Research Article: Bis(methacrylato-κO)bis­(2,4,6-trimethyl­pyridine-κN)copper(II)

Date Published: April 01, 2012

Publisher: International Union of Crystallography

Author(s): Ejaz, Islam Ullah Khan, Alina Murtaza, William T. A. Harrison.


In the monomeric title complex, [Cu(C4H5O2)2(C8H11N)2], the CuII atom lies on a centre of inversion. Its coordination by two substituted pyridine ligands and two carboxyl­ate anions leads to a slightly distorted trans-CuN2O2 square-planar geometry. The dihedral angle between the mean planes of the pyridine (py) ring and the carboxyl­ate group is 74.71 (7)°. The dihedral angles between the planar CuN2O2 core and the py ring and carboxyl­ate plane are 67.72 (5) and 89.95 (5)°, respectively. Based on the refined C=C and C—C bond lengths, the terminal =CH2 and –CH3 groups of the carboxyl­ate anion may be disordered, but the disorder could not be resolved in the present experiment. Several intra­molecular C—H⋯O inter­actions occur. In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds, generating chains propagating in [100].

Partial Text

For the crystal structures of related monomeric complexes containing a trans-CuN2O2 core, see: Borel et al. (1981 ▶); Heimer & Ahmed (1982 ▶); Jedrzejas et al. (1994 ▶).