Copper(II) and Nickel(II) Alkylxanthate Complexes (R = C<sub>2</sub>H<sub>5</sub>, i-C<sub>3</sub>H<sub>7</sub>, i-C<sub>4</sub>H<sub>9</sub>, s-C<sub>4</sub>H<sub>9</sub>, and C<sub>5</sub>H<sub>11</sub>): EPR and Solid-State<sup>13</sup>C CP/MAS NMR Studies
作者:A. V. Ivanov、O. A. Bredyuk、O. N. Antzutkin、W. Forsling
DOI:10.1023/b:ruco.0000034788.80316.d5
日期:2004.7
Alkylxanthate complexes of the general formula [MS(S)COR}(2)] (M = Ni, Cu-63, and Cu-65; R C2H5, i-C3H7, i-C4H9, s-C4H9, and C5H11) were synthesized and studied by EPR and high-resolution solid-state C-13 CP/MAS NMR. In the copper(II) complexes stabilized in the matrix of nickel(II) compounds, square planar chromophores [CuS4] are characterized by rhombic distortion (EPR data). Experimental EPR spectra were simulated at the second order of perturbation theory. Nickel(II) complexes were characterized by C-13 NMR spectra. In all cases, the -OC(S)S- groups were found to exhibit intramolecular structural equivalence.