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

• Published in: Inorganica Chimica Acta 2001-12, Vol.326 (1), p.3-8
• Main Authors: Černák, J., Skoršepa, J., Abboud, K.A., Meisel, M.W., Orendáč, M., Orendáčová, A., Feher, A.
• Format: Article
• Language: English
• Subjects: 1,2-Diaminoethane; Copper; Crystal structures; Hydrogen bonds; Magnetic properties; Tetracyanopalladate(II)
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/S0020-1693(01)00574-6

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 μ 2-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. Linking of [Cu(en) 2] 2+ and [Pd(CN) 4)] 2− building blocks by the bridging μ 2-CN − groups yields a one-dimensional structure of Cu(en) 2Pd(CN) 4. The bridging cyano groups are in trans positions in the cation as well as in the anion. The chains are connected through weak hydrogen bonds of the type NH⋯N(C). Magnetic susceptibility and magnetization studies revealed the presence of a weak antiferromagnetic exchange coupling in the studied material.