Crystal structure of bis(pivaloylhydroxamato-κ2 O,O′)copper(II)

Abstract

Reaction of copper(II) nitrate with pivaloylhydroxamic acid yielded the title compound, [Cu(pivHA)2] (where pivHA− is pivaloyl hydroxamate, C5H10NO2). The centrosymmetric mononuclear complex consists of a CuII ion, which is located on a center of inversion, with two coordinated pivaloyl hydroxamate monoanions. The CuII ion has a square-planar coordination environment consisting of four O atoms – two carbonyl O atoms and two hydroxamate O atoms from two hydroxamate pivHA− ligands. The pivHA− anions are coordinated to copper(II) in a trans-mode, forming two five-membered O,O′-chelate rings.