[W(bipy)(CN)₆]⁻: A Suitable Metalloligand in the Design of Heterotrimetallic Complexes. The First Cu^IILn^IIIW^V Trinuclear Complexes

The first 3d–4f–5d heterotrimetallic complexes using [W^V(bipy)­(CN)₆]⁻ as a metalloligand were synthesized (bipy = 2,2′-bipyridine). The structural and magnetic properties of three [Cu^IILn^IIIW^V] complexes (Ln = Gd, Ho, Tb) are discussed.