Complexes Containing N-(2-hydroxyethyl)-ethylenediamine with Tetracyanometallate (II): Synthesis, IR Spectra, Thermal Behavior, Crystal Structure, Magnetic Properties and Catalysis

Abstract

Two novel cyano-bridged Ni2+ and Cu2+ compounds, {[M2+(hydeten)(2)(mu-CN)(2)Ni(CN)(2)] (n) , M2+ = Ni2+ (c1) and Cu2+ (c2), N-(2-hydroxyethyl)-ethylenediamine (hydeten), were prepared and characterized by elemental analysis, IR spectroscopy and thermoanalytical measurements. The one-dimensional polymeric structure of c2, which was determined by X-ray diffraction techniques, was formed with a 2,2-TT-type chain, -Cu(hydeten)(2)-NC-Ni(CN)(2)-CN-Cu(hydeten)(2)-, linkages. Also, while the EPR spectra and magnetic properties of complexes c1 and c2 with [Ni(hydeten)(2)Pd(CN)(4)] (c3) and [Cu(hydeten)(2)Pd(CN)(4)] (c4) [Karadag, Z Kristallogr 222:39, 2007] were investigated, the catalytic activity of c3 and c4 was studied. The EPR spectra of c2 and c4 showed that Cu2+ was located in tetragonal distorted octahedral sites (D (4h) ) and the ground state of the paramagnetic electron was d(x2-y2). The magnetic behavior exhibited weak antiferromagnetic interactions in all the complexes. Also, the catalytic properties of c3 and c4, which were assigned with Suzuki and Heck coupling reactions, showed that they did not have catalytic effects.