metal-organic compounds
In the crystal structure of the title compound, [CoCl2(C7H12N2)2], molecular units are formed by coordination of the unsubstituted N atoms of two tert-butyl-substituted imidazole molecules and two chloride ligands, which distinguishes the complex from structures of imidazolium-based dications with tetrachloridocobaltate dianions. There are two crystallographically independent molecules in the asymmetric unit, related by a noncrystallographic inversion centre.
metal-organic compounds
The title platinum(II) complex, [Pt(C10H8BrN2)(C5H7O2)], has a bidentate cyclometallated phenylimidazolylidene ligand and an acetylacetonate spectator ligand, which form a distorted square-planar coordination environment around the PtII centre. In the solid state, the molecules are oriented in a parallel fashion by intermolecular hydrogen bonding and π–π and C—Hπ interactions, while close PtPt contacts are not observed. The structure is only the second example for this new class of compounds.