From ferromagnets to high-spin molecules: the role of the organic ligands

The nature of the organic ligands is crucial in influencing the dimensional ity of bimetallic cyanide-bridged systems. By controlling the number of coo rdination sites around a metal ion, we show that systems with new structure and original architecture may be obtained. Blocking four of the coordinati on sites around Ni-II and Mn-II, new structures with new architectures can be obtained depending on the position of the remaining two available sites: in the trans or cis position.