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Patra A, Das A, Sarkar A, Gómez-García CJ, Sinha C. Tetranuclear Ni II-Mannich base complex with oxygenase, water splitting and ferromagnetic and antiferromagnetic coupling properties. Dalton Trans 2024. [PMID: 39072528 DOI: 10.1039/d4dt01425a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
A new Mannich base (2-(4-(2-hydroxy-3-methoxy-5-methylbenzyl)-piperazin-1-yl)methyl)-6-methoxy-4-ethylphenol (H2L) and its tetranuclear NiII complex [Ni4L2(μ1,1-Cl)2(H2O)4]Cl2 (compound 1) are characterised using single-crystal X-ray diffraction measurements. Compound 1 contains four different NiII centres in a rhombus-like structure. Two Ni atoms (Ni1 and Ni2) have a NiN2O4 coordination sphere, while the other two (Ni3 and Ni4) have a NiO4Cl2 coordination environment and Ni-Cl-Ni bridges connect them. Ni1 and Ni2 are linked to Ni3 and Ni4 by phenoxide bridges. Variable temperature magnetic susceptibility measurements of 1 indicate the presence of alternating antiferromagnetic coupling (J1 = -6.6(1) cm-1) through the phenoxide bridge along the sides of the rhombus and ferromagnetic coupling (J2 = 8.4(1) cm-1) through the double Cl bridge along the short diagonal of the rhombus with a zero-field splitting of |D| = 2.7(1) cm-1. Compound 1 shows oxidase (catecholase-like and phenoxazinone synthase-like) activity. The oxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) gives 3,5-di-tert-butylquinone (3,5-DTBQ) and H2O2 and the oxidation of o-aminophenol (OAP) produces 2-aminophenoxazin-3-one (APX) and H2O with turnover numbers of 28.32 and 17.52 h-1, respectively, under aerobic conditions. A mechanism for the oxidase activity catalysed by compound 1 is proposed in line with ESI-mass spectrometry, EPR spectroscopy, and electrochemical data. The reaction involves the cleavage of the tetranuclear Ni4-core to form a mononuclear NiII complex in the presence of the substrate (3,5-DTBC/OAP). This NiII complex is reduced to NiI with the concomitant oxidation of the substrate (3,5-DTBQ/APX). Formation of a radical intermediate is confirmed using EPR. In the catecholase-like activity, O2 is reduced to H2O2 while in the phenoxazinone synthase-like activity O2 produces H2O. Compound 1 participated in oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in a strongly basic medium with an onset potential of 418 mV and a Tafel slope of 121 mV dec-1 for OER and an onset potential of 477 mV and Tafel slope of 146 mV dec-1 for HER.
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Affiliation(s)
- Arka Patra
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Avijit Das
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Abhimanyu Sarkar
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Carlos J Gómez-García
- Departmento de Química Inorgánica, Universidad de Valencia, C/Dr. Moliner 50, 46100 Burjasot, Valencia, Spain
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Durigon DC, Glitz VA, Pimenta BF, Guedes AMV, Silva JVO, Bella Cruz CC, Andrade LM, Pereira-Maia EC, Mikcha JMG, Bella Cruz A, Xavier FR, Terenzi HF, Poneti G, Ribeiro RR, Nordlander E, Caramori GF, Bortoluzzi AJ, Peralta RA. The influence of thioether-substituted ligands in dicopper(II) complexes: Enhancing oxidation and biological activities. J Inorg Biochem 2024; 256:112573. [PMID: 38678913 DOI: 10.1016/j.jinorgbio.2024.112573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/15/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
This paper describes the synthesis, structural analysis, as well as the magnetic and spectroscopic characterizations of three new dicopper(II) complexes with dinucleating phenol-based ligands containing different thioether donor substituents: aromatic (1), aliphatic (2) or thiophene (3). Temperature-dependent magnetometry reveals the presence of antiferromagnetic coupling for 1 and 3 (J = -2.27 cm-1 and -5.01 cm-1, respectively, H = -2JS1S2) and ferromagnetic coupling for 2 (J = 5.72 cm-1). Broken symmetry DFT calculations attribute this behavior to a major contribution from the dz2 orbitals for 1 and 3, and from the dx2-y2 orbitals for 2, along with the p orbitals of the oxygens. The bioinspired catalytic activities of these complexes related to catechol oxidase were studied using 3,5-di-tert-butylcatechol as substrate. The order of catalytic rates for the substrate oxidation follows the trend 1 > 2 > 3 with kcat of (90.79 ± 2.90) × 10-3 for 1, (64.21 ± 0.99) × 10-3 for 2 and (14.20 ± 0.32) × 10-3 s-1 for 3. The complexes also cleave DNA through an oxidative mechanism with minor-groove preference, as indicated by experimental and molecular docking assays. Antimicrobial potential of these highly active complexes has shown that 3 inhibits both Staphylococcus aureus bacterium and Epidermophyton floccosum fungus. Notably, the complexes were found to be nontoxic to normal cells but exhibited cytotoxicity against epidermoid carcinoma cells, surpassing the activity of the metallodrug cisplatin. This research shows the multifaceted properties of these complexes, making them promising candidates for various applications in catalysis, nucleic acids research, and antimicrobial activities.
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Affiliation(s)
- Daniele C Durigon
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Vinícius A Glitz
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Beatriz F Pimenta
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Anderson M V Guedes
- Departamento de Química, Universidade Federal do Rio de Janeiro, UFRJ, CEP 21941-901 Rio de Janeiro, RJ, Brazil
| | - João V O Silva
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, UEM, CEP 87020-900 Maringá, PR, Brazil
| | - Catarina C Bella Cruz
- Centro de Ensino em Ciências da Saúde, Universidade do Vale do Itajaí, Univali, CEP 88302-901 Itajaí, SC, Brazil
| | - Lídia M Andrade
- Departamento de Genética, Ecologia e Evolução and Departamento de Física, Universidade Federal de Minas Gerais, UFMG, CEP 31270-901 Belo Horizonte, MG, Brazil
| | - Elene C Pereira-Maia
- Departamento de Química, Universidade Federal de Minas Gerais, UFMG, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Jane M G Mikcha
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, UEM, CEP 87020-900 Maringá, PR, Brazil
| | - Alexandre Bella Cruz
- Centro de Ensino em Ciências da Saúde, Universidade do Vale do Itajaí, Univali, CEP 88302-901 Itajaí, SC, Brazil
| | - Fernando R Xavier
- Departamento de Química, Universidade do Estado de Santa Catarina, UDESC, CEP 89219-710 Joinville, SC, Brazil
| | - Hernán F Terenzi
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Giordano Poneti
- Departamento de Química, Universidade Federal do Rio de Janeiro, UFRJ, CEP 21941-901 Rio de Janeiro, RJ, Brazil; Dipartimento di Scienze Ecologiche e Biologiche, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Ronny R Ribeiro
- Departamento de Química, Universidade Federal do Paraná, UFPR, CEP 81531-980 Curitiba, PR, Brazil
| | - Ebbe Nordlander
- Chemical Physics, Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Giovanni F Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Adailton J Bortoluzzi
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil.
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Diallo AS, Thiam IE, Gueye-Ndiaye M, Dieng M, Orton J, Simon C, Gaye M. Tetranuclear copper(II) complex of 2-hydroxy- N, N′-bis[1-(2-hydroxyphenyl)ethylidene]propane-1,3-diamine. ACTA CRYSTALLOGRAPHICA SECTION E CRYSTALLOGRAPHIC COMMUNICATIONS 2022; 78:349-353. [PMID: 35492279 PMCID: PMC8983967 DOI: 10.1107/s2056989022002225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/24/2022] [Indexed: 11/25/2022]
Abstract
In the title Schiff base tetranuclear copper(II) complex, two discrete environments are present in the structure: CuNO4 and CuNO3. Two copper(II) cations are situated in distorted square-pyramidal environment, while two copper(II) cations are located in a slightly square-planar geometry. One bridging acetate group acting in an η1:η1-μ2-mode connects two copper(II) ions, while another bridging acetate group connects three copper(II) ions in an η1:-η2–μ3-mode. The title molecular structure, namely, (μ3-acetato)(μ2-acetato)bis(μ3-1,3-bis{[1-(2-oxidophenyl)ethylidene]amino}propan-2-olato)tetracopper(II) monohydrate, [Cu4(C19H19N2O3)2(CH3CO2)2]·H2O, corresponds to a non-symmetric tetranuclear copper complex. The complex exhibits one ligand molecule that connects two copper CuII metal centres via its ethanolato oxygen anion acting in a μ2-mode and one ligand molecule that connects three copper CuII metal centres via its ethanolato oxygen anion acting in a μ3-mode. One bridging acetate group acting in an η1:η1-μ2-mode connects two copper(II) ions while another bridging acetate group connects three copper(II) ions in an η1:-η2-μ3-mode. A chair-like Cu3O3 structure is generated in which the two CuO4N units are connected by one μ2-O ethanolate oxygen atom. These two units are connected respectively to the CuO3N unit via one μ3-O ethanolate oxygen atom and one μ2-O atom from an acetate group. The μ3-O atom also connects one of the CuO4N units and the CuO3N unit to another CuO3N unit, which is out of the chair-like structure. Each of the two pentacoordinated CuII cations has a distorted NO4 square-pyramidal environment. The geometry of each of the two CuNO3 units is best described as a slightly square-planar environment. A series of intramolecular O—H⋯O hydrogen bonds is observed. In the crystal, the units are connected by intermolecular C—H⋯O and O—H⋯O hydrogen bonds, thus forming sheets parallel to the ac plane
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Salunke PS, Puranik AA, Kulkarni ND. Histamine derived dimer of µ-Chlorido-µ-Phenoxido Dicopper(II) complex as a Potential Enzyme Mimic with Catecholase activity. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115700] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Mukherjee S, Hansda S, Nandi S, Chakraborty T, Samanta D, Acharya K, Das D. Azide-mediated unusual in situ transformation of Mannich base to Schiff-Mannich base and isolation of their Cu(II) complexes: crystal structure, theoretical inspection and anticancer activities. Dalton Trans 2021; 50:13374-13386. [PMID: 34473159 DOI: 10.1039/d1dt01740c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new "end-off" compartmental Mannich ligand (HL1) namely 3-((bis(2-methoxyethyl)amino)methyl)-5-bromo-2-hydroxybenzaldehyde containing two methoxyethyl pendant arms and one-CHO functionality has been synthesized through conventional C-C and C-N coupling reactions. On treatment with Cu(ClO4)2, HL1 yields a dinuclear μ-phenolatocopper(II) complex having the molecular formula [Cu2(L1)2](ClO4)2(H2O)1.5 (1). Surprisingly, the ligand HL1 is radically transformed into a new asymmetric Schiff-Mannich base ligand (HLF) in the presence of NaN3 and Cu(ClO4)2 forming a unique dinuclear centro-symmetric Cu(II) complex [Cu(LF)]2 (2) as evident from single-crystal X-ray diffraction (SCXRD) analysis. A probable mechanistic rationalization has been proposed on the basis of theoretical calculations, which suggests systematic fragmentation of HL1 in the presence of azide residue and re-condensation of the fragmented units to yield the final Cu-HLF complex (2). SCXRD analysis portrays a large inter-metallic distance in complex 2 in comparison with complex 1 (5.493 vs. 2.989 Å, respectively) along with other distinct structural features. After physicochemical characterization both the complexes have been exploited to evaluate their possible anticancer proficiency on lung adenocarcinoma cell line (A549). Complex 1 distinctly impeded the proliferation of lung adenocarcinoma cells in a dose-dependent manner more efficiently than complex 2. Due to the behavior of complex 1 as potential therapeutics, cellular transformations of A549 cells have been systematically investigated. As evidenced from various in vitro experiments, the cell death mechanism triggered by complex 1 turned out to be apoptosis, as indicated by the DNA fragmentation, chromatin condensation, membrane blebbing and imbalanced cell cycle distribution as well as retard migration in A549 cells.
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Affiliation(s)
- Somali Mukherjee
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India.
| | - Sili Hansda
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India.
| | - Sudeshna Nandi
- Molecular and Applied Mycology and Plant Pathology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Tonmoy Chakraborty
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India.
| | - Debabrata Samanta
- Department of Chemistry, Dukhulal Nibaran Chandra (D.N.C.) College, Aurangabad, West Bengal 742201, India
| | - Krishnendu Acharya
- Molecular and Applied Mycology and Plant Pathology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Debasis Das
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India.
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Thio Y, Vittal JJ. Catecholase-like activity in 2D MOFs: Oxidation of 3,5-DTBC by two Cu(II) 2D MOFs of reduced Schiff base ligands. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Zahirović A, Roca S, Višnjevac A, Kahrović E. Ruthenium organometallics of chloro-substituted 2′-hydroxychalcones – A story of catecholase biomimetics beyond copper. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Tuning the catecholase activity of bis(pyrazolyl)methane-based copper(II) complexes by substitutions of the ligand core: unraveling a dual O2/H2O2 oxidation mechanism. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119507] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Indira S, Vinoth G, Bharathi M, Bharathi S, Kalilur Rahiman A, Shanmuga Bharathi K. Catechol oxidase and phenoxazinone synthase mimicking activities of mononuclear Fe(III) and Co(III) complexes of amino-bis(phenolate)-based mixed ligands: Synthesis, spectral and electrochemical studies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.118988] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sheoran M, Bhar K, Jain S, Rana M, Khan TA, Sharma AK. Phenoxo-bridged dicopper complexes: Syntheses, characterizations, crystal structures and catecholase activity. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cao S, Cheng R, Wang D, Zhao Y, Tang R, Yang X, Chen J. Dinuclear copper(II) complexes of “end-off” bicompartmental ligands: Alteration of the chelating arms on ligands to regulate the reactivity of the complexes towards DNA. J Inorg Biochem 2019; 192:126-139. [DOI: 10.1016/j.jinorgbio.2018.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 12/23/2018] [Accepted: 12/24/2018] [Indexed: 01/08/2023]
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Joy SR, Trufan E, Smith MD, Puscas C, Silaghi-Dumitrescu RL, Semeniuc RF. An unexpected μ4-oxido-bridged tetranuclear Cu(II) inverse coordination complex of a heptadentate bis(pyrazolyl)methane-based ligand: Synthesis, structure, spectroscopic properties, and catecholase activity. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Biomimetics of mononuclear and dinuclear Cu(II) and Fe(III) complexes of a newly synthesized piperazyl Mannich base with or without thiocyanate towards catechol. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2291-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mahmoud AG, Guedes da Silva MFC, Śliwa EI, Smoleński P, Kuznetsov ML, Pombeiro AJL. Copper(II) and Sodium(I) Complexes based on 3,7-Diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane-5-oxide: Synthesis, Characterization, and Catalytic Activity. Chem Asian J 2018; 13:2868-2880. [DOI: 10.1002/asia.201800799] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/20/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Abdallah G. Mahmoud
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
- Department of Chemistry; Faculty of Science; Helwan University; Ain Helwan 11795 Cairo Egypt
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Ewelina I. Śliwa
- Faculty of Chemistry; University of Wrocław; Ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Piotr Smoleński
- Faculty of Chemistry; University of Wrocław; Ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Maxim L. Kuznetsov
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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