posted on 2006-11-27, 00:00authored byJung Hee Yoon, Jeong Hak Lim, Hyoung Chan Kim, Chang Seop Hong
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.