The First Example of a cis-Platinum Analogue with Two Directly Bridged Imidazoles: [Pt(mimim)Cl₂].Et₄NCl

The crystal structure of the title compound, tetraethylammonium dichloro(1-methyl-2,2'-biimidazole-N³,N³)platinum(II) chloride, (C₈H₂₀N)[PtCl₂(C₇H₈N₄)]Cl, has been determined from single-crystal X-ray diffraction data. The square-planar coordination sphere of the platinum consists of two N atoms of the biimidazole ligand and two Cl atoms in a cis arrangement. The average Pt-N and Pt-Cl distances are 2.017 and 2.309 Å, respectively. In the asymmetric unit, one Et₄NCl molecule co-crystallizes in the asymmetric unit.

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