Cyano-Bridged 4f-3d Coordination Polymers with a Unique Two-Dimensional Topological Architecture and Unusual Magnetic Behavior

Rings of 24 atoms form part of the two-dimensional structure of the novel compounds [NdM(bpym)(H2O)4(CN)6]⋅3 H2O (M = Fe (1), Co (2); bpym = 2,2′-bipyrimidine). These compounds are the first two-dimensional cyano-bridged species containing lanthanide and transition metal centers (see picture). The structures and magnetic properties are investigated.