EPR and Optical Absorption Studies of Cu 2+ Ions in [ZnPd(CN) 4 (C 4 H 12 N 2 O 2 )] Single Crystals

Abstract

A Cu 2+ -doped single crystal of catena-trans-bis(N-(2- hydroxyethyl)-ethylenediamine) zinc(II)-tetra-m-cyanopaladate(II) [ZnPd(CN) <inf>4</inf> (C <inf>4</inf> H <inf>12</inf> N <inf>2</inf> O <inf>2</inf> )] complex has been investigated by electron paramagnetic resonance (EPR) technique at room temperature. EPR spectra indicate that Cu 2+ ions substitute for magnetically equivalent Zn 2+ ions and form octahedral complexes in [ZnPd(CN) <inf>4</inf> (C <inf>4</inf> H <inf>12</inf> N <inf>2</inf> O <inf>2</inf> )] hosts. The crystal field affecting the Cu 2+ ion is nearly axial. The optical absorption studies show two bands at 322 nm (30864 cm -1 ) and 634 nm (15337 cm -1 ) which confirm the axial symmetry. The spin Hamiltonian parameters and the relevant wave function are determined. © 2008 Springer.