Popis: |
The new copper(II)–nitrite complex [CuII(L)(ONO)]ClO4 (2), L=[(bis(1-methylimidazol-2-yl)methyl)(2-(pyridyl-2-yl)ethyl)amine] was synthesized and characterized by cyclic voltammetry, UV–Vis spectroscopy, X-band EPR and X-ray crystallography. Complex 2 crystallizes in the monoclinic system, space group P21/n and has the metal center in a somewhat distorted square pyramidal geometry, with three nitrogen atoms from the chelate ligand and one nitrite ion outlining the basal plane. One imidazole nitrogen from the tripodal molecule is at the apical position at 2.158(2) A from the metal. Spectrophotometric and electrochemical experiments in water solution reveal that complex 2 readily releases the nitrite ligand in this medium (t1/2 |