metal-organic compounds
Three compounds, [(C2H5)4N]2[HgCl4], [(C2H5)4N]2[CdCl4] and [(C2H5)4N]2[ZnCl4], have been investigated by means of single-crystal X-ray diffraction. They are isomorphous at room temperature. The structures of the three crystals are comprised of discrete [(C2H5)4N]+ cations and [MCl4]2- anions, which both present dynamic orientational disorder. The major structural difference between these compounds is seen in the size of the slightly distorted [MCl4]2- tetrahedra.