METAL-COMPLEXES OF A TETRATHIAFULVALENE 4,5-DITHIOLATE - SYNTHESIS, CHARACTERIZATION AND PROPERTIES OF DIANIONIC AND NEUTRAL MERCURY COMPLEXES

Dianionic mercury bis(tetrathiafulvalene dithiolate) complexes [NMe(4) ](2)[Hg(R(2)C(6)S(8))(2)] (R = Et or Bu) and the corresponding oxidise d neutral complex [Hg(R(2)C(6)S(8))(2)] (R = Et) have been prepared. T he crystal structure of [NMe(4)](2)[Hg(R(2)C(6)S(8))(2)] (R = Et) has been determined and shows that the tetrathiafulvalene dithiolate units are tetrahedrally co-ordinated around the central Hg atom. Cyclic vol tammetry and ESR studies indicated that there is very little interacti on between the two ligands. PI compressed pellet of the powdered neutr al complex exhibited an electrical conductivity df 10(-5) S cm(-1) at room temperature.