PolyhedronPub Date : 2025-04-28DOI: 10.1016/j.poly.2025.117570
Nuhaa Shaheed , Ahmad Shaabani
{"title":"A comprehensive review on the rational design of MOF-based heterogeneous catalysts for the classic Biginelli reaction","authors":"Nuhaa Shaheed , Ahmad Shaabani","doi":"10.1016/j.poly.2025.117570","DOIUrl":"10.1016/j.poly.2025.117570","url":null,"abstract":"<div><div>The classic Biginelli reaction is a sustainable and powerful tool for synthesizing dihydropyrimidinone scaffolds (DHPMs) through an acid-catalyzed one-pot-three component process. Since such a multi-component reaction is accompanied by an entropy decrease in the transition state, utilizing a heterogeneous porous catalyst with abundant acidic sites will be beneficial. Activating reagents within catalyst cavities, which act as nanoreactors, helps stabilize the tightly bound transition state, reducing the activation energy and accelerating the reaction rate. As a unique class of porous crystalline materials with intrinsic acidic properties, metal–organic frameworks (MOFs) offer promising potential for catalyzing this reaction. Their catalytic activity originates from defects in the crystalline lattice and/or from functional groups on their organic linkers and/or inorganic nodes. Additionally, encapsulating catalytic guest species inside their pores can further enhance their catalytic activity. Furthermore, functionalizing the outer surface of MOF particles or hybridizing them with other materials can further tailor their properties, offering improved performance based on the nature of the materials incorporated. This review explains the current state-of-the art in using MOF-based solid platforms as porous heterogeneous catalysts for the classic Biginelli reactions. After providing a background introduction to the Biginelli reaction, its mechanistic aspects and the methods for characterizing MOF-based catalysts are reviewed. Finally, conclusion, challenges, and future trends were discussed. Despite the numerous reviews exist on the Biginelli reaction, no comprehensive study has specifically focused on the use of MOFs as catalysts for this reaction. This review aims to address this gap by presenting a detailed overview of MOFs as powerful and versatile heterogeneous catalysts for the Biginelli reaction. We hope this critical appraisal will serve as a foundation for researchers to design and develop more efficient MOF-based catalysts for this important transformation.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"277 ","pages":"Article 117570"},"PeriodicalIF":2.4,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885930","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}
PolyhedronPub Date : 2025-04-27DOI: 10.1016/j.poly.2025.117568
Aleksandra V. Tiunova, Denis V. Korchagin, Gennady V. Shilov, Yuriy V. Manakin, Aleksei I. Dmitriev, Mikhail V. Zhidkov, Anna V. Kazakova, Sergey M. Aldoshin, Eduard B. Yagubskii
{"title":"Cation spin-crossover complexes of Mn(III) with 3,5-dihalogen-substituted ligands of the sal2323 family and the paramagnetic counterion [Co(pdms)2]2−","authors":"Aleksandra V. Tiunova, Denis V. Korchagin, Gennady V. Shilov, Yuriy V. Manakin, Aleksei I. Dmitriev, Mikhail V. Zhidkov, Anna V. Kazakova, Sergey M. Aldoshin, Eduard B. Yagubskii","doi":"10.1016/j.poly.2025.117568","DOIUrl":"10.1016/j.poly.2025.117568","url":null,"abstract":"<div><div>The cationic complexes of Mn(III) with the 3,5-diHal-sal<sub>2</sub>323 ligands ((3,5-diHal-sal<sub>2</sub>323 = N,N′-bis(3-(2-oxy-3,5-diHal-benzylideneamino)propyl)-ethylenediamine); Hal = Cl/Cl, Br/Cl, Br/Br) and a paramagnetic doubly charged counterion [Co(pdms)<sub>2</sub>]<sup>2−</sup> (H<sub>2</sub>pdms = 1,2-bis(methanesulfonamide)benzene) have been synthesized: {[Mn(3,5-diCl-sal<sub>2</sub>323)]<sub>2</sub>[Co(pdms)<sub>2</sub>]}·(H<sub>2</sub>O)<sub>x</sub> (<strong>1</strong>), {[Mn(3,5-Br,Cl-sal<sub>2</sub>323)]<sub>2</sub>[Co(pdms)<sub>2</sub>]}·(H<sub>2</sub>O)<sub>x</sub> (<strong>2</strong>), and {[Mn(3,5-diBr-sal<sub>2</sub>323)]<sub>2</sub>[Co(pdms)<sub>2</sub>]}·(H<sub>2</sub>O)<sub>x</sub> (<strong>3</strong>). Their crystal structures and magnetic properties have been studied. These two-component ionic compounds are isostructural and exhibit thermally induced incomplete spin transition in the temperature range 100–350 K associated with the cationic subsystem and a strong uniaxial magnetic anisotropy associated with the anionic subsystem. A study of <em>ac</em> the magnetic susceptibility in zero magnetic field and with a constant magnetic field applied has shown that the slow magnetic relaxation previously found in [Co(pdms)<sub>2</sub>]<sup>2−</sup> complexes with some diamagnetic cations is suppressed in <strong>1</strong>–<strong>3</strong>. In structure <strong>1</strong>–<strong>3</strong> there are shortened distances between the Co and Mn ions (6.75–6.76 Å), which may lead to significant dipole–dipole interactions between the spin centres, promoting very fast magnetic relaxation associated with quantum tunneling of the magnetization.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"277 ","pages":"Article 117568"},"PeriodicalIF":2.4,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894316","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":"Electrodeposition of nickel-titanium dioxide coatings and powders from aqueous sulfate solutions","authors":"Tazhibayeva Aigerim Shotaevna , Bayeshova Azhar Kospanovna , Bayeshov Abduali , Osińska Małgorzata","doi":"10.1016/j.poly.2025.117571","DOIUrl":"10.1016/j.poly.2025.117571","url":null,"abstract":"<div><div>The development of composite electrochemical coatings represents an important direction in surface engineering that allows significant improvement of material properties while maintaining substrate integrity. Electrodeposited nickel coatings with ceramic particle inclusions are particularly promising due to their enhanced mechanical and corrosion resistance characteristics. The reduction process of Ni<sup>2+</sup> from sulfate solutions containing titanium dioxide as a dispersed phase was studied by cyclic voltammetry. It was established that during cathodic polarization, nickel is deposited on the copper electrode surface together with titanium dioxide, forming a Ni-TiO<sub>2</sub> composite electrochemical coating. To determine the corrosion resistance of the coatings, anodic and cathodic polarization curves were recorded for both nickel coating and nickel-titanium dioxide composite coating. It was shown that the composite coating exhibits resistance to dissolution under anodic polarization.</div><div>The obtained Ni-TiO<sub>2</sub> composite coatings were studied using X-ray fluorescence spectroscopy, scanning electron microscopy, and energy dispersive spectrometry. The nickel powders with titanium dioxide inclusions obtained during the experiments represent materials with unique performance properties due to their magnetic nature and synergistic interaction between components. The magnetic properties of nickel make this material indispensable in such areas as the production of magnets, magnetic cores, sensors, transducers and data storage devices, while the incorporation of titanium dioxide is particularly useful for providing additional oxidation resistance and increasing mechanical strength. This research contributes to the development of advanced functional materials with improved corrosion resistance and performance characteristics using a relatively simple production method.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"277 ","pages":"Article 117571"},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907628","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":"Spectrophotometric in vitro cholinergic enzyme inhibitory potentials of novel functional Schiff bases and their peripheral CoII and CuII phthalocyanines in the treatment of Alzheimer’s disease","authors":"Halise Yalazan , Gökçe Seyhan , Ceren Boğuşlu , Burak Barut , Halit Kantekin","doi":"10.1016/j.poly.2025.117567","DOIUrl":"10.1016/j.poly.2025.117567","url":null,"abstract":"<div><div>Cholinergic neurons and presynaptic indicators of the cholinergic system gradually disappear as a result of neurodegenerative disorders, including Alzheimer’s disease (AD), one of the most prevalent causes of dementia. By inhibiting acetylcholinesterase (AChE) and thus reducing the rate of acetylcholine hydrolysis, these effects can be counteracted. Anticholinesterase medications that have reversible inhibitory effects are therefore used to treat neurodegenerative illnesses. This work involved the synthesis of Schiff base compounds (<strong>Schiffb.OH/CN</strong>) and their cobalt (<strong>Schiffb.CoPc</strong>) and copper (<strong>Schiffb.CuPc</strong>) phthalocyanine compounds, as well as spectrophotometric analysis of their <em>in vitro</em> cholinergic enzyme inhibitory potentials. Overall, it was found that, when compared to the other compounds examined, <strong>Schiffb.CuPc</strong> was the most potent inhibitor. Furthermore, it exhibited statistically comparable results to the positive control, galantamine (26.17 ± 0.52 µM). However, at the concentrations examined, it was shown that the compounds exhibited no action against BuChE. The compounds may be selective for AChE, according to this research.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"277 ","pages":"Article 117567"},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892186","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}
PolyhedronPub Date : 2025-04-22DOI: 10.1016/j.poly.2025.117565
Sarra Sibous , Abdelkarim Ouass , Driss El Mekkaoui , Fatima El Hajri , Anass Hatim , Abdelaziz Elouahli , Haddou Anahmadi , Youssef Lemallam , Rachid Hsissou , Zakaria Benzekri , Zineb Hatim , Nour El Hoda Mustaphi , El Housseine Rifi , Abdelaziz Souizi , Said Boukhris
{"title":"Apatite tricalcium phosphate powder Ca9(HPO4)(PO4)5(OH) is an effective and eco-friendly catalyst for the green synthesis of 3,4-dihydropyrano[c]chromenes and tetrahydrobenzo[b]pyrans derivatives","authors":"Sarra Sibous , Abdelkarim Ouass , Driss El Mekkaoui , Fatima El Hajri , Anass Hatim , Abdelaziz Elouahli , Haddou Anahmadi , Youssef Lemallam , Rachid Hsissou , Zakaria Benzekri , Zineb Hatim , Nour El Hoda Mustaphi , El Housseine Rifi , Abdelaziz Souizi , Said Boukhris","doi":"10.1016/j.poly.2025.117565","DOIUrl":"10.1016/j.poly.2025.117565","url":null,"abstract":"<div><div>This research investigation presents an in-depth assessment of the catalytic efficacy of Ca<sub>9</sub>(HPO<sub>4</sub>)(PO<sub>4</sub>)<sub>5</sub>(OH) in the context of sustainable pyran derivative synthesis. The characterization of Ca<sub>9</sub>(HPO<sub>4</sub>)(PO<sub>4</sub>)<sub>5</sub>(OH) was conducted using a range of analytical techniques, including Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), elemental mapping, and X-ray diffraction (XRD). The Ca<sub>9</sub>(HPO<sub>4</sub>)(PO<sub>4</sub>)<sub>5</sub>(OH) catalyst exhibited noteworthy efficiency in catalyzing the synthesis of 3,4-dihydropyrano[<em>c</em>]chromenes and tetrahydrobenzo[<em>b</em>]pyrans derivatives by multicomponent condensation via the reaction between three components: malononitrile, 4-hydroxycoumarin or dimedone and aromatic aldehydes, under optimum reaction conditions. In addition to infrared spectroscopy, these derivatives are identified by proton and carbon nuclear magnetic resonance. This approach offers several advantages, including simple purification, obtaining the desired products in good to excellent yields and in a relatively short time, and the possibility of reusing the catalyst up to five times without any significant loss of efficiency.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"277 ","pages":"Article 117565"},"PeriodicalIF":2.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881713","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":"New and robust magnetically recoverable catalyst for the green synthesis of benzothiazoles and benzoxazoles","authors":"Fadhel F. Sead , Vicky Jain , Roopashree R , Anita Devi , Aditya Kashyap , Girish Chandra Sharma , Pushpa Negi Bhakuni , Mosstafa Kazemi , Ramin Javahershenas","doi":"10.1016/j.poly.2025.117564","DOIUrl":"10.1016/j.poly.2025.117564","url":null,"abstract":"<div><div>In this study, we present the development of a groundbreaking, magnetically reusable nanocatalyst designed to streamline the condensation reactions of 2-aminobenzenethiol and 2-aminophenol derivatives with aryl nitriles. This process results in the efficient formation of various 2-substituted benzoxazole and benzothiazole derivatives, all while adhering to environmentally friendly practices. The catalyst employed in our research is a complex formed from 4-(2-amino-1-hydroxyethyl)benzene-1,2-diol and CuCl<sub>2</sub>, which is skillfully immobilized on Fe<sub>3</sub>O<sub>4</sub> nanoparticles, yielding the composite known as Fe<sub>3</sub>O<sub>4</sub>@Diol-AHEB-CuCl<sub>2</sub>. The remarkable efficiency of this catalytic system is evident from the high to outstanding yields achieved for all products, showcasing its superior catalytic performance. Furthermore, our experimental findings reveal the impressive durability of the Fe<sub>3</sub>O<sub>4</sub>@Diol-AHEB-CuCl<sub>2</sub> catalyst, as it maintains its catalytic activity even after being recycled and reused up to eight times without a significant decline in performance. This study highlights the considerable advantages offered by this innovative catalytic approach over traditional methods, which include heightened efficiency in product yield, minimized reaction times, the use of ethanol as a green solvent, straightforward isolation of the catalyst, and a robust activity profile. These features collectively underscore the promising outlook for this catalytic system in the synthesis of valuable chemical compounds.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"276 ","pages":"Article 117564"},"PeriodicalIF":2.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870902","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}
PolyhedronPub Date : 2025-04-21DOI: 10.1016/j.poly.2025.117562
Xinhua Hu , Hongbo Tong , Meisu Zhou
{"title":"Unsymmetrical amidinate complexes of cobalt and manganese: Synthesis, structure and catalytic properties","authors":"Xinhua Hu , Hongbo Tong , Meisu Zhou","doi":"10.1016/j.poly.2025.117562","DOIUrl":"10.1016/j.poly.2025.117562","url":null,"abstract":"<div><div>Unsymmetrical amidinate Co(Ⅱ) complexes [Co{N(2,6-<em><sup>i</sup></em>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)C(Ph)N(SiMe<sub>3</sub>)}<sub>2</sub>] (<strong>1</strong>,<strong>1a</strong>) and Mn(Ⅱ) complex [Mn{N(2,6-<em><sup>i</sup></em>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)C(Ph)N(SiMe<sub>3</sub>)}<sub>2</sub>PhCN] (<strong>3</strong>) were synthesized and characterized. Their single crystal X-ray diffraction results were presented to analyze the differences in crystal formation. These complexes were used as catalyst in the addition reaction of aromatic amines with <em>N,N’</em>-diisopropylcarbodiimide. Complex <strong>1</strong> exhibits relatively higher catalytic activity. Especially in the addition reaction of 2,6-diisopropylaniline, which has large steric hindrance, with <em>N,N’</em>-diisopropylcarbodiimide in THF solvent, the catalyzed yield could be up to 99 %.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"276 ","pages":"Article 117562"},"PeriodicalIF":2.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874394","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}
PolyhedronPub Date : 2025-04-21DOI: 10.1016/j.poly.2025.117560
Nahid Askari , Hamide Hojabrpour , Mohammad Reza Mirzaei , Vahid Mirzaei , Reza Hosseiniara , Soudeh Khanamani Falahati-pour
{"title":"Green synthesis and anti-cancer properties of cerium oxide nanoparticles using pistachio vera pericarp essential oil","authors":"Nahid Askari , Hamide Hojabrpour , Mohammad Reza Mirzaei , Vahid Mirzaei , Reza Hosseiniara , Soudeh Khanamani Falahati-pour","doi":"10.1016/j.poly.2025.117560","DOIUrl":"10.1016/j.poly.2025.117560","url":null,"abstract":"<div><h3>Background</h3><div>In recent years, there has been a growing interest among researchers in the potential applications of metal oxide nanoparticles in medicine.</div></div><div><h3>Objective</h3><div>This study aims to synthesize cerium oxide nanoparticles (CeO2 NPs) using pistachio vera pericarp essential oil (PVEO) as a stabilizing agent. We also seek to evaluate their anti-cancer properties and the combined effects with zoledronic acid on human prostate cancer cells (LNCap) and breast cancer cells (MCF7).</div></div><div><h3>Methods</h3><div>CeO2 nanoparticles were synthesized by dissolving cerium nitrate in water and combining it with PVEO. The resulting solution was heated and stirred to form a gel, which was subsequently heated to produce the CeO2 NPs. Characterization of the nanoparticles was conducted using scanning electron microscopy (SEM) and X-ray diffraction (XRD). LNCap and MCF7 cells were cultured and treated with varying concentrations of CeO2 NPs and zoledronic acid (ZA). Cell viability was assessed through the MTT assay, while gene expression was analyzed using reverse transcription quantitative polymerase chain reaction (RT-qPCR). Statistical analysis was performed to interpret the results.</div></div><div><h3>Results</h3><div>The SEM and XRD analyses confirmed the size, shape, phase, and chemical composition of the synthesized CeO2 NPs. Biological assays revealed significant cytotoxic effects of CeO2 NPs against both LNCap and MCF7 cells. The treatment with CeO2 NPs, either alone or in combination with zoledronic acid, resulted in reduced cell viability and impacted cell proliferation, apoptosis, and migration by modulating the expression of genes associated with apoptosis. Notably, the combination of PVEO and zoledronic acid exhibited a synergistic effect on both cancer cell lines.</div></div><div><h3>Conclusion</h3><div>The cerium oxide nanoparticles synthesized using pistachio pericarp essential oil demonstrated substantial cytotoxic effects against prostate and breast cancer cells. These findings indicate that PVEO-derived CeO2 NPs may represent a promising new approach for treating these types of cancer.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"277 ","pages":"Article 117560"},"PeriodicalIF":2.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907629","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":"Exploring the chemistry of divalent P(I) compounds: An insight from theory","authors":"Bijoy Ghosh , Sanchaita Rajkhowa , Bitupon Borthakur","doi":"10.1016/j.poly.2025.117561","DOIUrl":"10.1016/j.poly.2025.117561","url":null,"abstract":"<div><div>Density Functional Theory (DFT) calculations were employed to explore the fascinating electronic and ligand properties of a range of carbene-phosphinidene adducts. All the molecules feature varying degrees of double bond character between the phosphorus and central carbon atom of the carbene moiety. Moreover, inspection of molecular orbitals reveals the presence of two lone pairs (σ- and π-symmetry) concentrated at the phosphorus atom in all adducts thereby indicating double donation ability of all the carbene-phosphinidene adducts. Both proton affinity and complexation energy calculations indicate the dibasic nature of the carbene-phosphinidene adducts considered in this study.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"276 ","pages":"Article 117561"},"PeriodicalIF":2.4,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860022","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}
PolyhedronPub Date : 2025-04-18DOI: 10.1016/j.poly.2025.117549
Mahdi Behzad , Liana Ghasemi , Alireza Abbasi
{"title":"Crystal structural characterization, molecular docking and ADMET analysis of new Cu(II) Schiff base complexes: Antiviral properties against SARS-CoV-2 and HPV","authors":"Mahdi Behzad , Liana Ghasemi , Alireza Abbasi","doi":"10.1016/j.poly.2025.117549","DOIUrl":"10.1016/j.poly.2025.117549","url":null,"abstract":"<div><div>We synthesized and characterized two new mixed-ligand Cu(II) complexes: [Cu(SB<sup>1</sup>)(py)]ClO<sub>4</sub> and [Cu(SB<sup>2</sup>)]ClO<sub>4</sub>. The SB<sup>1</sup> ligand is a tridentate N<sub>2</sub>O-type unsymmetrical Schiff base formed from the condensation of one amino group of 2,2-dimethyl-1,3-propanediamine with salicylaldehyde. In contrast, the tetradentate N<sub>3</sub>O-type SB<sup>2</sup> is derived from further condensation of the remaining amino group with methyl-2-pyridyl ketone. The crystal structure of [Cu(SB<sup>2</sup>)]ClO<sub>4</sub> was confirmed via single-crystal X-ray crystallography (SCXRC). Molecular docking and ADMET analyses were employed to evaluate the interactions of these complexes and their Schiff base ligands with proteins associated with SARS-CoV-2 (PDB ID: 6LU7) and Human Papillomavirus (HPV, PDB ID: 4XR8). Additionally, the antiviral drugs famciclovir (for HPV) and baricitinib (for SARS-CoV-2) were included for comparison. The molecular docking results revealed that [Cu(SB<sup>1</sup>)(py)]ClO<sub>4</sub> exhibited significant binding affinity, indicated by higher negative estimated free binding energy (EFBE) values with 6LU7 and the dimer form of [Cu(SB<sup>2</sup>)]ClO<sub>4</sub> shows the best performance with 4XR8. In silico ADMET assessments suggest that these complexes and their corresponding Schiff base ligands possess favorable drug-like properties, highlighting their potential as therapeutic candidates.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"276 ","pages":"Article 117549"},"PeriodicalIF":2.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860021","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}