Cyanide-Bridged Single-Molecule Magnet Constructed by an Octacoordinated [W(CN)₆(bpy)]^- Anion

Two cyanide-bridged WV−M [M = MnIII (1), CoII (2)] bimetallic clusters were prepared by self-assembling a new molecular precursor [W(CN)6(bpy)]- and the corresponding metal complexes. Compound 1 shows a tetranuclear W2Mn2 entity, consisting of a Jahn−Teller ion, MnIII, which serves as an anisotropic source, while compound 2 exhibits a trimeric W2Co structure. Among them, compound 1 displays slow relaxation of the magnetization, which is typical of a single-molecule magnet behavior.