[Fe(Phen)(CN)4]-: A Versatile Building Block for the Design of Heterometallic Systems. Crystal Structures and Magnetic Properties of PPh4[Fe(Phen)(CN)4]·2H2O and [Fe(Phen)(CN)42M(H2O)2]·4H2O [Phen = 1,10-Phenanthroline; M = Mn(II) and Zn(II)] | Publicación