SINGLE-CRYSTAL EPR STUDY OF MN(II)-DOPED CIS-CATENA-MU-SULFATO-AQUOTRIS(IMIDAZOLE)CADMIUM(II) - MN(II) IN IMIDAZOLE LIGATED LOW-SYMMETRY SITE

EPR of Mn(II)-doped single crystals of cis-catena-mu-sulphato-aquotris(imidazole)cadmium(II) has been studied in the temperature range 300-90 K. Mn(II) replaces Cd(II) substitutionally giving rise to two magnetically inequivalent sites. The large magnitude and high asymmetry component of the D-tensor is in accordance with the low symmetry of the substitutional site. Due to the non-first order nature of the spectrum all the work had to be carried out at Q-band frequency. Forbidden transitions corresponding to DELTAm(l) = +/- 1 and +/- 2 are observed for a number of orientations and their positions have been calculated by perturbation theory taking into account the second order admixtures due to cross terms in D and hyperfine coupling constant A. The spin-Hamiltonian parameters at 300 K are A = - 83.5, D = - 790.0, E = -80.4 (all in units of 10(-4) cm-1) and g = 2.0014.