Synthesis, characterization and thermal properties of 1,10-phenanthroline mixed-ligand complexes of cobalt(II) and copper(II): metal-mediated transformations of the dicyanamide ion

The reaction of 1,10-phenanthroline and dicyanamide ligands with Cu(II) and Co(II) nitrates afforded the complexes [Cu(phen)(BMCA)](NO 3 )] ( 1 ) and [Co(phen) 2 (NO 3 )](dcg-)·(H 2 O) ( 2 ). The dicyanamide anion was transformed in 1 and 2 to bis(methoxycarbimido)aminato (BMCA) and dicyanoguanidina...

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Veröffentlicht in:Chemical papers 2020-09, Vol.74 (9), p.3003-3016
Hauptverfasser: Eni, Donatus B., Yufanyi, Divine M., Nono, Jean H., Tabong, Che D., Agwara, Moise O.
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Yufanyi, Divine M.
Nono, Jean H.
Tabong, Che D.
Agwara, Moise O.
description The reaction of 1,10-phenanthroline and dicyanamide ligands with Cu(II) and Co(II) nitrates afforded the complexes [Cu(phen)(BMCA)](NO 3 )] ( 1 ) and [Co(phen) 2 (NO 3 )](dcg-)·(H 2 O) ( 2 ). The dicyanamide anion was transformed in 1 and 2 to bis(methoxycarbimido)aminato (BMCA) and dicyanoguanidinate (dcg) anions, respectively. The complexes were characterized by elemental analysis, infrared spectroscopy and ultraviolet–visible spectroscopy, magnetic susceptibility measurement and X-ray crystallography. Both complexes crystallize in the monoclinic crystal system, and the structures are stabilized by extended hydrogen bonding networks as well as aromatic π–π stacking interactions. The thermal and antimicrobial properties of the complexes have also been evaluated. Density functional theory calculations were also performed in order to gain insights into the molecular interactions in the synthesized compounds and to predict some of their electronic properties.
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subjects Anions
Biochemistry
Biotechnology
Chemical synthesis
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Coordination compounds
Copper
Copper compounds
Crystal structure
Crystallography
Density functional theory
Hydrogen bonding
Industrial Chemistry/Chemical Engineering
Infrared analysis
Ligands
Magnetic permeability
Materials Science
Medicinal Chemistry
Molecular interactions
Original Paper
Spectrum analysis
Thermodynamic properties
title Synthesis, characterization and thermal properties of 1,10-phenanthroline mixed-ligand complexes of cobalt(II) and copper(II): metal-mediated transformations of the dicyanamide ion
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