O,O′-ALKYLENE DITHIOPHOSPHATO DERIVATIVES OF ALKALINE EARTH METALS Mg, Ca, Sr and Ba

Abstract

Complexes of the type (where M = Mg, Ca, Sr and Ba; G = [sbnd]CMe₂CMe₂[sbnd], CMe₂CH₂CHMe[sbnd], [sbnd]CH₂CMe₂CH₂[sbnd], CH₂CH₂CHMe[sbnd]) have been synthesized by reacting MCl₂ (anhy.) with ammonium salts of alkylene dithiophosphoric acids in 1:2 molar ratio in aqueous medium and then extracted using THF. These complexes have been characterized by elemental analysis, molecular weight measurements, IR and multinuclear NMR (¹H and ³¹P) studies. A downfield shift in ³¹P nmr (δ = ∼20 ppm) have been observed in these complexes. On the basis of these studies a four coordinated nature of the metal atom has been suggested.

Key Words:

• Alkylene dithiophosphate
• magnesium chloride
• calcium chloride
• strontium chloride
• barium chloride