Dichlorido(2-chloro-9-mesityl-1,10-phenanthroline-κ² N,N′)cobalt(II) dichloro-methane hemisolvate

The title compound, [CoCl2(C21H17ClN2)]·0.5CH2Cl2, crystallizes from dichloro-methane as a 2:1 solvate [CoCl2L]2·CH2Cl2 (L is 2-chloro-9-mesityl-1,10-phenanthroline). There are two independent CoCl2 L mol-ecules in the asymmetric unit and both mol-ecules have similar conformations. They are connected by a weak C - H⋯π inter-action involving the mesityl ring. The cobalt center is four-coordinated by the two N-atom donors of the bidentate ligand and two chloride ions in a distorted tetra-hedral geometry. The packing of the mol-ecules is stabilized by weak slipped π-π stacking inter-actions between symmetry-related phenanthroline groups.