Adducts of zinc and copper(II) dialkyldithiocarbamate complexes with dibutyl-and diisobutylamines: Synthesis, structures, EPR and solid-state natural abundance C-13 and N-15 CP/MAS NMR spectra

作者：Ivanov A V^*; Zaeva A S; Novikova E V; Gerasimenko A V; Forsling W

来源：Russian Journal of Coordination Chemistry, 2007, 33(4): 233-243.

DOI：10.1134/S107032840704001X

Crystalline adducts of zinc and copper(II) dithiocarbamate complexes with dibutyl-and diisobutylamines of the general formula [M(NHR'(2))(S2CNR2)(2)] (M = Zn, Cu-63, and Cu-65; R = CH3 and C2H5; R-2 = (CH2)(4)O; R' = C4H9 and i-C4H9) were synthesized. Their structures and spectroscopic properties were studied by EPR and solid-state natural abundance C-13 and N-15 CP/MAS NMR spectroscopy. Experimental EPR data and computer-assisted modeling confirmed the individual character of copper(II) adducts. The geometries of the copper coordination polyhedra were found to be intermediate between a tetragonal pyramid and a trigonal bipyramid (TBP). The contributions from TBP to the geometries of the adducts obtained were calculated from the EPR data. According to the X-ray diffraction data, the adduct of zinc diethyldithiocarbamate with diisobutylamine exists in two isomeric forms. The C-13 and N-15 CP/MAS NMR signals were assigned to the atomic positions in two crystallographically independent conformer molecules.

• 出版日期2007-4