Crystal and molecular structure of bis(N-n-decyl-o-hydroxyacetophen-oniminato) copper(II)

Abstract

Thetitlecompound crystallizes in the triclinic space groupP, with a= 7.990(8),b= 17.963(10),c= 6.689(10)Å. α=80.1(6), β=110.9(4),γ=100.0(6)°,Z= 1. The structure was solved by the heavy-atom method and refined to R 0.083 for 1 753 observed visually estimated data. Copper is four-co-ordinate planar with Cu–0 1.975 and Cu–N 2.047 Å. In the co-ordination polyhedron copper is displaced from the o-hydroxyacetophenone plane by 1 .1 7 Å giving rise to a ‘step’ between the two halves of the molecule. The plane of the n-decyl chain makes a dihedral angle of 106° with the co-ordination plane. The carbon atoms of this chain have no contacts sufficiently close to the copper atom to affect its electronic configuration, but the presence of methyl and methylenc groups causes distortion in the chelate ring.