Vuyokazi Nobatana, James Oyim, Nnamdi Nwahara, Azole Sindelo, Tebello Nyokong
{"title":"The photodynamic anti-cancer and anti-bacterial behaviour of meso-substituted trans-A2B2 porphyrin conjugated silica‑gold nanoparticles","authors":"Vuyokazi Nobatana, James Oyim, Nnamdi Nwahara, Azole Sindelo, Tebello Nyokong","doi":"10.1016/j.ica.2025.122584","DOIUrl":"10.1016/j.ica.2025.122584","url":null,"abstract":"<div><div>The synthesis and characterization of 5,15-bis(4-(methylthio) phenyl)-10,20-di(pyridine-4-yl) porphyrin (<strong>1</strong>) and its zinc(II) derivative (<strong>2</strong>) are reported along with their gold-coated silica nanoparticle (AuSiO<sub>2</sub>) conjugates. The heavy atom effect of the zinc(II) ion resulted in complex <strong>2</strong> having high singlet oxygen quantum yields. Upon conjugation of complex <strong>1</strong> and <strong>2</strong> to AuSiO<sub>2</sub> NPs the triplet lifetimes decreased, while the singlet oxygen quantum yields increased due to an external heavy atom effect. The photodynamic therapy (PDT) activity of all the complexes was determined against MDA-MB-231 cells, and all the porphyrin complexes exhibit a relatively low in vitro dark cytotoxicity percentage cell viability of >77 %. Both <strong>1</strong>-AuSiO<sub>2</sub> and <strong>2</strong>-AuSiO<sub>2</sub> conjugates display more favourable PDT activity properties upon illumination with a Thorlabs 625 nm light-emitting diode (288 J cm<sup>-2</sup>) for 30 min against MDA-MB-321 cancer cells. In a similar manner, the conjugates were found to also have significantly higher photodynamic antimicrobial activity (aPDT) against planktonic Gram-(+) cells of methicillin-sensitive <em>Staphylococcus aureus</em> (MSSA) as compared to methicillin-resistant <em>Staphylococcus aureus</em> (MRSA). The observed enhancements in the PDT and aPDT activity of <strong>1</strong>-AuSiO<sub>2</sub> and <strong>2</strong>-AuSiO<sub>2</sub> could be attributed to the high singlet oxygen generated by the nanoconjugates compared to the porphyrin complexes alone.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122584"},"PeriodicalIF":2.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guiling Gao , Yiming Ren , Lei Wang , Xuanqi Zhang , Xiaoyong Lai , Qin Hou , Yi Li , Zhiyong Teng , Xiaozhong Wang , Qingfeng Yang
{"title":"Two new 2D coordination polymers as a fluorescence “turn-on” probe for highly selective and sensitive detection of Sparfloxacin","authors":"Guiling Gao , Yiming Ren , Lei Wang , Xuanqi Zhang , Xiaoyong Lai , Qin Hou , Yi Li , Zhiyong Teng , Xiaozhong Wang , Qingfeng Yang","doi":"10.1016/j.ica.2025.122565","DOIUrl":"10.1016/j.ica.2025.122565","url":null,"abstract":"<div><div>High selectivity detection and fast response for Sparfloxacin (Spa) is always a challenge. In this paper, two new coordination polymers [InCl(PPA)(H<sub>2</sub>O)]<sub>n</sub>·nH<sub>2</sub>O (<strong>1</strong>) and [La(PPA)(ox)<sub>1/2</sub>(H<sub>2</sub>O)]<sub>n</sub> (<strong>2</strong>). (H<sub>2</sub>PPA = 3-(pyridin-3-yloxy)phthalic acid, H<sub>2</sub>ox = oxalic acid) were synthesized by hydrothermal method and analyzed in depth by X-ray single crystal diffraction, elemental analysis, IR spectroscopy, PXRD and thermogravimetric analysis. Both compounds <strong>1</strong> and <strong>2</strong> display 2D layered structures. Notably, these two compounds behave as fluorescent sensors toward Spa with high sensitivity, selectivity with low detection limits of 18.16 and 48.17 nM, respectively. The present work investigated the mechanism of fluorescence enhancement by Spa for both compounds, which may be the result of the interaction between Spa and ligand. It is worth noting that for the first time, the coordination polymer was established to detect Spa by fluorescence sensing method.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122565"},"PeriodicalIF":2.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372340","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}
Peishan Huang , Wenhui Deng , Qiong Wu , Wanwan Hong , Jing Liu , Jiangbo Liang , Bin Zhao , Wenjie Mei
{"title":"Ruthenium(II) complexes synthesized as potential inducers of conformation inversion of AS1411 G4 DNA","authors":"Peishan Huang , Wenhui Deng , Qiong Wu , Wanwan Hong , Jing Liu , Jiangbo Liang , Bin Zhao , Wenjie Mei","doi":"10.1016/j.ica.2025.122585","DOIUrl":"10.1016/j.ica.2025.122585","url":null,"abstract":"<div><div>Herein, four ruthenium(II) complexes, [Ru(L)<sub>2</sub>(PEIP)(CH<sub>2</sub>)<sub>4</sub>Br)](ClO<sub>4</sub>)<sub>2</sub> (L = phen, <strong>1</strong>; bpy, <strong>2</strong>, PEIP = 2-(2-phenyl-ethenyl)-1<em>H</em>-imidazole-[4,5<em>f</em>][1,10]phenanthroline) and [Ru(L)<sub>2</sub>(PEIP)(CH<sub>2</sub>)<sub>4</sub>Erianin)](ClO<sub>4</sub>)<sub>2</sub> (L = phen, <strong>1E</strong>; bpy, <strong>2E</strong>) have been synthesized and investigated as promising inducer to promote conformation inversion of AS1411 G4 DNA. All of these complexes can bind and stabilize AS1411 G4 DNA. Subsequent investigations reveal that in the presence of 1 and 1E, the described circular dichroism signal of AS1411 G4 DNA was reversed. Furthermore, it is discovered that in the presence of 1 and 1E, AS1411 G4 DNA can condense to a somewhat loose nano-network. Moreover, the analysis using molecular docking demonstrates that the conformation inversion of AS1411 G4 DNA is largely dependent on the binding sites of 1 and 1E. In conclusion, these complexes will be used for tumor diagnostics in the clinical context because of their capacity to stably bind AS1411 G4 DNA and dramatically boost its fluorescence emission. Besides, these complexes show promise as inducers of AS1411 G4 DNA conformational inversion.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122585"},"PeriodicalIF":2.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394557","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":"Poly(vinylsilsesquioxanes) of ladder structure – Synthesis, modification and applications","authors":"Anna Kowalewska, Kamila Majewska-Smolarek","doi":"10.1016/j.ica.2025.122581","DOIUrl":"10.1016/j.ica.2025.122581","url":null,"abstract":"<div><div>The well-defined arrangement of siloxane bonds in double-stranded linear polysilsesquioxanes (LPSQ) increases macromolecular rigidity and ensures the regular distribution of functional substituents along the polymer chain. These characteristics of hybrid LPSQ are their most valuable features, contributing to their unique properties and thermochemical stability.</div><div>This review summarizes synthetic methods for preparing linear polysilsesquioxanes through the preorganization of monomeric units via supramolecular interactions or the use of specific monomers, with particular emphasis on the synthesis and functionalization of poly(vinylsilsesquioxanes) (LPSQ-Vi). The properties of polymers derived from LPSQ-Vi reflect their unique structural features, making them versatile precursors for new hybrid materials in surface engineering, polymer composite modification, and optoelectronics.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122581"},"PeriodicalIF":2.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421898","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":"Two ligands-based europium luminescent coordination polymer, Eu2(PZDC)(PDC)2(H2O)6","authors":"Lowik Dewez--Raszka , Sanae Hommada , Yan Suffren , Nathalie Audebrand","doi":"10.1016/j.ica.2025.122583","DOIUrl":"10.1016/j.ica.2025.122583","url":null,"abstract":"<div><div>The title compound, europium pyrazine- and pyridine-dicarboxylate hexahydrate, Eu<sub>2</sub>(C<sub>6</sub>H<sub>2</sub>N<sub>2</sub>O<sub>4</sub>)(C<sub>7</sub>H<sub>3</sub>NO<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>, has been synthesized from hydrothermal route. Its crystal structure has been determined from single-crystal X-ray diffraction. The coordination compound is built from tetramers of Eu and pyridine ligands that are linked by pyrazine ligands. These entities form layers that are pillared through hydrogen bonds. The compound possesses a bright red emission due to Eu<sup>3+</sup> cation even in the presence of vibrators such as water molecules.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122583"},"PeriodicalIF":2.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387991","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}
S. Dhanapal , F. Riyazur Rahman , R. Veerasamy , A. Kosiha , D. Sabarinathan , G. Kalaiarasi
{"title":"A chemosensing approach for the detection of Cu2+ ion using benzothiazole based probe and its applications in anticancer studies","authors":"S. Dhanapal , F. Riyazur Rahman , R. Veerasamy , A. Kosiha , D. Sabarinathan , G. Kalaiarasi","doi":"10.1016/j.ica.2025.122582","DOIUrl":"10.1016/j.ica.2025.122582","url":null,"abstract":"<div><div>The current research work describes the design and synthesis of a novel chemosensor</div><div>(2-(benzo[<em>d</em>]thiazol-2-yl)-6-(((4-bromophenyl)imino)methyl)phenol) (<strong>HBPA</strong>) for the detection of metal ions. Formation of the probe (<strong>HBPA</strong>) was confirmed by using various spectroscopic techniques. The sensing ability of <strong>HBPA</strong> with various metal ions were examined by colorimetric and fluorimetric techniques and the obtained results confirmed the selective detection of Cu<sup>2+</sup> ions by the probe with the limit of detection of 2.0300 × 10<sup>−4</sup> M. The probe exhibited good binding constant with the Cu<sup>2+</sup> ion as 3.6957 ± 0.33 × 10<sup>4</sup> M<sup>−1</sup>. Spectral results revealed 1:2 stoichiometry in the complex <strong>HBPA-Cu</strong><sup><strong>2+</strong></sup> during interaction between metal and probe. Experimental observations on binding of the probe with copper ions was corroborated with density functional theory (DFT). Further, the cytotoxic nature of the probe and probe-Cu<sup>2+</sup> have been examined with HeLa (human cervical cancer cells) and HepG2 (human liver cancer cells) and the obtained results revealed that the compounds possessed good cytotoxic activity compared with the positive control doxorubicin. <strong>HBPA</strong> acts as a good chemosensor for the detection of Cu<sup>2+</sup> ion as well as exhibits good cytotoxic activity towards the HepG2 and HeLa cell lines.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122582"},"PeriodicalIF":2.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376716","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}
Nerea Soto-Durán, David Gallego-García, Maria Talavera, Sandra Bolaño
{"title":"Effect of phosphane ligands in the nucleophilic additions at iridium allenylidene complexes","authors":"Nerea Soto-Durán, David Gallego-García, Maria Talavera, Sandra Bolaño","doi":"10.1016/j.ica.2025.122577","DOIUrl":"10.1016/j.ica.2025.122577","url":null,"abstract":"<div><div>The reactivity of allenylidene complexes towards nucleophilic additions has been deeply investigated in ruthenium complexes, however, studies involving iridium complexes are scarce. Thus, several acetonitrile complexes have been synthesized as precursors for the <em>in situ</em> nucleophilic additions of phosphanes and amines at non-isolated allenylidene complexes of formula [IrCp*Cl(=C=C=CPh<sub>2</sub>)(L)]PF<sub>6</sub> (L = PMe<sub>3</sub>, P(OMe)<sub>3,</sub> PPh<sub>2</sub>(OMe), PPh<sub>2</sub>Me, PCy<sub>3</sub>, P(3,5-C<sub>6</sub>H<sub>3</sub>(CF<sub>3</sub>)<sub>2</sub>)<sub>3</sub>). Therefore, addition of phosphanes as nucleophiles provided different ratios of the allenyl [IrCp*Cl{C(PR<sub>3</sub>)=C=CPh<sub>2</sub>}(L)]PF<sub>6</sub> (<strong>4·R</strong>) and alkynyl complexes [IrCp*Cl{C≡C–CPh<sub>2</sub>(PR<sub>3</sub>)}(L)]PF<sub>6</sub> (<strong>5·R</strong>) (R = Ph, OMe, Me) depending on the phosphane used as nucleophile and the one bonded to the metal center. The regioselectivity mainly arose from steric demand instead of the electronic effect of the phosphanes. The addition of amines led, in most cases, to the first substituted aminocarbene complexes [IrCp*Cl{=C(NRR')–CH=CPh<sub>2</sub>}(L)]PF<sub>6</sub> (R = H, R' = Et (<strong>6</strong>); R = R' = Et (<strong>7</strong>)) with the {IrCp*Cl(PR<sub>3</sub>)<sup>+</sup>} fragment; however, using a bulky phosphane such as PCy<sub>3</sub>, formation of a second product was observed, probably an iridanaphthalene derivative [IrCp*{κ<sup>2</sup><em>C,C</em>-{=C(NRR')–CH=CPh<sub>2</sub>}(PCy<sub>3</sub>)]PF<sub>6</sub> (R = H, R' = Et (<strong>8</strong>); R = R' = Et (<strong>9</strong>)).</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122577"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376714","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}
Kaihang Zhou , Qin Qin , Gaigai Duan , Qiliang Fu , Haoqi Yang , Xiaoshuai Han , Chunmei Zhang , Shuijian He , Shaohua Jiang
{"title":"Preparation, modification and applications of sepiolite nanofibers: A review","authors":"Kaihang Zhou , Qin Qin , Gaigai Duan , Qiliang Fu , Haoqi Yang , Xiaoshuai Han , Chunmei Zhang , Shuijian He , Shaohua Jiang","doi":"10.1016/j.ica.2025.122567","DOIUrl":"10.1016/j.ica.2025.122567","url":null,"abstract":"<div><div>In recent years, the ongoing advancement of nanotechnology has facilitated the extensive application of natural mineral materials across various fields. Among these natural minerals, sepiolite fibers, a fibrous hydrated magnesium silicate, exhibit remarkable properties, including exceptional adsorption capacity, thermal stability, rheological characteristics, and biocompatibility. To optimize the utilization of the inherent characteristics of sepiolite fibers, numerous researchers have integrated nanotechnology with sepiolite fibers, conducting extensive and multifaceted investigations. Given the rapid increase in research interest in this topic over the past few years, this paper provides a selective review of the preparation, modification methods, and applications of sepiolite nanofibers. Notably, in addition to traditional preparation techniques, innovative and superior methods such as microwave- hydrogen peroxide method and high-speed airflow techniques are also discussed. Following appropriate modifications, the hydrophobicity, mechanical properties, and load-bearing capacity of sepiolite nanofibers have been significantly enhanced, and their compatibility with polymers has markedly improved, leading to widespread applications in catalysis, adsorption, flame retardancy, rheological thickening, humidity control, and biomedicine.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122567"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143303376","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}
Fatma A. Kılıçarslan , Ali Erdoğmuş , Elif Bilgen , Atıf Koca
{"title":"Synthesis, characterization, electrochemistry and spectroelectrochemistry of new non-peripherally hexyl benzoate substituted CoII, CuII, MnIII(Cl) phthalocyanines","authors":"Fatma A. Kılıçarslan , Ali Erdoğmuş , Elif Bilgen , Atıf Koca","doi":"10.1016/j.ica.2025.122580","DOIUrl":"10.1016/j.ica.2025.122580","url":null,"abstract":"<div><div>Metallo phthalocyanines (MPcs) non-peripherally substituted with hexyl benzoate and bearing Co<sup>2+</sup>, Cu<sup>2+</sup>, Mn<sup>3+</sup>(Cl) metal centers, which are labeled as CuPc, CoPc, and MnPc respectively, were synthesized and then characterized with mass, UV–Vis, and FT-IR spectroscopy techniques. Then, the spectroelectrochemical and electrochemical characterizations of these complexes were carried out. The voltametric and spectroelectrochemical responses indicated that while phthalocyanine (Pc) bearing Cu<sup>2+</sup> (CuPc) illustrated only Pc-based electron transfer processes, metal-based redox reactions were observed for the CoPc and MnPc in addition to the Pc ring-based ones. While CoPc illustrated one metal based oxidation and one metal based reduction processes in addition to the phthalocyanine ring based electron transfer reactions, MnPc illustrated two metal based reductions and phthalocyanine ring based electron transfer reactions. Altering the solvent of the electrolyte (dimethyl sulfoxide and dichloromethane) influenced the redox characters of all complexes due to the coordination/noncoordinating of the solvents of the electrolyte to the metal center of the complexes, and coordination of the donor solvent dimethyl sulfoxide solvent to the metal center stabilized the high oxidation state of the cobalt center of CoPc. Electron transfer reactions of the complexes significantly influenced their spectral responses; thus, predominant spectral and color changes were observed during the spectroelectrochemical measurements.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"580 ","pages":"Article 122580"},"PeriodicalIF":2.7,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465400","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}
Musa A. Said , David L. Hughes , Nadjet Rezki , Mohamed R. Aouad , Clemens Lücke , Wolfgang Frey , Biprajit Sarkar
{"title":"Rare open zinc cluster of a novel multidentate Schiff base containing 1,2,3-triazole derivative: Stepwise synthesis, characterization, XRD, HSA, %Vbur, τ and CV studies","authors":"Musa A. Said , David L. Hughes , Nadjet Rezki , Mohamed R. Aouad , Clemens Lücke , Wolfgang Frey , Biprajit Sarkar","doi":"10.1016/j.ica.2025.122569","DOIUrl":"10.1016/j.ica.2025.122569","url":null,"abstract":"<div><div>A novel multidentate Schiff base ligand, N'4,N'5-bis((E)-3,5-di-tert-butyl-2-hydroxybenzylidene)-1-(2-(2-((E)-3,5-di-tert-butyl-2-hydroxybenzylidene)hydrazinyl)-2-oxoethyl)-1H-1,2,3-triazole-4,5-dicarbohydrazide (<strong>5</strong>), was successfully synthesized via an acid-catalyzed condensation reaction. The process involved reacting 1-(2-hydrazineyl-2-oxoethyl)-1H-1,2,3-triazole-4,5-dicarbohydrazide (<strong>4</strong>) with three equivalents of the appropriate aldehyde under traditional Schiff base conditions. The synthetic route began with the preparation of 1,2,3-triazole tris-ester (<strong>3</strong>) from diethyl acetylenedicarboxylate (<strong>1</strong>) and ethyl azidoacetate (<strong>2</strong>), employing a highly efficient solvent-free reaction that yielded 96 %. Subsequent hydrazinolysis of the tris-ester afforded the tris-acid hydrazide (<strong>4</strong>) in 92 % yield.</div><div>NMR spectroscopy confirmed the structure of the hydrazide with distinct NH<sub>2</sub> and NH protons resonating at 4.29–4.59 ppm and 8.79–9.39 ppm, respectively. Ligand 5, containing hydroxyl and nitrogen donor groups, was employed to synthesize binuclear zinc complexes with two independent zinc centers: Zn (Jos and Suja, 2023 (1)) displayed square pyramidal geometry, while Zn (Juyal et al., 2023 (2)) exhibited distorted octahedral geometry. The zinc complex crystallized in a triclinic system (<em>P</em><sub><em>−</em></sub><sub><em>1</em></sub> space group) and formed a dimer stabilized by hydrogen bonding, with a packing arrangement that featured a major void stabilized by a 10-member hydrogen-bonded ring system.</div><div>Hirshfeld surface analysis (HSA) and cyclic voltammetry (CV) were performed to understand the complex's physical and electrochemical properties. Using ChimeraX software, the percent buried volume (%Vbur) was calculated, providing insights into steric interactions between the ligand and the zinc coordination sites. This analysis was essential for optimizing ligand design, minimizing steric hindrance around the metal centre. The findings of this study could aid in advancing Schiff base ligands and zinc complexes for materials science applications, though additional research is required. The results highlight the critical role of steric hindrance, NH, OH, NCH<sub>2</sub>, NCH, ethanol solvents, and acetic acid groups attached to the zinc metal in influencing the structural and reactive properties of metal-ligand complexes, offering valuable insights into their behaviour within chemical systems.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"579 ","pages":"Article 122569"},"PeriodicalIF":2.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143303710","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}