{"title":"Synthesis, crystal structures and antimicrobial activity of dioxidomolybdenum(VI) complexes derived from aroylhydrazones.","authors":"Zhi-Tong Li, Xiao-Jie Wu, Qiong Wu, Yong-Peng Yu, Zhen Cong, Xin-Yu Min, Xin-Yi Du, Zhong-Lu You, Jian Jiang","doi":"10.17344/acsi.2026.9928","DOIUrl":"https://doi.org/10.17344/acsi.2026.9928","url":null,"abstract":"<p><p>Two new aroylhydrazone compounds (E)-N'-(3-ethoxy-2-hydroxybenzylidene)-3-(trifluoromethyl)benzohydrazide (H2La) and (E)-2-bromo-N'-(3,5-dichloro-2-hydroxybenzylidene)benzohydrazide (H2Lb) were prepared and characterized by 1H NMR spectroscopy. Reaction of the aroylhydrazones with MoO2(acac)2 afforded two new dioxidomolybdenum(VI) complexes with general formula [MoO2L(CH3OH)] (L = La for 1, Lb for 2). The complexes were characterized by IR and UV-Vis spectroscopy. Molecular structures of the aroylhydrazones and two dioxidomolybdenum(VI) complexes were further characterized by single crystal X-ray determination. The aroylhydrazone ligands coordinate to Mo through the phenolate oxygen, imine nitrogen, and enolate oxygen atom. The Mo atom displays a distorted octahedral geometry, with the three donors of the aroylhydrazone ligands and one oxo defining the equatorial plane, and one methanol and the other oxo occupying the axial positions. The effective antimicrobial activity of the compounds against the bacteria strains B. subtilis, S. aureus, E. coli, P. fluorescens and on the fungal strains C. albicans and A. niger was observed.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"596-603"},"PeriodicalIF":1.2,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Two cobalt(II) coordination compounds with 3-hydroxypyridine with thiocyanate or deprotonated bridging ligand, and comparison with isostructural analogs.","authors":"Nives Kitanovski","doi":"10.17344/acsi.2026.9956","DOIUrl":"https://doi.org/10.17344/acsi.2026.9956","url":null,"abstract":"<p><p>Two cobalt(II) coordination compounds with 3-hydroxypyridine, [Co(3-pyOH)4(NCS)2] (1) and [Co(3-pyOH)2(μ-3-pyO)2]n (2), were synthesised from aqueous solution and characterised by single-crystal X-ray diffraction, infrared spectroscopy, elemental analysis, and magnetic susceptibility measurements. Compound 1 is a discrete centrosymmetric complex in which the Co(II) ion adopts a slightly distorted octahedral N6 coordination environment formed by four neutral 3-pyOH ligands and two terminal N-bonded thiocyanate ligands. Compound 2 is a two-dimensional coordination polymer containing both neutral 3-pyOH and deprotonated μ-3-pyO- ligands, with the Co(II) ion in a distorted octahedral N2O4 donor environment. The crystal packing of both compounds is supported by hydrogen-bonding interactions and π-π stacking between pyridine rings. Hirshfeld surface analysis was used to evaluate the main close contacts contributing to the crystal packing. Infrared spectroscopy supports the structural assignments, particularly the presence of terminal N-bonded thiocyanate ligands in 1, while magnetic measurements indicate high-spin octahedral Co(II) centres in both compounds. The structures are compared with isostructural Ni(II), Mn(II) and Cd(II) coordination compounds.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"630-638"},"PeriodicalIF":1.2,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aleesha Aleesha, Saqib Khan, Kamran Mehdi, Safdar Ali, Jamshaid Ahmed, Harliansyah Harliansyah, Naseer Ahmed
{"title":"Nanostructured materials for therapeutic applications: Bimetallic doped CuO nanoparticles, synthesis, characterization, and evaluation of biological properties - A sustainable approach.","authors":"Aleesha Aleesha, Saqib Khan, Kamran Mehdi, Safdar Ali, Jamshaid Ahmed, Harliansyah Harliansyah, Naseer Ahmed","doi":"10.17344/acsi.2025.9588","DOIUrl":"https://doi.org/10.17344/acsi.2025.9588","url":null,"abstract":"<p><p>This study reports the green synthesis of pristine, single-doped, and Fe/Co co-doped CuO nanoparticles using Bryophyllum calycinum extract. Doping was applied as a strategy to modulate the physicochemical and biological properties of CuO NPs. The NPs were characterized by EDX, XRD, FTIR, SEM, and UV-Vis spectroscopy, confirming crystallinity with a monoclinic phase and dopant-induced changes in band gap and lattice vibrations. SEM showed rough, irregular morphology. Biological assays revealed that Fe/Co co-doped CuO NPs exhibited superior antimicrobial activity 33 mm against S. enterica, 35 mm against A. niger, enhanced antioxidant efficiency, and minimal cytotoxicity at lower concentrations 0.3 mg/mL, 9% haemolysis. These findings demonstrate that Fe/Co co-doped CuO NPs synthesized via this eco-friendly approach possess promising bio-medicinal potential.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"615-629"},"PeriodicalIF":1.2,"publicationDate":"2026-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"γ-aminobutyric acid type A receptors modulate neurosteroid binding to the voltage-dependent anion channel.","authors":"Natalia Akentieva","doi":"10.17344/acsi.2026.9831","DOIUrl":"https://doi.org/10.17344/acsi.2026.9831","url":null,"abstract":"<p><p>Neurosteroids modulate the function of γ-aminobutyric acid type A (GABAA) receptors in the brain. We showed that GABAA receptors modulate neurosteroid interactions with VDAC. GABA enhanced [3H]6-AziP labeling of VDAC in a concentration-dependent manner. This effect of GABA was prevented by the GABAA receptor antagonists gabazine and picrotoxin. Studies with brain tissue from mice deficient for VDAC showed that GABA enhanced [3H]6-AziP labeling of VDAC2 and VDAC1. GABA enhanced photolabeling of VDAC in HEK cells expressing γ2L-subunit, suggesting that the γ2L-subunit is required for the interaction of GABAA receptors with VDAC. VDAC1 and VDAC2 both co-immunoprecipitated with GABAA receptors in rat brain membranes. Collectively, the data provide evidence for a direct signaling pathway between the synaptic plasma membrane GABAA receptor and VDAC, a mitochondrial outer membrane protein.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"604-614"},"PeriodicalIF":1.2,"publicationDate":"2026-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis, cytotoxic evaluation, molecular docking, and DFT analysis of 1,3,4-thiadiazole-2,5-dithiol derivatives.","authors":"Mosa Alsehli","doi":"10.17344/acsi.2026.9888","DOIUrl":"https://doi.org/10.17344/acsi.2026.9888","url":null,"abstract":"<p><p>A new series of 1,3,4-thiadiazole-2,5-dithiol-based acetohydrazide derivatives 6a-f has been designed and synthesized via a multi-step procedure that includes esterification and condensation reactions. Target compounds 6a-f were synthesized using various substituted aryl aldehydes and hydrazide intermediate 3. FT-IR, 1H NMR and 13C NMR spectroscopy, and elemental analysis were used to characterize the synthesized compounds. The cytotoxic activity of the target compounds 6a-f against Caco-2 colorectal cells was evaluated at different concentrations using the MTT assay. The results showed that derivative 6a, which has a p-NO2 group on the phenyl ring, displayed good activity with an IC50 of 262.5 µg/mL. Molecular docking studies of compound 6a revealed a remarkable binding affinity towards HDAC1 and FGFR, with docking scores of -7.7 and -9.3 kcal/mol, respectively, facilitated by several hydrogen bonds and hydrophobic interactions. The DFT analysis revealed a high energy gap (9.882 eV), indicating good electronic stability, moderate electrophilicity, and significant molecular polarity, suggesting a favorable interaction potential in biological settings. Additionally, the drug-likeness and ADMET properties of the lead compound were predicted to be favorable based on in silico drug-likeness and ADMET evaluations.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"584-595"},"PeriodicalIF":1.2,"publicationDate":"2026-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang-Lei Li, En-Jun Zhang, Can Luo, Hui-Lin Zhou, Yao-Yao Cao, Da-Hua Shi, Zhong-Lu You
{"title":"Solvent influenced synthesis, crystal structures and urease inhibition of copper(II) complexes derived from 2-hydroxy-3-methoxybenzaldehyde thiosemicarbazone.","authors":"Yang-Lei Li, En-Jun Zhang, Can Luo, Hui-Lin Zhou, Yao-Yao Cao, Da-Hua Shi, Zhong-Lu You","doi":"10.17344/acsi.2026.9881","DOIUrl":"https://doi.org/10.17344/acsi.2026.9881","url":null,"abstract":"<p><p>Thiosemicarbazones have broad biological activities and play important role in coordination chemistry. In this work, three new copper(II) complexes, [Cu2LCl(µ-Cl)(EtOH)2]Cl (1), [CuL(OH2)]NO3·H2O (2), and [CuL(EtOH)]NO3·EtOH (3), where L is the deprotonated form of 2-hydroxy-3-methoxybenzaldehyde thiosemicarbazone (HL), were prepared and characterized by physico-chemical methods. Crystal structures of the complexes are further confirmed by single crystal X-ray determination. Complex 1 has a dinuclear copper(II) structure, and complexes 2 and 3 have mononuclear copper(II) structures. Inhibitory effect of the complexes on Jack bean urease was assayed. The complexes have remarkable activity with IC50 values of 0.3-1.1 μmol L-1.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"576-583"},"PeriodicalIF":1.2,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David Lukić, Vid Kavaš, Martina Hrast Rambaher, Stanislav Gobec
{"title":"Screening of deprotection conditions of TBDMS protecting group on β-lactams.","authors":"David Lukić, Vid Kavaš, Martina Hrast Rambaher, Stanislav Gobec","doi":"10.17344/acsi.2026.9857","DOIUrl":"https://doi.org/10.17344/acsi.2026.9857","url":null,"abstract":"<p><p>Monocyclic β-lactams are valuable scaffolds for the development of novel antibacterial agents, and synthetic flexibility at the C3 position of the β-lactam ring is of particular interest. In this study, we evaluated multiple procedures for the deprotection of the tert‑butyldimethylsilyl (TBDMS) group in model azetidinone derivatives to enable early-stage functionalization of the C3 hydroxyl group. Given the sensitivity of the strained β-lactam ring and the presence of additional labile functionalities, careful selection of reaction conditions was required. Two optimized deprotection protocols were identified that successfully afforded the corresponding free alcohols, even in the presence of an acid- and base-sensitive dithiocarbamate moiety. In contrast, several literature-reported procedures proved ineffective under the tested conditions. Although the isolated yields were modest, the results demonstrate the feasibility of selective TBDMS removal in structurally complex monocyclic β-lactam systems. These findings establish a foundation for further optimization and provide a basis for expanding C3 functionalization strategies in the synthesis of novel β-lactam derivatives.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"554-559"},"PeriodicalIF":1.2,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanistic explanations in teacher education: Characterization of science teacher candidates' levels of mechanistic reasoning regarding fundamental chemistry concepts.","authors":"Mehmet Polat","doi":"10.17344/acsi.2026.9860","DOIUrl":"https://doi.org/10.17344/acsi.2026.9860","url":null,"abstract":"<p><p>A mechanistic explanation is central to scientific inquiry; however, learners often struggle to link macroscopic observations with submicroscopic interactions. This study investigated the mechanistic reasoning of 218 preservice science teachers (PSTs), enrolled in the second, third, or fourth year at a public university in eastern Türkiye, regarding boiling point elevation. Data were collected in a 60-minute session using a hypothetical scenario-based open-ended form requiring written explanations and visual representations, including drawings, particulate depictions, and causal arrows. Responses were analyzed through qualitative content analysis. The framework included explanatory components and reasoning levels. Most PSTs identified the target phenomenon, entities, and static properties, but struggled with submicroscopic activities, causal sequencing, and organization. Their reasoning remained mainly relational or simple causal, suggesting the need for tasks that foster multilevel mechanistic explanations.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"560-575"},"PeriodicalIF":1.2,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leticia Siqueira Da Silva, Jéssica Nívea Magalhães Rodrigues, Mariana Mariana Fernanda Silva De Oliveira, Pablo Henrique Silva Martins, Hugo Leonardo Souza Lara Leão, Polyana Fernandes Pereira
{"title":"Electrochemical quantification of thymol in Thymus vulgaris essential oil with a 3D-printed electrode.","authors":"Leticia Siqueira Da Silva, Jéssica Nívea Magalhães Rodrigues, Mariana Mariana Fernanda Silva De Oliveira, Pablo Henrique Silva Martins, Hugo Leonardo Souza Lara Leão, Polyana Fernandes Pereira","doi":"10.17344/acsi.2026.9769","DOIUrl":"https://doi.org/10.17344/acsi.2026.9769","url":null,"abstract":"<p><p>Thymol (TM), a monoterpenoid phenol with diverse antioxidant and antimicrobial properties, is of significant interest to the pharmaceutical, food, and agricultural sectors. Due to its importance, this study developed an electrochemical method for its quantification using a 3D-printed electrode made from a conductive carbon black/PLA filament (CB/PLA electrode). Electrochemical measurements were performed using square-wave voltammetry (SWV) in 0.1 mol L⁻1 Na2SO4 (pH 13). The potential was scanned from 0 to +0.80 V, exploiting the oxidation process of TM at approximately +0.30 V (vs. Ag|AgCl|KCl(sat.)). Under the optimized SWV conditions, a linear response was obtained in the concentration range of 75.00 to 337.50 µg/mL (r = 0.99). The proposed method demonstrated excellent analytical characteristics, including high stability (RSD < 9%; n = 6) and a satisfactory recovery value (89%). These results suggest minimal matrix interference, confirming the method's accuracy for analyzing real samples. This work highlights that the combination of 3D-printed electrodes and the SWV technique offers a selective approach for TM analysis. The reliability of the proposed method for quality control in thyme essential oil is confirmed, presenting a promising strategy for monitoring other bioactive compounds with a rapidly manufactured, reproducible, and low-cost electrode.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"538-545"},"PeriodicalIF":1.2,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis, characterization, antibacterial and antifungal activities, and molecular docking studies of two new Schiff bases derived from 2,4-diaminotoluene.","authors":"Khadidja Boukerche, Djahida Haffar, Karima Saffidine, Djalila Boudemagh","doi":"10.17344/acsi.2025.9672","DOIUrl":"https://doi.org/10.17344/acsi.2025.9672","url":null,"abstract":"<p><p>The two symmetric Schiff bases, 3,3'-((1E,1'E)-((4-methyl-1,3-phenylene)bis(azanylylidene)) bis(ethan-1-ylidene))bis(2-hydroxy-6-methyl-4H-pyran-4-one) (DL) and (N1E,N3E)-4-methyl-N1,N3-bis(pyridin-3-ylmethylene)benzene-1,3-diamine (PL), were synthesized and characterized using UV-Vis, FT-IR, 1H NMR, 13C NMR and LC-MS techniques. The infrared and UV-Vis spectral modelling using DFT for DL and PL showed good agreement between theory and experiment. The results of the antibacterial activity tests indicate that PL was more active against all bacterial strains than DL, which exhibited moderate antibacterial activity. Moreover, both compounds DL and PL exhibited significant antifungal potency against Botrytis species. Additionally, in silico ADME-T studies suggest that these compounds may have favourable oral bioavailability and pharmacokinetic properties. In addition, molecular docking studies were conducted to evaluate how these compounds interact with the active-site residues of TEM-1 β-lactamase, an enzyme responsible for the hydrolysis of β-lactam antibiotics. The docking results suggest that the synthesized DL and PL Schiff bases may serve as preliminary scaffolds for the development of new antimicrobial agents.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"527-537"},"PeriodicalIF":1.2,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}