Synthesis and characterization of heterodinuclear Ln (super)3+ -Fe (super)3+ and Ln (super)3+ -Co (super)3+ complexes, bridged by cyanide ligand (Ln (super)3+ = lanthanide ions). Nature of the magnetic interation in the Ln (super)3+ -Fe (super)3+ complexes

Research has been conducted on Ln (super)3+ -Fe (super)3+ and Ln (super)3+ -Co (super)3+ complexes, where Ln represents lanthanide(III) ions. The nature between the lanthanide(III) and iron(III) ion couplings has been investigated by studying Co (super)3+ ion diamagnetism, and the results are reported.