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Maurya MR, Kumar N, Avecilla F. Controlled Modification of Triaminoguanidine-Based μ 3 Ligands in Multinuclear [V IVO]/[V VO 2] Complexes and Their Catalytic Potential in the Synthesis of 2-Amino-3-cyano-4 H-pyrans/4 H-chromenes. Inorg Chem 2024; 63:2505-2524. [PMID: 38243891 DOI: 10.1021/acs.inorgchem.3c03704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Reaction of tris(2-hydroxybenzylidene)-triaminoguanidinium chloride (I·HCl) and tris(5-bromo-2-hydroxybenzylidene)-triaminoguanidinium chloride (II·HCl) with [VIVO(acac)2] (1:1 molar ratio) in refluxing methanol resulted in mononuclear [VIVO] complexes, [VIVO(H2L1')(MeOH)] (1) and [VIVO(H2L2')(MeOH)] (2), respectively, where I and II undergo intramolecular triazole ring formation. Aerial oxidation of 1 and 2 in MeOH in the presence of Cs2CO3 gave corresponding cis-[VVO2] complexes Cs[(VO2)(H2L1')] (3) and Cs[(VO2)(H2L2')] (4). However, reaction of an aerially oxidized methanolic solution of [VIVO(acac)2] with I·HCl and II·HCl in the presence of Cs2CO3 (in 1:1:1 molar ratio) gave mononuclear complexes Cs[(VO2)(H3L1)] (5) and Cs[(VO2)(H3L2)] (6) without intramolecular triazole ring formation. Similar anionic trinuclear complexes Cs2[(VO2)3(L1)] (7) and Cs2[(VO2)3(L2)] (8) were isolable upon increasing the amounts of the vanadium precursor and Cs2CO3 to 3 equiv to the reaction applied for 5 and 6. Keeping the reaction mixture of 1 in MeOH under air gave [VVO(H2L1')(OMe)] (9). Structures of 3, 7, 8, and 9 were confirmed by X-ray crystal structure study. A permanent porosity in the crystalline metal-organic framework of 7 confirmed by single-crystal X-ray investigation was further verified by the BET study. Along with a suitable reaction mechanism, these synthesized compounds were explored as effective catalysts for the synthesis of biomolecules 4H-pyran/4H-chromenes.
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Affiliation(s)
- Mannar R Maurya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Naveen Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Fernando Avecilla
- Universidade da Coruña, Grupo NanoToxGen, Centro Interdisciplinar de Química y Biología (CICA), Departamento de Química, Facultade de Ciencias, Campus de A Coruña, 15071A Coruña, Spain
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Kumar K, Datta A, Rohilla J, Thakur S, Singh R, Kaur V. Engineered organotin(IV) and vanadium(V) derivatives with distinct coordination modes and luminescent properties for the efficient detection and quantification of permanganate ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 294:122521. [PMID: 36842208 DOI: 10.1016/j.saa.2023.122521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/26/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
The distinction in coordination modes of metal complexes leads to their versatile structural features and unique properties. Here, we report two tetradentate Schiff base ligands (H2L1 and H2L2) bearing N2O2 donor sets, tactically selected to provide distinct coordination modes with different metal ions. The ligands were utilized to synthesize their organotin(IV) (1-4) and vanadium(V) (5) derivatives. The synthesized compounds were characterized using elemental analysis, FT-IR spectroscopy, multi-nuclei NMR (1H, 13C, and 119Sn) spectroscopy, mass spectrometry, and single-crystal X-ray diffraction. The organotin(IV) derivatives (1-4) displayed hepta-coordination around both the Sn centres as they were achieved in their dimeric form. Contrariwise, the vanadium(V) compound (5) was isolated as a mononuclear entity exhibiting penta-coordinated geometry around the vanadium centre. The variation in the coordination modes was evident in their UV-vis and fluorescence spectra. The organotin(IV) compounds (1-4) exhibited a strong emission band centred at 468 nm when excited at a wavelength of 360 nm whereas the vanadium(V) (5) derivative displayed poor fluorogenic response. Compound 1 was further explored for the fluorogenic chemo-sensing of permanganate ions (MnO4-) amongst various anions by quenching response. A detailed investigation of the recognition of permanganate ions was accomplished by spectrofluorometric, spectroscopic (119Sn NMR), mass spectrometric, and computational studies.
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Affiliation(s)
- Keshav Kumar
- Department of Chemistry, Panjab University, Sector-14, Chandigarh 160014, India
| | - Agrima Datta
- Department of Chemistry, DAV College, Sector 10, Chandigarh 160011, India
| | - Jyoti Rohilla
- Department of Chemistry, Panjab University, Sector-14, Chandigarh 160014, India
| | - Sahil Thakur
- Department of Chemistry, Panjab University, Sector-14, Chandigarh 160014, India
| | - Raghubir Singh
- Department of Chemistry, DAV College, Sector 10, Chandigarh 160011, India.
| | - Varinder Kaur
- Department of Chemistry, Panjab University, Sector-14, Chandigarh 160014, India.
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Ionic Dioxidovanadium(V) Complexes with Schiff-Base Ligands as Potential Insulin-Mimetic Agents-Substituent Effect on Structure and Stability. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206942. [PMID: 36296535 PMCID: PMC9607307 DOI: 10.3390/molecules27206942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/12/2022]
Abstract
Four dioxidovanadium(V) complexes with Schiff-base ligands based on 2-hydroxybenzhydrazide with four different substituted salicylaldehydes (5-chlorosalicylaldehyde, 3,5-dichlorosalicylaldehyde, 5-nitrosalicylaldehyde, 3-bromo-5-chlorosalicylaldehyde) were synthesized and described, by using V2O5 and triethylamine. The single crystal X-ray structure measurements as well as elemental analyses and IR spectra confirmed the formulas of the ionic complexes with a protonated triethylamine acting as counterion, HTEA[VO2(L)] (HL = Schiff-base ligand). The kinetic stability of the complexes at pH = 2 and 7 was discussed with respect to the neutral vanadium(V) complexes previously studied as potential insulin-mimetic agents. A correlation between the substituents in an aromatic ring of the Schiff-base ligands with crystal packing, and also with the stability of the compounds, was presented.
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Schons AB, Correa JS, Appelt P, Meneguzzi D, Cunha MAA, Bittencourt C, Toma HE, Anaissi FJ. Eco-Friendly Synthesis of an Oxovanadium(IV)- bis(abietate) Complex with Antimicrobial Action. Molecules 2022; 27:molecules27196679. [PMID: 36235216 PMCID: PMC9573124 DOI: 10.3390/molecules27196679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 11/07/2022] Open
Abstract
The search for less expensive and viable products is always one of the challenges for research development. Commonly, the synthesis of coordination compounds involves expensive ligands, through expensive and low-yield routes, in addition to generating toxic and unusable residues. In this work, the organic ligand used is derived from the resin of a reforestation tree, Pinus elliottii var. elliottii. The synthesis method used Pinus resin and an aqueous solution of vanadium(III) chloride at a temperature of 80 °C. The procedure does not involve organic solvents and does not generate toxic residues, thus imparting the complex formation reaction a green chemistry character. The synthesis resulted in an unprecedented oxovanadium(IV)-bis(abietate) complex, which was characterized by mass spectrometry (MS), chemical analysis (CHN), vibrational (FTIR) and electronic spectra (VISIBLE), X-ray diffraction (XRD), and thermal analysis (TG/DTA). Colorimetric studies were performed according to the CIELAB color space. The structural formula found, consisted of a complex containing two abietate ligands, [VO(C20H29O2)2]. The VO(IV)-bis(abietate) complex was applied against microorganisms and showed promising results in antibacterial and antifungal activity. The best result of inhibitory action was against the strains of Gram-positive bacteria S. aureus and L. monocytogenes, with minimum inhibitory concentration (MIC) values of 62.5 and 125 μmol L−1, respectively. For Gram-negative strains the results were 500 μmol L−1 for E. coli; and 1000 μmol L−1 for Salmonella enterica Typhimurium. Antifungal activity was performed against Candida albicans, where the MIC was 15.62 μmol L−1, and for C. tropicalis it was 62.5 μmol L−1. According to the MFC analysis, the complex presented, in addition to the fungistatic action, a fungicidal action, as there was no growth of fungi on the plates tested. The results found for the tests demonstrate that the VO(IV)-bis(abietate) complex has great potential as an antimicrobial and mainly antifungal agent. In this way, the pigmented ink with antimicrobial activity could be used in environments with a potential risk of contamination, preventing the spread of microorganisms harmful to health.
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Affiliation(s)
- Aline B. Schons
- Department of Chemistry, Universidade Estadual do Centro-Oeste, UNICENTRO, Alameda Elio Antonio Dalla Vecchia, 838, Guarapuava 85040-167, PR, Brazil
| | - Jamille S. Correa
- Department of Chemistry, Universidade Estadual do Centro-Oeste, UNICENTRO, Alameda Elio Antonio Dalla Vecchia, 838, Guarapuava 85040-167, PR, Brazil
| | - Patricia Appelt
- Department of Chemistry, Universidade Estadual do Centro-Oeste, UNICENTRO, Alameda Elio Antonio Dalla Vecchia, 838, Guarapuava 85040-167, PR, Brazil
| | - Daiane Meneguzzi
- Department of Chemistry, Universidade Tecnológica Federal do Paraná, UTFPR, Via do Conhecimento, KM 01, Fraron, Pato Branco 85503-390, PR, Brazil
| | - Mário A. A. Cunha
- Department of Chemistry, Universidade Tecnológica Federal do Paraná, UTFPR, Via do Conhecimento, KM 01, Fraron, Pato Branco 85503-390, PR, Brazil
| | - Carla Bittencourt
- Department of Chemistry, University of Mons, Place du Parc 23, 7000 Mons, Belgium
| | - Henrique E. Toma
- Institute of Chemistry, University of Sao Paulo, São Paulo 05508-000, SP, Brazil
| | - Fauze J. Anaissi
- Department of Chemistry, Universidade Estadual do Centro-Oeste, UNICENTRO, Alameda Elio Antonio Dalla Vecchia, 838, Guarapuava 85040-167, PR, Brazil
- Correspondence:
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Pincer Complexes Derived from Tridentate Schiff Bases for Their Use as Antimicrobial Metallopharmaceuticals. INORGANICS 2022. [DOI: 10.3390/inorganics10090134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Within the current challenges in medicinal chemistry, the development of new and better therapeutic agents effective against infectious diseases produced by bacteria, fungi, viruses, and parasites stands out. With chemotherapy as one of the main strategies against these diseases focusing on the administration of organic and inorganic drugs, the latter is generally based on the synergistic effect produced by the formation of metal complexes with biologically active organic compounds. In this sense, Schiff bases (SBs) represent and ideal ligand scaffold since they have demonstrated a broad spectrum of antitumor, antiviral, antimicrobial, and anti-inflammatory activities, among others. In addition, SBs are synthesized in an easy manner from one-step condensation reactions, being thus suitable for facile structural modifications, having the imine group as a coordination point found in most of their metal complexes, and promoting chelation when other donor atoms are three, four, or five bonds apart. However, despite the wide variety of metal complexes found in the literature using this type of ligands, only a handful of them include on their structures tridentate SBs ligands and their biological evaluation has been explored. Hence, this review summarizes the most important antimicrobial activity results reported this far for pincer-type complexes (main group and d-block) derived from SBs tridentate ligands.
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Taherkhani H, Ramazani A, Sajjadifar S, Aghahossieini H, Rezaei A. Design and Preparation of Copper(II)-Mesalamine Complex Functionalized on Silica-Coated Magnetite Nanoparticles and Study of Its Catalytic Properties for Green and Multicomponent Synthesis of Highly Substituted 4 H-Chromenes and Pyridines. ACS OMEGA 2022; 7:14972-14984. [PMID: 35557658 PMCID: PMC9089390 DOI: 10.1021/acsomega.2c00731] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/07/2022] [Indexed: 05/13/2023]
Abstract
In the present study, a green and ecofriendly nanocatalyst was synthesized through functionalization of 2,4,6-trichloro-1,3,5-triazine (TCT) and mesalamine on silica-coated magnetic nanoparticles (MNPs), then coordination with Cu2+ without agglomeration, consecutively. The silica-coated MNPs functionalized with the Cu(*II)-mesalamine complex was (Fe3O4@SiO2@NH2-TCT-mesalamine-Cu(II) MNPs) completely characterized by FT-IR, XRD, EDX, FESEM, TEM, VSM, TGA, and BET analyses. Afterward, the activity of the novel catalyst was investigated in the synthesis of chromene heterocycles, which were an important group of organic compounds. The activity of Fe3O4@SiO2@NH2-TCT-mesalamine-Cu(II) MNPs as a high-performance heterogeneous nanocatalyst was evaluated for the synthesis of 2-amino-4-aryl-6-(phenylthio)pyridine-3,5-dicarbonitriles and 2-amino-4H-chromenes via aromatic aldehydes, malononitrile, and enolizable C-H acids (resorcinol, 2-hydroxynaphthalene-1,4-dione, and benzenethiol) in ethanol under reflux conditions. Fe3O4@SiO2-TCT-mesalamine-Cu(II) could be quickly separated using an external magnet and reused nine times without a remarkable reduction of its catalytic activity.
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Affiliation(s)
- Hooman Taherkhani
- Department
of Chemistry, Faculty of Science, University
of Zanjan, Zanjan 45371-38791, Iran
| | - Ali Ramazani
- Department
of Chemistry, Faculty of Science, University
of Zanjan, Zanjan 45371-38791, Iran
- Department
of Biotechnology, Research Institute of Modern Biological Techniques
(RIMBT), University of Zanjan, Zanjan 45371-38791, Iran
- ,
| | - Sami Sajjadifar
- Department
of Chemistry, Payame Noor University, PO BOX Tehran 19395-4697, Iran
| | - Hamideh Aghahossieini
- Department
of Chemistry, Faculty of Science, University
of Zanjan, Zanjan 45371-38791, Iran
| | - Aram Rezaei
- Nano
Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 1673-67145, Iran
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7
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New mixed ligand oxidovanadium(IV) complexes: Solution behavior, protein interaction and cytotoxicity. J Inorg Biochem 2022; 233:111853. [DOI: 10.1016/j.jinorgbio.2022.111853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 12/21/2022]
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8
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Feng X, Wu W, Gu Y, Zhang L, Wang S, Zhao J, Ji J, Shi D, You Z. A centipede like thiocyanate-bridged muti-nuclear copper(I/II) complex derived from 2-(((2-(dimethylamino)ethyl)imino)methyl)-5-fluorophenol with urease inhibitory activity. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2062232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xinhui Feng
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Wenlong Wu
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, PR China
| | - Yuqing Gu
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Li Zhang
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Shiyi Wang
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Jie Zhao
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Jing Ji
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Dahua Shi
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, PR China
| | - Zhonglu You
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
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Liu C. Solvent-induced synthesis and crystal structures of copper(II) complexes derived from 4-chloro-2-[(2-hydroxymethylphenylimino)methyl]phenol with antibacterial activity. J COORD CHEM 2022. [DOI: 10.1080/00958972.2021.2002851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Cheng Liu
- School of Medicine, Huaqiao University, Quanzhou, P. R. China
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Zandvakili T, Fatemi SJ, Ebrahimipour SY, Ebrahimnejad H, Dusek M, Eigner V. Synthesis, Structural Elucidation, In Vitro Antibacterial Activity and Antioxidant Property of a Novel Oxo‐Vanadium(V) Dimer Complex Incorporating Deferasirox Ligand. ChemistrySelect 2021. [DOI: 10.1002/slct.202102776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Tayebe Zandvakili
- Department of Chemistry, Faculty of Science Shahid Bahonar University of Kerman Kerman Iran
| | - S. Jamil Fatemi
- Department of Chemistry, Faculty of Science Shahid Bahonar University of Kerman Kerman Iran
| | - S. Yousef Ebrahimipour
- Department of Chemistry, Faculty of Science Shahid Bahonar University of Kerman Kerman Iran
| | - Hadi Ebrahimnejad
- Department of Veterinary Medicine Shahid Bahonar University of Kerman Kerman Iran
| | - Michal Dusek
- Institute of Physics ASCR, v.v.i. Na Slovance 2 182 21 Praha 8 Czech Republic
| | - Vaclav Eigner
- Institute of Physics ASCR, v.v.i. Na Slovance 2 182 21 Praha 8 Czech Republic
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