Crystal structures and dielectric properties of two tert-butylammonium chlorocadmate(II) complexes

Reactions of tert-butylamine hydrochloride with cadmium(II) chloride in mixed solutions yield two chlorocadmate(II) compounds, [C4H12N]2[Cd3Cl8] (1) and [C4H12N]9[Cd8Cl25]·(H2O)6 (2). Crystal structures of the two compounds have been determined by X-ray single-crystal diffraction. Compound 1 has a 2D structure in which the inorganic anionic layers are intercalated by tert-butylammonium cations to give an alternated inorganic–organic layered structure. Compound 2, however, is composed of novel anionic octanuclear [Cd8Cl25] clusters, lattice water molecules, and ordered and disordered tert-butylammonium cations. Dielectric constants of both compounds were measured at different temperatures and frequencies.