2D and 3D coordination polymers based on 2,2′-bipyrimidine and cyanide bridging ligands incorporating coordinated and guest ammonia molecules. Synthesis, crystal structures, magnetic properties and thermal analysis of [Ni(CN)4]2[(Ni(NH3)2)2(bpym)]·2H2On and [Cu2(CN)2(bpym)]·NH3n | Publicación