title: Structural and spectropscopic studies of a three-dimensional hydrogen-bonded copper(II) complex: aqua[bis(pyridin-2-ylcarbonyl)amidato]cyanidocopper(II).
abstract: The preparation and X-ray and spectroscopic studies of the title copper(II) complex, [Cu(C12H8N3O2)(CN)(H2O)], are reported. The Cu(II) cation is five-coordinated, forming a distorted square-planar pyramid with an Addison τ parameter of 0.14. The UV-vis spectrum shows a d-d transition of the Cu(II) centre at 638 nm, and the electron paramagnetic resonance (EPR) spectrum confirms that the Cu(II) cation has an axial symmetry coordination and that the unpaired electrons occupy the d(x(2)-y(2)) orbital. Cyclic voltammetric studies show two irreversible oxidation and reduction peaks.
authors: Weifang Medical University, Weifang City, Shandong Province, People's Republic of China.
authors: Jiang-Yun
authors: JY
authors: Wang
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008024:Ligands; D010084:Oxidation-Reduction; D056951:Photoelectron Spectroscopy
chemical_list: D056831:Coordination Complexes; D008024:Ligands; C000598901:aqua(bis(pyridin-2-ylcarbonyl)amidato)cyanidocopper(II); D003300:Copper
keywords: EPR spectrum; copper(II) complex; crystal structure; cyclic voltammetry; hydrogen bonding; square-pyramidal geometry