Electron paramagnetic resonance studies of Cu2+ ion in tetraaqua-di(nicotinamide)Ni(II)-saccharinates single crystals.
X-band (approximately 9.8 GHz) electron paramagnetic resonance (EPR) measurement at ambient temperature in three mutually perpendicular planes have been carried out on a single crystal of Cu2+ doped mixed ligand complex of Ni(II) with saccharin and nicotinamide [Ni(Nic)2(H2O)4](sac)2. The angular dependent spectra showed that the Cu2+ ion enters Ni2+ sites in the lattice and distorted local environment of Ni2+ site. The principal g and A values, covalency parameter (alpha'2), mixing coefficients (alpha and beta) and Fermi contact term (K) have been evaluated from the EPR analysis. The ground-state wave function of the Cu2+ ion has been constructed using the alpha'2, alpha and beta values. The nature of the distortion present in the lattice is obtained from the values of the mixing coefficients.
Yerli
Y
Y
Department of Physics, Faculty of Science, Gebze Institute of Technology, Istanbul Caddesi No 101, 41400 Kocaeli, Gebze, Turkey. yyerli@gyte.edu.tr
Kazan
S
S
Yalçin
O
O
Aktaş
B
B
D002413:Cations, Divalent; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry*; D012439:Saccharin / Q000031:analogs & derivatives* / Q000737:chemistry*
D002413:Cations, Divalent; D003300:Copper; D009532:Nickel; D012439:Saccharin