A new type of conductive coordination compound of C~n[M(dmit)~2] (M=Ni, Pd, Pt, n=2, 1) has been obtained by introducing unsaturated heterocyclic cations (N-methylpyridine cation, N-methylquinoline cation and N-methylbenzothiazole cation) and trimethylphenyl ammonium into the system of [Ni(dmit)~2]^n^-. The components and structures of these new compounds have been determined. IR spectra, ESR spectra, XPS spectra, UV spectra, magnetic susceptibilities and conductivities were studied. It is concluded that the charge number and distribution of the anion can be influenced by the outer cations, therefore, the electrical property of the complexes was influenced by the cations through another way.

Key words: COMPLEX COMPOUNDS, METAL COMPLEX, THIOKETONE, SULFUR HETEROCYCLICS COMPOUNDS, CYCLOPENTENE P, ELECTRICAL CONDUCTIVITY, SUSCEPTIBILITY, ELECTRICAL CONDUCTIVITY