ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Oxidation of bis(dialkyldithiocarbamato)nickel(ii) with bromine and iodine
E. Beinrohr and J. Garaj
Department of Analytical Chemistry, Slovak Technical University,
Abstract: The product of bis(dialkyldithiocarbamato)nickel(II) (Ni(II)L2) oxidation
with bromine is the Ni(IV)L 3 Br complex (L is a dithiocarbamato ligand).
Iodine oxidizes Ni(II)L2 to the complex Ni(III)L2l 3 in the nonpolar medium.
The equilibrium constant of the reaction 2Ni(II)L2 + 3l2^2Ni(III)L 2 I 3 was
determined spectrophotometrically. Its numerical value is (8.7 ± 1.5) x 10 5 for
toluene and (5.0 ± 0.3) x 10 7 for chloroform, respectively. In the polar medium
a final product of oxidation with iodine is the Ni(IV)L 3 I 3 complex which is
thought to arise due to the disproportionation of the primarily formed
Ni(III)L2l 3 complex.
Full paper in Portable Document Format: 393a303.pdf
Chemical Papers 39 (3) 303–315 (1985)