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Efficient Epoxidation of Olefins by Silica Supported Dioxidomolybdenum(VI) Coordination Compounds. Catal Letters 2023. [DOI: 10.1007/s10562-023-04300-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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New Dinuclear Macrocyclic Copper(II) Complexes as Potentially Fluorescent and Magnetic Materials. Int J Mol Sci 2023; 24:ijms24033017. [PMID: 36769351 PMCID: PMC9918273 DOI: 10.3390/ijms24033017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/09/2023] Open
Abstract
Two dinuclear copper(II) complexes with macrocyclic Schiff bases K1 and K2 were prepared by the template reaction of (R)-(+)-1,1'-binaphthalene-2,2'-diamine and 2-hydroxy-5-methyl-1,3-benzenedicarboxaldehyde K1, or 4-tert-butyl-2,6-diformylphenol K2 with copper(II) chloride dihydrate. The compounds were characterized by spectroscopic methods. X-ray crystal structure determination and DFT calculations confirmed their geometry in solution and in the solid phase. Moreover, intermolecular interactions in the crystal structure of K2 were analyzed using 3D Hirshfeld surfaces and the related 2D fingerprint plots. The magnetic study revealed very strong antiferromagnetic CuII-CuII exchange interactions, which were supported by magneto-structural correlation and DFT calculations conducted within a broken symmetry (BS) framework. Complexes K1 and K2 exhibited luminescent properties that may be of great importance in the search for new OLEDs. Both K1 and K2 complexes showed emissions in the range of 392-424 nm in solutions at various polarities. Thin materials of the studied compounds were deposited on Si(111) by the spin-coating method or by thermal vapor deposition and studied by scanning electron microscopy (SEM/EDS), atomic force microscopy (AFM), and fluorescence spectroscopy. The thermally deposited K1 and K2 materials showed high fluorescence intensity in the range of 318-531 nm for K1/Si and 326-472 nm for the K2/Si material, indicating that they could be used in optical devices.
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Majumder A, Dutta N, Sk S, Bera M. Synthesis, characterization and arsenate binding events of new mononuclear copper(II) complexes. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Fouad R, Shebl M, Saif M, Gamal S. Novel copper nano-complex based on tetraazamacrocyclic backbone: Template synthesis, structural elucidation, cytotoxic, DNA binding and molecular docking studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132021] [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]
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Sethupathi M, Thulasinathan B, Sengottuvelan N, Ponnuchamy K, Perdih F, Alagarsamy A, Karthikeyan M. Macrocyclic "tet a"-Derived Cobalt(III) Complex with a N, N'-Disubstituted Hexadentate Ligand: Crystal Structure, Photonuclease Activity, and as a Photosensitizer. ACS OMEGA 2022; 7:669-682. [PMID: 35036733 PMCID: PMC8756598 DOI: 10.1021/acsomega.1c05306] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
A cobalt(III) complex, [Co(L)]Cl (complex 1, where L = 1,8-[N,N-bis{(3-formyl-2-hydroxy-5-methyl)benzyl}]-1,4,8,11-tetraaza-5,5,7,12,12,14-hexamethylcyclotetradecane) with distorted octahedral geometry has been synthesized and characterized using various spectroscopic techniques. The structure of the ligand has remarkably rich hydrogen intermolecular interactions such as H···H, H···C/C···H, and H···O/O···H that vary with the presence of the metal ion, and the structure of complex 1 has Cl···H interactions; this result has been proved by Hirshfeld surface and two-dimensional (2D) fingerprint maps analyses. The complex exhibits a quasi-reversible Co(III)/Co(II) redox couple with E 1/2 = -0.76 V. Calf thymus DNA (CT DNA) binding abilities of the ligand and complex 1 were confirmed by spectroscopic and electrochemical analyses. According to absorption studies, the ligand and complex 1 bind to CT DNA via intercalative binding mode, with intrinsic binding strengths of 1.41 × 103 and 8.64 × 103 M-1, respectively. A gel electrophoresis assay shows that complex 1 promotes the pUC19 DNA cleavage under dark and light irradiation conditions. Complex 1 has superior antimicrobial activity than the ligand. The cytotoxicity of complex 1 was tested against MDA-MB-231 breast cancer cells with values of IC50 of 1.369 μg mL-1 in the dark and 0.9034 μg mL-1 after light irradiation. Besides, cell morphological studies confirmed the morphological changes with AO/EB dual staining, reactive oxygen species (ROS) staining, mitochondria staining, and Hoechst staining on MDA-MB-231 cancer cells by fluorescence microscopy. Complex 1 was found to be a potent antiproliferative agent against MDA-MB-231 cells, and it can induce mitochondrial-mediated and caspase-dependent apoptosis with activation of downregulated caspases. The biotoxicity assay of complex 1 on the development of Artemia nauplii was evaluated at an IC50 value of 200 μg mL-1 and with excellent biocompatibility.
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Affiliation(s)
- Murugan Sethupathi
- Department
of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | | | - Nallathambi Sengottuvelan
- Department
of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India
- Department
of Chemistry (DDE), Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Kumar Ponnuchamy
- Food
Chemistry and Molecular Cancer Biology Laboratory, Department of Animal
Health and Management, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Franc Perdih
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, 1000 Ljubljana, Slovenia
| | - Arun Alagarsamy
- Department
of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Muthusamy Karthikeyan
- Pharmacogenomics
and Computational Biology Laboratory, Department of Bioinformatics, Alagappa University, Karaikudi 630004, Tamil
Nadu, India
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Majumder A, Dutta N, Das A, Carrella L, Bera M. Exploring new water soluble bridged dicopper(II) assemblies: Synthesis, structure, spectroscopic characterization, properties, and their interactions with d-glucosamine. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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