Ionothermal synthesis of new cobalt and chromium thiophosphate anions [Co(Co(P3S8)2)2]4− and [Cr(P3S9)2]3−

Two new metal thiophosphate anions, [Co(Co(P3S8)2)2]4− and [Cr(P3S9)2]3−, have been isolated as single crystals of EMIM (1-ethyl-3-methylimidazolium) salts from ionothermal reaction of the elements in [EMIM][CF3SO3].41