Preparation, crystal structure and magnetic properties of Cu(en)2Pd(CN)4

The compound Cu(en)2Pd(CN)4 was prepared and characterized. Its crystal structure is constructed of chains running along the body diagonal to the unit cell. The building elements are [Cu(en)2]2+ cations and square-planar [Pd(CN)4]2− anions, which are linked by the bridging μ2-CN− groups. These bridging cyano groups are in trans positions in the cation as well as in the anion. The axial CuN(C) coordination bonds are rather long (2.544(2) Å). The chains are connected through weak hydrogen bonds of the type NH⋯N(C), thereby forming an infinite plane-like arrangement. Susceptibility and magnetization studies revealed the presence of a weak antiferromagnetic exchange coupling in the studied material.