Pb(dca)(2) (dca = dicyanamide): a novel 3D compound with unusual coordination modes of dicyanamide

The crystal structure determination of Pb(dca)(2) reveals a new M( dca) 2 structural type with two unusual coordination modes of dicyanamide existing in a novel (4,5,9)-connected 3D-polymeric structure, indicating the versatile coordination behaviour of both dicyanamide and lead atom.