Spectrochim Acta A Mol Biomol Spectrosc
Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388 120, Gujarat, India. Electronic address:
Published: February 2015
The mononuclear copper(II) complexes with P, O-donor ligand and different fluoroquinolones have been synthesized and characterized by elemental analysis, electronic spectra, TGA, EPR, FT-IR and LC-MS spectroscopy. An antimicrobial efficiency of the complexes has been tested against five different microorganisms in terms of minimum inhibitory concentration (MIC) and displays very good antimicrobial activity. The binding strength and binding mode of the complexes with Herring Sperm DNA (HS DNA) have been investigated by absorption titration and viscosity measurement studies. The studies suggest the classical intercalative mode of DNA binding. Gel electrophoresis assay determines the ability of the complexes to cleave the supercoiled form of pUC19 DNA. Synthesized complexes have been tested for their SOD mimic activity using nonenzymatic NBT/NADH/PMS system and found to have good antioxidant activity. All the complexes show good cytotoxic and in vitro antimalarial activities.
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http://dx.doi.org/10.1016/j.saa.2014.10.103 | DOI Listing |
Chem Asian J
March 2025
National Institute of Technology Rourkela, Chemistry, NIT Campus, 769008, Rourkela, INDIA.
Here, two mixed-ligand mononuclear [Cu(L1)py] (1), [Cu(L2)Him] (2) and one dinuclear copper(II) complex [Cu2(L3)2(DMSO)(MeOH)] (3) were isolated in solid state and characterized through SC-XRD.- Herein, we highlight the solution behavior of these complexes in solution medium through HRMS and ESR. Though the complexes maintain their integrity with respect to the ligand coordination, there is solvent or co-ligand exchange and generation of both [Cu(L)(py/Him)] or [Cu(L)(H2O)] species.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
March 2025
Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA 01610, USA.
Reaction of copper(II) bromide with 3,5-di-chloro-pyridine (3,5-Clpy) or 3,5-di-methyl-pyridine (3,5-Mepy) led to the isolation of the coordination polymers -poly[[bis-(3,5-di-chloro-pyridine)-copper(II)]-di-μ-bromido], [CuBr(CHClN)] or [CuBr(3,5-Clpy)] (), and -poly[[bis-(3,5-di-methyl-pyridine)-copper(II)]-di-μ-bromido], [CuBr(CHN)] or [CuBr(3,5-Mepy)] (), respectively. The structures are characterized by bibromide-bridged chains [(av.) = 3.
View Article and Find Full Text PDFDalton Trans
March 2025
Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
This paper addresses the synthesis, characterization, DNA binding, cleavage, and antiproliferative activity studies of a series of heteroleptic mononuclear copper(II) complexes [Cu(L)(bpy)](ClO), {1}; [Cu(L)(phen)](ClO), {2}; and [Cu(L)(Mephen)](ClO), {3} derived from different polypyridyl ligands, where in the complex architecture, one 2,6-bis(1-methyl-1-benzo[]imidazol-2-yl)pyridine(Mebzimpy) (L) moiety is connected to the central Cu metal in a tridentate fashion and the bidentate co-ligands are 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen) and 2,9-dimethyl-1,10-phenanthroline (Mephen). All the synthesized complexes were characterized using various spectroscopic and analytical methods, along with the single-crystal X-ray diffraction (SCXRD) technique. The complexes crystallize in a penta-coordinated distorted square pyramidal geometry.
View Article and Find Full Text PDFBioconjug Chem
March 2025
Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Inorgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
Cu(II) coordination complexes are emerging as promising anticancer agents due to their ability to induce oxidative stress through reactive oxygen species (ROS) generation. In this study, we synthesized and characterized two novel Cu(II) metallopeptide systems, /Cu(II) and /Cu(II), derived from the oligocationic bipyridyl cyclopeptides and and designed to enhance the transport of Cu(II) into cells and increase ROS levels. Spectroscopic and electrochemical analyses confirmed the formation of stable metallopeptide species in aqueous media.
View Article and Find Full Text PDFJ Chem Phys
March 2025
Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy.
Despite the capability of bis-(thio)carbohydrazones to coordinate metals and the remarkable biological properties of the resulting complexes, no general information is known about their individual behavior in solution. This study is focused on two recently synthesized compounds, a bis-thiocarbohydrazone (bis-TCH) and a bis-carbohydrazone (bis-CH) isolated as sodium salts, that have shown chelating properties toward copper(II) and zinc(II) metal ions along with promising cytotoxic activity. In this work, an integrated theoretical-computational, nuclear magnetic resonance (NMR), and vibrational characterization of both bis-TCH and bis-CH anions in a non-protic solvent (dimethylsulfoxide) is presented to better elucidate their properties.
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