A 2:1 cocrystal of the cis and trans isomers of bis-[1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato(1-)-κO,O']bis-(4-phenyl-pyridine N-oxide-κO)copper(II).

Abstract

The title compound is a co-crystal of the cis and trans isomers, namely cis-bis­[1,1,1,5,5,5-hexa­fluoro­pentane-2,4-dionato(1−)-κ2 O,O′]bis­(4-phenyl­pyridine N-oxide-κO)copper(II)–trans-bis­[1,1,1,5,5,5-hexa­fluoro­pentane-2,4-dionato(1−)-κ2 O,O′]bis(4-phenyl­pyridine N-oxide-κO)copper(II) (2/1), [Cu(C5HF6O2)2(C11H9NO)2]. In both isomers, the coordination geometry of the Cu2+ atom is octa­hedral, exhibiting typical Jahn–Teller distortion. The metal atom of the trans isomer is located on an inversion centre. In the cis isomer, the phenyl ring in one 4-phenyl­pyridine N-oxide ligand is disordered over two orientations in a 1:1 ratio. In the crystal, weak inter­molecular C—H⋯F and C—H⋯O contacts establish connections between the cis and trans isomers.