, Volume 30, Issue 7, pp 480-485

Copper(II) and Nickel(II) Alkylxanthate Complexes (R = C2H5, i-C3H7, i-C4H9, s-C4H9, and C5H11): EPR and Solid-State 13C CP/MAS NMR Studies

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Abstract

Alkylxanthate complexes of the general formula [M{S(S)COR}2] (M = Ni, 63Cu, and 65Cu; R = C2H5, i-C3H7, i-C4H9, s-C4H9, and C5H11) were synthesized and studied by EPR and high-resolution solid-state 13C 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 13C NMR spectra. In all cases, the –OC(S)S– groups were found to exhibit intramolecular structural equivalence.