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Sindhu S, Arockiasamy S. Synthesis, crystal structure, thermal stability and biological study of bis{(2-methoxy-6-[(E)-(propylimino)methyl]phenolato}nickel(II) complex. Heliyon 2024; 10:e24108. [PMID: 38293524 PMCID: PMC10825431 DOI: 10.1016/j.heliyon.2024.e24108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/21/2023] [Accepted: 01/03/2024] [Indexed: 02/01/2024] Open
Abstract
A Schiff base complex of nickel, bis{(2-methoxy-6-[(E)-(propylimino)methyl]phenolato}nickel(II) was synthesised by condensing bis(2-hydroxy-3-methoxybenzaldehyde) nickel (II) and n-propylamine in methanolic medium. Single crystal X-ray diffraction analysis of the complex revealed it to possess planar geometry with a monoclinic crystal system. The non-isothermal TG/DTA runs on this complex in a high purity (99.99 %) nitrogen environment at atmospheric pressure confirmed the absence of any coordinated water. A sharp endotherm in its DTA shows a melting temperature range of 168-171 °C. It is thermally stable up to 243 °C and decomposes in two steps, yielding NiO and carbon as residue. In addition to the methoxy group (-OCH3), infrared analysis (IR) confirmed the presence of the characteristic azomethine group (-C[bond, double bond]N-) which is also responsible for the biological action. It was further analysed by elemental analyser (C, H, N), 1H and 13C NMR as well as mass spectrometry. It showed considerable antibacterial activity towards Escherichia coli and Staphylococcus aureus when the concentration exceeds 200 μg/ml. The antifungal study shows significant inhibition with the antifungal drug imidazole as a positive control (PC). Small values of MIC, MBC/MIC indicate a lesser quantity of complex is required to inhibit the growth of micro-organisms.
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Affiliation(s)
- S. Sindhu
- Physics Division, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 127, India
| | - S. Arockiasamy
- Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 127, India
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Alamier WM, Alaghaz ANMA. Design, spectral characterization, quantum chemical investigation, biological activity of nano-sized transition metal complexes of tridentate 3-mercapto-4H-1,2,4-triazol-4-yl-aminomethylphenol Schiff base ligand. J Biomol Struct Dyn 2023:1-21. [PMID: 38133937 DOI: 10.1080/07391102.2023.2294171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023]
Abstract
A tridentate Schiff base ligand, H2MTIP, was produced by condensing salicylaldehyde with 4-amino-4H-1,2,4-triazole-3-thiol. The ligand was then used to create nanosized complexes of Pt(II), Ni(II), Cu(II), and Pd(II). The complexes have the composition [Pt/Ni/Cu/or Pd(MTIP)(H2O)], this conclusion is supported by molar conductance, magnetic moments, elemental analyses, spectral analyses. In DFT analysis, the 6-31+ g(d,p) basis set was used to fully optimize the energy with respect to the shapes of Schiff base ligand and metal complexes. Pt(II), Ni(II), Cu(II), and Pd(II) complexes have been assigned square-planar geometries. At the same time, the intense diffraction peaks in X-ray diffractograms show their crystalline features with particle sizes in the nanoscale range. The binding interaction of calf thymus DNA with these metal complexes and their insulin-like activity was examined in vitro by inhibiting α-amylase. The study investigated the in-vitro activity of several complexes and identified Pt(II) complex as the one with the highest activity. The researchers then tested this complex for in-vivo antidiabetic activity in induced diabetic rats using the STZ model, and it significantly lowered blood glucose levels. The antioxidant activity and toxicity level of Pt(II) complex were also excellent, suggesting that it could be a good candidate for further research as a possible diabetes drug.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Waleed M Alamier
- Department of Chemistry, College of Science, Jazan University, Jazan, Kingdom of Saudi Arabia
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Varshney A, Mishra AP. Synthesis, spectral characterization, computational studies, antifungal, DNA interaction, antioxidant and fluorescence property of novel Schiff base ligand and its metal chelates. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 297:122765. [PMID: 37099994 DOI: 10.1016/j.saa.2023.122765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/30/2023] [Accepted: 04/17/2023] [Indexed: 05/14/2023]
Abstract
Cobalt, Copper, Nickel and Zinc coordinated metal complexes were synthesized by novel thiazole Schiff base ligand 2-ethoxy-4-((5-methylthiazol-2-ylimino)methyl) phenol derived from 3-ethoxy-4-hydroxybenzaldehyde and 2-amino- 5-methylthiazol. The synthesized compounds were spectrochemically characterized by elemental analysis, molar conductance, FT-IR, UV-Vis, Mass spectral analysis, Powdered-XRD and cyclic voltammetry. The thermal stability of synthesized complexes were investigated by using thermogravimetric analysis (TGA). Theoretical computational study were performed for all the synthesized compounds utilizing the DFT/B3LYP method at the 6-31G basic set for Schiff base ligand whereas LANL2DZ basis set for metal complexes. Molecular Electrostatic Potential (MEP), HOMO-LUMO, Mulliken charges and global reactivity descriptors, including chemical potential (μ), global softness (S), chemical hardness (η), and electrophilicity index (ω) were measured and correlated with antimicrobial activity. The synthesized thiazole Schiff base ligand and its coordinated metal complexes shows good antifungal agreement against Fusarium Oxysporum and Aspergillus Niger species. These compounds also exhibit DNA binding, DNA cleaving and antioxidant activity. All the synthesized molecules indicate potential fluorescence property.
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Affiliation(s)
- Anshita Varshney
- Department of Chemistry, Dr. Hari Singh Gour Vishwavidyalaya (a Central University), Sagar, Madhya Pradesh 470003, India.
| | - A P Mishra
- Department of Chemistry, Dr. Hari Singh Gour Vishwavidyalaya (a Central University), Sagar, Madhya Pradesh 470003, India.
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Kumar B, Devi J, Manuja A. Synthesis, structure elucidation, antioxidant, antimicrobial, anti-inflammatory and molecular docking studies of transition metal(II) complexes derived from heterocyclic Schiff base ligands. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04991-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Kant R, Maji S. Synthesis, characterization and biological evaluation of piperazine embedded copper complexes. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Synthesis, crystal structures, electrochemical and gas adsorption properties of two 1D silver(I) coordination polymers constructed from racemic helical ligands. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2022.121242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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CHORFI Z, AGGOUN D, HOUCHI S, MESSASMA Z, El-MAKSOUD MSA, FERNÁNDEZ-GARCĨA M, LÓPEZ D, BENSOUICI C, OURARI A, OUENNOUGHI Y. Interaction of a Novel Inorganic Nickel Complex with Tyrosinase as Potential Inhibitor: Synthesis, Spectroscopic, DFT, NBO, Docking and ADMET Properties. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Aprajita, Choudhary M. Design, synthesis and characterization of novel Ni(II) and Cu(II) complexes as antivirus drug candidates against SARS-CoV-2 and HIV virus. J Mol Struct 2022; 1263:133114. [PMID: 35465175 PMCID: PMC9017811 DOI: 10.1016/j.molstruc.2022.133114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/06/2022] [Accepted: 04/16/2022] [Indexed: 12/16/2022]
Abstract
This paper describes the structure-based design, synthesis and anti-virus effect of two new coordination complexes, a Ni(II) complex [Ni(L)2] (1) and a Cu(II) complex [Cu(L)2] (2) of (E)-N-phenyl-2-(thiophen-2-ylmethylene) hydrazine-1-carbothioamide(HL). The synthesized ligand was coordinated to metal ions through the bidentate-N, S donor atoms. The newly synthesized complexes were characterized by various spectroscopic and physiochemical methods, powdered XRD analysis and also X-ray crystallography study. Ni(II) complex [Ni(L)2](1) crystallize in orthorhombic crystal system with the space group Pbca with four molecules in the unit cell (a = 9.857(3) Å, b = 7.749(2) Å, c = 32.292(10) Å, α = 90°, β = 90°, γ = 90°, Z= 4) and reveals a distorted square planar geometry. A Hirshfeld surface and 2D fingerprint plot has been explored in the crystal structure of Ni(II) complex [Ni(L)2] (1). Energy framework computational analysia has also been explored. DFT based calculations have been performed on the Schiff base and its metal complexes to study the structure-property relationship. Furthermore, the molecular docking studies of the ligand and its metal complexes with SARS-CoV-2 virus (PDB ID: 7BZ5) and HIV-1 virus (PDB ID: 6MQA) are also investigated. The molecular docking calculations of the Ni(II) complex [Ni(L)2] (1) and a Cu(II) complex [Cu(L)2] (2) with SARS-CoV-2 virus revealed that the binding affinities at inhibition binding site of receptor protein are 9.7 kcal/mol and -9.3 kcal/mol, respectively. The molecular docking results showed that the binding affinities of Ni(II) complex (1) and Cu(II) complex (2) against SARS-CoV-2 virus were found comparatively higher than the HIV-1 virus (-8.5 kcal/mol and -8.2 kcal/mol, respectively). As potential drug candidates, Swiss-ADME predictions analyses are also studied and the results are compared with Chloroquine (CQ) and Hydroxychloroquine (HCQ) as anti-SARS-CoV-2 drugs.
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Affiliation(s)
- Aprajita
- Department of Chemistry, National Institute of Technology Patna, Patna, Bihar 800005, India
| | - Mukesh Choudhary
- Department of Chemistry, National Institute of Technology Patna, Patna, Bihar 800005, India
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Thermal and kinetic analysis of a new hydrazone-oxime ligand and its cadmium(II) complex: Synthesis, spectral characterization, crystallographic determination and Hirshfeld surface analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Coordination of new palladium (II) complexes with derived furopyran-3,4‑dione ligands: Synthesis, characterization, redox behaviour, DFT, antimicrobial activity, molecular docking and ADMET studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132611] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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A Highly Efficient Environmental-Friendly Adsorbent Based on Schiff Base for Removal of Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study. Molecules 2021; 26:molecules26175164. [PMID: 34500598 PMCID: PMC8434251 DOI: 10.3390/molecules26175164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 02/07/2023] Open
Abstract
Removal of heavy metals from drinking water sources and rivers is of strategic health importance and is essential for sustainable ecosystem development, in particular in polluted areas around the globe. In this work, new hybrid inorganic-organic material adsorbents made of ortho- (Si-o-OR) or para-Schiff base silica (Si-p-OR) were synthesized and characterized in depth. These hybrid adsorbents show a high selectivity to Cu(II), even in the presence of competing heavy metals (Zn(II), Cd(II), and Pb(II)), and also demonstrate great reusability after five adsorption-desorption cycles. Maximum sorption capacity for Cu(II) was found for Si-o-OR (79.36 mg g−1) and Si-p-OR (36.20 mg g−1) in no less than 25 min. Energy dispersive X-ray fluorescence and Fourier transform-infrared spectroscopy studies demonstrate that this uptake occurs due to a chelating effect, which allows these adsorbents to trap Cu(II) ions on their surfaces; this result is supported by a theoretical study for Si-o-OR. The new adsorbents were tested against real water samples extracted from two rivers from the Oriental region of Morocco.
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Lupașcu G, Pahonțu E, Shova S, Bărbuceanu ȘF, Badea M, Paraschivescu C, Neamțu J, Dinu M, Ancuceanu RV, Drăgănescu D, Dinu‐Pîrvu CE. Co (II), Cu (II), Mn (II), Ni (II), Pd (II), and Pt (II) complexes of bidentate Schiff base ligand: Synthesis, crystal structure, and acute toxicity evaluation. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6149] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Gina Lupașcu
- Physiology Department, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Elena Pahonțu
- Inorganic Chemistry Department, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Sergiu Shova
- Bioinorganic Chemistry Laboratory Institute of Macromolecular Chemistry “Petru Poni” Iasi Romania
| | - Ștefania Felicia Bărbuceanu
- Organic Chemistry Department, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Mihaela Badea
- Inorganic Chemistry Department, Faculty of Chemistry University of Bucharest Bucharest Romania
| | - Codruța Paraschivescu
- Organic Chemistry Department, Faculty of Chemistry University of Bucharest Bucharest Romania
| | - Johny Neamțu
- Pharmacy Department I University of Medicine and Pharmacy Craiova Craiova Romania
| | - Mihaela Dinu
- Pharmaceutical Botany and Cell Biology Department, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Robert Viorel Ancuceanu
- Pharmaceutical Botany and Cell Biology Department, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Doina Drăgănescu
- Pharmaceutical Physics Department, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Cristina Elena Dinu‐Pîrvu
- Physical and Colloidal Chemistry Department, Carol Davila Carol Davila University of Medicine and Pharmacy Bucharest Romania
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