Physico-chemical studies of nickel(II) O,O-alkylene dithiophosphates and their adducts with nitrogen bases

Abstract

Detailed physico-chemical investigations on nickel- (II) bis(alkylene dithiophosphates), the preparation and properties of which have been published earlier [1], are described in this paper with a view to throw light on their structural features. These physico- chemical studies include IR, NMR (¹H and ³¹P), electronic spectral and variable temperature magnetic susceptibility studies. The contact shifts for protons of the above adducts in the NMR spectra indicate the involvement of σ- and π-orbitals in spin transfer. Studies of complexation equilibria in solution also indicate the formation of the intermediate mono- adduct species.