O,O-Alkylene dithiophosphates of palladium(II) and their adducts with triphenylphosphine

Abstract

The diamagnetic square-planar, O,O-alkylene dithiophosphates of palladium(II) with the general formula, ▪ (where G(OH) 2  2,3-dimethylbutane-2,3-diol; butane-2,3-diol; 2-methylpentane-2, 4-diol and 2, 2-dimethylpropane-1,3-diol) have been synthesized by the reactions of potassium tetrachloropalladate(II) with ammonium alkylene dithiophosphates or the parent alkylene dithiophosphoric acid in 1:2 molar ratios. These compounds are orange or brown coloured solids and except for bis(neopentylene dithiophosphato)palladium(II), they are soluble in halocarbons (CHCl 3 and CH 2Cl 2). IR, NMR ( 1H and 31P) and electronic spectra along with magnetic data indicate four-coordinated planar geometry for these derivatives. With triphenylphosphine, the above derivatives form 1:1 solid halocarbon soluble adducts, the structures of which have been elucidated by low temperature 31P NMR spectra.