Bis(2-ethoxycarbonylamino-6-methylpyridine N-oxide)copper(II)

The complex has a distorted square-planar structure with bidentate ligands chelated to Cu in a cis (N,O:O',N') arrangement. The average distance from Cu to N is 1.929 (4) A and from Cu to 0 is 1.906 (4) A. The N-Cu-N' angle of 110.9 (1) o differs markedly from the O-Cu-O' angle of 91.6(1) o because of large substituents attached to N. Some measure of the deviation from idealized square-planar coordination is indicated by angles of 154.9 (1) and 157.9 (2) o between nominally trans N and O donor atoms spanning Cu. Molecular packing in the crystal results in parallel alignment of neighboring aromatic rings