{"title":"Investigation of vibrational properties of rare-earth ruddlesden-popper nickelates Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd)","authors":"Neenu Saini ,&nbsp;Ruby Jindal ,&nbsp;Archana Tripathi ,&nbsp;Uma Shekhawat ,&nbsp;Reechu Saini ,&nbsp;Naveen Kumar","doi":"10.1016/j.ica.2025.123005","DOIUrl":"10.1016/j.ica.2025.123005","url":null,"abstract":"<div><div>The Raman and Infrared (IR) phonon analysis of monolayer Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) rare-earth Ruddlesden-Popper (RP) Nickelates in the tetragonal phase, which have potential applications as electrocatalysts for solid oxide cells, has been carried out using normal coordinates. The Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) Ruddlesden-Popper compounds possess <span><math><msubsup><mi>D</mi><mn>17</mn><mrow><mn>4</mn><mi>h</mi></mrow></msubsup></math></span> Point Group Symmetry, fall under the space group 139, and crystallize in the phase I4/mmm with a formula unit number Z = 2. The Layered Perovskite Oxides Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) represent the initial members of the Ruddlesden-Popper Nickelates Series, which are structurally defined by the general stoichiometry Ln_n+1Ni_nO_3n+1 (Ln = La, Pr, Nd, Eu, Gd) with <em>n</em> = 1. The theoretical analysis of the optical phonon modes in Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) Ruddlesden-Popper Nickelates crystallizing in the I4/mmm structural phase employs a set of nine Short-Range Force Constants (SRFCs). Wilson's GF-Matrix Method has characterized and assigned the optical vibrational modes in rare-earth Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) Ruddlesden-Popper Nickelates. The study further investigates the impact of the A-site Lanthanide cation-Ln (Ln = La, Pr, Nd, Eu, Gd) substitution on the lattice dynamics of the isostructural compounds Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) within the framework of monolayered tetragonal structures. To elucidate the effects of cation-Ln substitution, a comparative analysis of the frequencies at the zone centre, bond lengths, and force constants is conducted. The vibrational frequencies primarily governed by the Ln-atoms (Ln = La, Pr, Nd, Eu, Gd) display unique features that change with atomic number, highlighting the significant influence of Ln-ion size on the phonon dynamics of Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) rare-earth Nickel Oxides. Furthermore, for each normal mode in the Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) rare-earth Ruddlesden-Popper Nickelates, the study of Potential Energy Distribution (PED) emphasizes the considerable role played by Short-Range Force Constants in shaping the wavenumbers, thereby offering a deeper insight into the lattice dynamics and interatomic interactions. Layered Perovskite Oxides Ln₂NiO₄ (Ln = La, Pr, Nd, Eu, Gd) exhibit key Ln<img>O and Ni<img>O phonon modes that govern oxygen ion transport, defect chemistry, and SOFC efficiency.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"592 ","pages":"Article 123005"},"PeriodicalIF":3.2,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645729","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":"Advancing anticancer chelation therapy: Insights from enhancing cytotoxic potency, targeted cellular delivery, metal-based immunomodulation, and combinatorial strategies","authors":"Carmen Acosta ,&nbsp;Oscar Claudio-Ares ,&nbsp;Irfan Ullah ,&nbsp;Laura Catalina Cruz ,&nbsp;Adam C. Ducey,&nbsp;Adriana Vidal,&nbsp;Alejandro Escalante-Castaneda,&nbsp;Ambar R. Maldonado-Santos,&nbsp;Biao Liu,&nbsp;Cristina N. Villanueva,&nbsp;Diego A. Martínez-Sebastian,&nbsp;Jubilie Zeda-Rodríguez,&nbsp;Norian Ceballos-Plaza,&nbsp;Sofía V. González-Tossas,&nbsp;Stephanie K. Reyes-Vargas,&nbsp;Wilarye Trujillo-Rivera,&nbsp;Wentao Hou,&nbsp;Yailiz A. Velez-Pizarro,&nbsp;Yiomaris Rodríguez-Manzano,&nbsp;Arthur D. Tinoco","doi":"10.1016/j.ica.2025.123004","DOIUrl":"10.1016/j.ica.2025.123004","url":null,"abstract":"<div><div>Chelation therapy has long been recognized for its success in treating heavy metal poisoning and iron overload disorders. Building on this foundation, drug repurposing of FDA-approved iron chelators for anticancer therapy has been extensively explored, alongside the development of novel agents such as the promising triapine. Current research increasingly targets the essential metals iron, copper, and zinc in oncology, with a focus on chelators that actively modulate the biochemical effects of these metals rather than functioning as ionophores. This review highlights recent advances in refining chelation strategies to enhance cytotoxic potency and tumor specificity, including approaches that tune metal redox activity, synergize with platinum(II)-based drugs, incorporate nanoparticulate delivery systems, leverage metal-driven immunostimulation, and combine with established or emerging therapies. By assessing the successes and limitations of recent studies and surveying relevant human clinical trials, we evaluate the feasibility of integrating chelation therapy into clinical oncology. Evidence suggests that chelation is most effective when combined with other treatment modalities, offering potential synergistic benefits in cancer management.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"592 ","pages":"Article 123004"},"PeriodicalIF":3.2,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683082","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":"Targeting and bioimaging of human lung cancer cells via Heteroleptic iridium complexes","authors":"Özlem Altsoy ,&nbsp;Özlem Biçen Ünlüer ,&nbsp;Filiz Yilmaz ,&nbsp;Sibel Emir Diltemiz ,&nbsp;Deniz Hür ,&nbsp;Arzu Ersöz ,&nbsp;Ridvan Say","doi":"10.1016/j.ica.2025.123009","DOIUrl":"10.1016/j.ica.2025.123009","url":null,"abstract":"<div><div>Two bis-cyclometalated iridium complexes [Ir(ppyCF₃)₂(MAA)] (ppyCF₃: 2-(4-trifluoromethylphenyl)pyridine; MAA: methacryloylamino acid) have been synthesized and characterized by ¹H NMR, ¹³C NMR, ¹⁹F NMR, UV–Vis and FT-IR spectroscopy. The potential of the synthesized Ir(III) complexes as bioimaging agents was examined through their interaction with transferrin receptors in cells. The iridium complexes were attached to the transferrin protein via electron transfer using the tyrosine or tryptophan groups in the MAA ligand. This interaction enhances intracellular targeting and imaging efficiency, thereby expanding the potential applications of Ir(III) complexes in biological systems. In our study, we obtained two different types of biomaterials by interacting Ir(III) complexes with transferrin. The first type is iridium-transferrin cross-linked conjugates (Ir-Tf), and the second type is nano-structured iridium-transferrin cross-linked polymers (nanoIr-Tf). Our findings demonstrate that [Ir(ppyCF₃)₂(MATyr)]-Tf and nano[Ir(ppyCF₃)₂(MATyr)]-Tf show promise as efficient bioimaging agents. When interacting with both cancerous and normal lung cells, these complexes displayed robust fluorescence emission, enabling precise imaging and visualization. Notably, the complexes selectively localized within the cytoplasm of cancer cells, highlighting their potential for targeted imaging.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"592 ","pages":"Article 123009"},"PeriodicalIF":3.2,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645727","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":"Pyrazolylimine complexes Ni(II) – Precatalysts for the synthesis branched polyethylene","authors":"Daniele Saracheno ,&nbsp;Anton O. Vikhrov ,&nbsp;Roman V. Rassokhin ,&nbsp;Vladislav A. Tuskaev ,&nbsp;Svetlana Ch. Gagieva ,&nbsp;Svetlana A. Aksenova-Soloveva ,&nbsp;Mikhail I. Buzin ,&nbsp;Boris M. Bulychev","doi":"10.1016/j.ica.2025.123002","DOIUrl":"10.1016/j.ica.2025.123002","url":null,"abstract":"<div><div>Seven new and one previously described pyrazolylimine complex NiBr₂ with aryl substituents exhibiting different electronic effects on the imine carbon atom were synthesized and characterized. It was shown that the obtained compounds are effective catalysts for ethylene polymerization in the presence of diethylaluminum chloride (DEAC).</div><div>The influence of the electronic properties of the R substituents on the catalytic performance of the complexes was systematically investigated. A clear correlation between ligand electron-donating or -withdrawing character and both polymer molecular weight and catalytic activity was observed, providing insight into the electronic factors governing the efficiency of these nickel-based systems.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"592 ","pages":"Article 123002"},"PeriodicalIF":3.2,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683084","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":"Cyclopentadienyl Ir(III) complexes as photosensitizers for antibacterial photodynamic therapy: experimental and computational insights","authors":"Arif Ali Mandal ,&nbsp;Saurav Kumar ,&nbsp;Apurba Mandal ,&nbsp;Prodyut Dhar ,&nbsp;Samya Banerjee","doi":"10.1016/j.ica.2025.123003","DOIUrl":"10.1016/j.ica.2025.123003","url":null,"abstract":"<div><div>Bacterial infections are one of the serious global health concerns; new strategies to prevent bacterial infections are urgently needed. Light-responsive metal-based drugs can combat bacterial infections. Herein, we report three half-sandwich organoiridium(III)-based complexes <em>viz.</em>, [(Cp*)Ir(phen)Cl]PF₆ (<strong>Ir1</strong>), [(Cp*)Ir(phen-NO₂)Cl]PF₆ (<strong>Ir2</strong>), and [(Cp*)Ir(phen-NH₂)Cl)]PF₆ (<strong>Ir3</strong>) (where cyclopentadienyl = Cp*, 1,10 phenanthroline = phen, 5-nitro-1,10-phenanthroline = phen-NO₂, 5-amino-1,10-phenanthroline = phen-NH₂). The X-ray crystal structure of <strong>Ir3</strong> revealed a half-sandwich pseudo-octahedral geometry of the complexes. An absorption band at the <em>ca.</em> 325–400 nm region and photostability supported the potential application of <strong>Ir1</strong>-<strong>Ir3</strong> in antibacterial photodynamic therapy. Photophysical studies revealed that <strong>Ir1</strong>-<strong>Ir3</strong> generated singlet oxygen (¹O₂) (Φ_Δ = 0.14–0.11) and photo-catalytically oxidize NADH (TOF = 48.3 ± 3.2 to 54.3 ± 4.2 h⁻¹). DFT/TD-DFT studies revealed that <strong>Ir1-Ir3</strong> efficiently generate singlet oxygen <em>via</em> the type II pathway. Moreover, <strong>Ir2</strong> showed the highest efficacy as compared to <strong>Ir1</strong> and <strong>Ir3</strong> against both <em>Escherichia coli</em> (Gram-(−)) and <em>Staphylococcus aureus</em> (Gram-(+)) bacteria with MIC values of 0.5 μg/mL upon visible light (400–700 nm, 10 J cm⁻²) exposure. Notably, <strong>Ir1</strong>-<strong>Ir3</strong> showed no bacterial inhibition activity under dark conditions. Additionally, molecular docking studies were performed against DNA gyrase B (PDB ID: <span><span>4uro</span><svg><path></path></svg></span>), PBP2a (PDB ID: <span><span>4CJN</span><svg><path></path></svg></span>) protein, and FabH (PDB ID: <span><span>1EBL</span><svg><path></path></svg></span>) protein to elucidate the binding modes of <strong>Ir1</strong>-<strong>Ir3</strong> within the active sites, revealing crucial interactions that showed their significant activity against bacteria. Overall, in this work, we have demonstrated the promising potential of Ir(III) complexes as effective antibacterial agents under the influence of visible light.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"591 ","pages":"Article 123003"},"PeriodicalIF":3.2,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621632","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":"Iron based metal–organic frameworks MIL-53 (Fe): A comprehensive review on advanced synthesis strategies and photocatalytic energy & environmental applications","authors":"Ugrabadi Sahoo ,&nbsp;Samarjit Pattnayak ,&nbsp;Shubhalaxmi Choudhury ,&nbsp;Pragnyashree Aparajita ,&nbsp;Sandip Padhiari ,&nbsp;Garudadhwaj Hota","doi":"10.1016/j.ica.2025.123001","DOIUrl":"10.1016/j.ica.2025.123001","url":null,"abstract":"<div><div>Metal–organic frameworks (MOFs) have transfigured the landscape of advanced materials, with MIL-53 (Fe) a flexible, porous structure comprising iron salts and terephthalic acidemerging as a standout candidate for next-generation applications. Renowned for its “breathing” behavior and tunable structural properties, MIL-53 (Fe) has demonstrated exceptional potential in both adsorption and photocatalysis. Early research focused on developing crystalline MOFs with optimal surface areas and porosity using diverse metal-linker combinations, but current efforts are shifting toward innovative synthesis routes and exploring their versatile functionalities. This review critically examines the state-of-the-art strategies for MIL-53 (Fe) synthesis, such as electrochemical, solvothermal, and microwave-assisted methods, evaluating their effectiveness and limitations. We emphasize the unique optoelectronic properties, high chemical stability, and adjustable band gap of MIL-53 (Fe), which collectively confer superior photocatalytic effectiveness in processes like oxygen evolution, hydrogen production, and visible-light-driven pollutant degradation. By synthesizing recent advancements, we address pivotal design considerations, discuss the impact of structural modifications, and elucidate the fundamental factors influencing MIL-53 (Fe) photoactivity. Special emphasis is placed on environmental remediation and sustainable energy applications. Future research directions are proposed, including novel functionalization strategies and heterojunction fabrication, to supplementary enhance the photocatalytic activity of MIL-53 (Fe)-based materials. This comprehensive review aims to serve as a valuable guide for researchers, fostering the continued development and application of MIL-53 (Fe) MOFs in the pursuit of greener, more sustainable technologies.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"591 ","pages":"Article 123001"},"PeriodicalIF":3.2,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621630","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, Structural Characterization and Biological Activity of Mn(II) and Cr(III) Complexes with a 3-(3,4-dichlorobenzenyl)-1-(4-((2-hydroxybenzylidene)amino)benzenyl)-2-propen-1-one schiff base ligand: Unraveling Electronic Factors of Bioactivity","authors":"Antar A. Abdelhamid ,&nbsp;Majidah Alsaeedi ,&nbsp;Anas Alfarsi ,&nbsp;Manal M. Alzahrani ,&nbsp;Obaid A. Alharbi ,&nbsp;Mansour Alsarrani ,&nbsp;Raafat A. El-Eisawy ,&nbsp;Abdullah Ahmed A. Alghamdi ,&nbsp;Aly Abdou","doi":"10.1016/j.ica.2025.122989","DOIUrl":"10.1016/j.ica.2025.122989","url":null,"abstract":"<div><div>The bidentate Schiff base ligand RC, synthesized through sequential condensation of p-aminoacetophenone with 3,4-dichlorobenzaldehyde followed by salicylaldehyde, coordinates to Mn(II) and Cr(III) ions to form neutral octahedral complexes [Mn(RC)₂(H₂O)₂] and [Cr(RC)₂(H₂O)(Cl)]. Comprehensive characterization confirms their structures and 1:2 metal:ligand stoichiometry. Molar conductivity (8.68–8.77 μS cm² mol⁻¹) confirms non-electrolytic behavior. IR spectroscopy reveals coordination via phenolic oxygen (<em>ν</em>(OH) shift to 3461–3466 cm⁻¹) and azomethine nitrogen (ν(C=N) shift to 1613–1616 cm⁻¹), with new M–O/N bands (508–528 cm⁻¹). UV–Vis spectra and magnetic moments (μ_eff = 1.81 B.M. for MnRC; 3.74 B.M. for CrRC) support octahedral geometry, with MnRC adopting a low-spin d⁵ configuration. Mass spectrometry (<em>m</em>/<em>z</em> 883.241 for MnRC; 893.775 for CrRC) and elemental analysis validate molecular integrity. DFT calculations highlight MnRC's superior reactivity: smallest HOMO-LUMO gap (2.36 eV), highest softness (0.42 eV⁻¹), and strongest electrophilicity (7.02 eV). Antimicrobial assays show MnRC &gt; CrRC &gt; RC in potency, with inhibition zones up to 20 mm and activity ≤85 %. Molecular docking corroborates enhanced bioactivity, with MnRC exhibiting the highest binding affinity (−8.60 kcal/mol) against <em>S. aureus</em> TyrRS via H-bonding, electrostatic, and hydrophobic interactions.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"591 ","pages":"Article 122989"},"PeriodicalIF":3.2,"publicationDate":"2025-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578050","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":"Preparation, crystal structures and photophysical properties of two green upconversion photoluminescence holmium mercury complexes","authors":"Hao-Dong Liu,&nbsp;Long-Hua Zeng,&nbsp;Xi-Yu Shao,&nbsp;Cheng Liu,&nbsp;Wen-Tong Chen","doi":"10.1016/j.ica.2025.122975","DOIUrl":"10.1016/j.ica.2025.122975","url":null,"abstract":"<div><div>Two novel holmium mercury isonicotinic acid/nicotinic acid materials, [Ho(HIA)₃(H₂O)₂]_2<em>n</em>·3<em>n</em>(HgBr₄)·4<em>n</em>H₂O (<strong>1</strong>) (HIA = isonicotinic acid) and [Ho(HNA)₃(H₂O)₂]_2<em>n</em>·3<em>n</em>(HgCl₄)·4<em>n</em>H₂O (<strong>2</strong>) (HNA = nicotinic acid), were obtained through hydrothermal reactions, and their structural features were analyzed by single – crystal X – ray diffraction. Both of these complexes display a one – dimensional (1 – D) chain – like framework. The lanthanide ions within them are in eight – coordination configurations, and the mercury ions are in four – coordination patterns. Semiconductor bandgaps were ascertained from solid-state UV/Vis diffuse reflectance measurements, yielding values of 3.21 eV for complex <strong>1</strong> and 2.98 eV for complex <strong>2</strong>. Solid-state sample-based photoluminescence investigations indicate that both complexes produce green upconverting photoluminescence. The underlying cause of this photoluminescence is the characteristic emission due to the 4f electron intrashell transition (⁵<em>S</em>₂ → ⁵<em>I</em>₈) in Ho³⁺ ions existing in both complexes. The Commission Internationale de l'Éclairage (CIE) color space positions compounds <strong>1</strong> and <strong>2</strong> at (0.6679, 0.3318) and (0.2446, 0.7376), with associated correlated color temperatures measured as 6497 K and 6814 K.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"590 ","pages":"Article 122975"},"PeriodicalIF":3.2,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145525956","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-(4-Nitrophenyl)-4,5-diphenyl-1H-imidazole based selective and sensitive chemosensor for fluorescent colorimetric detection of Fe3+ and colorimetric detection of S2− ions","authors":"Devanand Sahu ,&nbsp;Rajat Kumar Roy ,&nbsp;Abhilash Pandey ,&nbsp;Srishti Dutta ,&nbsp;Meman Sahu ,&nbsp;Uttam Kumar Das ,&nbsp;Annpurna Sahu ,&nbsp;Dharmendra Kumar Parihar ,&nbsp;Goutam Kumar Patra","doi":"10.1016/j.ica.2025.122988","DOIUrl":"10.1016/j.ica.2025.122988","url":null,"abstract":"<div><div>Here in, we describe the synthesis, characterisation and properties of optical sensing of 2-(4-Nitrophenyl)-4,5-diphenyl 1<em>H</em>-imidazole (<strong>L</strong>). While <strong>L</strong> showed a discernible color change from light yellow to orange and change in UV–Vis absorption spectra on the addition of S²⁻, across the wide range of tested anions, it also showed a selective sensitivity towards the Fe³⁺ ion over other tested metal ions through an emission quenching effect and a change in UV–Vis absorption spectra. Fe³⁺ has a fluorometric detection limit of 4.7 × 10⁻⁷ M, whereas S²⁻ and Fe³⁺ have absorption detection limits of 2.3 × 10⁻⁸ M and 5.8 × 10⁻⁶ M, respectively. Compared to the WHO drinking water guidelines, these readings were substantially lower. A 1:1 stoichiometric complexation between <strong>L</strong> and Fe³⁺ and a 2:1 stoichiometric complexation between <strong>L</strong> and S²⁻ (deprotonation from the –NH site of the receptor <strong>L</strong>) have been established using the Job's plot analysis, the ESI-MS spectra, and the ¹H NMR data. The detection of Fe³⁺ and S²⁻ ions in real samples, logic gate design, colorimetric test kit tests, and the preparation of antimicrobial agents can all benefit from the usage of <strong>L</strong>.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"591 ","pages":"Article 122988"},"PeriodicalIF":3.2,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145500416","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 structures of Eu(II) complexes with anionic perfluoro-2-mercaptobenzothiazolate and macrocyclic ligands","authors":"Anton N. Ostrosablin ,&nbsp;Vasily A. Ilichev ,&nbsp;Anton F. Rogozhin ,&nbsp;Olga V. Kuznetsova ,&nbsp;Pavel V. Dorovatovskii ,&nbsp;Roman V. Rumyantcev ,&nbsp;Georgy K. Fukin ,&nbsp;Mikhail N. Bochkarev","doi":"10.1016/j.ica.2025.122987","DOIUrl":"10.1016/j.ica.2025.122987","url":null,"abstract":"<div><div>Complexes of divalent europium with perfluoro-2-mercaptobenzothiazolate (mbt^F) and a set of macrocyclic ligands - 18-dbc-6, 18-crown-6, [2.2]cryptand and [2.2.2]cryptand, were synthesized. Accordingly X-ray data, applying of 18-dbc-6 yields complex <strong>1</strong> with a composition Eu(mbt^F)₂(18-dbc-6) in which 18-dbc-6 acts as hexadentate ligand and one of mbt^F ligands is chelately coordinated, while the other exhibits monodentate coordination via the thiolate sulfur. In complexes with 18-crown-6 and [2.2]cryptand macrocyclic ligands with general formulas Eu(mbt^F)₂(18-crown-6) (<strong>2</strong>) and Eu(mbt^F)₂([2.2]cryptand) (<strong>3</strong>), respectively, show similar hexadentate coordination of macrocyclic ligands but only monodentate coordination mode of mbt^F ligands to europium. Additionally, the molecular structure of complex <strong>3</strong> is stabilized by intramolecular N-H…N interactions of [2.2]cryptand and mbt^F ligands. A complex with [2.2.2]cryptand ligand of a composition Eu(mbt^F)₂([2.2.2]cryptand) (<strong>4</strong>) does not give crystals, however it reacts with copper(I) iodide yielding a highly luminescent europium diiodide [EuI([2.2.2]cryptand)]I (<strong>5</strong>) which contains a complex cation [EuI([2.2.2]cryptand)]⁺ where the macrocyclic ligand exhibits octadentate coordination mode.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"590 ","pages":"Article 122987"},"PeriodicalIF":3.2,"publicationDate":"2025-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145463714","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}