The first coordination compound containing three different types of spin carriers: 2p-3d-4f (TCNQ(center dot-), Cu2+ and Gd3+)

A novel heterospin system, [{CuL}(2)Gd(TCNQ)(2)].TCNQ- .CH3OH.2CH(3)CN, is obtained by reacting the mononuclear complex, [CuL], with gadolinium(III) nitrate, followed by the substitution of the nitrato ions with anionic organic radicals.