S. Tanase et al., Construction of 3d-4f heterometallic coordination polymers by simultaneoususe of hexacyanometalate building-blocks and exo-bidentate ligands, CHEM COMMUN, (12), 2001, pp. 1084-1085
The reaction of Pr(NO3)(3) 6H(2)O with 4,4'-bipyridine N,N'-dioxide (L) and
K-3[M(CN)(6)] [M Fe-III, Co-III] gives isomorphous heteropolynuclear compl
exes with formula [{(H2O)(5)LPr-NC-M(CN)(5)}(mu -L)].0.5L.4H(2)O, which exh
ibit a novel supramolecular architecture created by the interplay of coordi
native, hydrogen bonding and pi-pi stacking interactions.