An EPR study of Cu2+ ions in [Zn(picol)2(H2O)2]·2H2O single crystals

Electron paramagnetic resonance spectra of Cu2+-doped [Zn(picol)2(H2O)2]·2H2O (C12H18N2O8Zn) single crystals which were taken at room temperature are discussed. It was found from the analysis of the EPR data that the Cu2+ ions substitute for magnetically inequivalent Zn2+ ions. Two magnetically inequivalent sites for Cu2+ were observed. The spin Hamiltonian parameters were determined and thus, the ground state wave functions of Cu2+ ions in two sites were constructed.