O,O'-ALKYLENE DITHIOPHOSPHATO DERIVATIVES OF ALKALINE-EARTH METALS MG, CA, SR AND BA

Complexes of the type M[S(2)POGO](2) (where M = Mg, Ca, Sr and Ba; G = -CMe(2)CMe(2)-, CMe(2)CH(2)CHMe-, -CH(2)CMe(2)CH(2)-, CH(2)CH(2)CHMe- ) have been synthesized by reacting MCl(2) (anhy.) with ammonium salts of alkylene dithiophosphoric acids in 1:2 molar ratio in aqueous medi um and then extracted using THF. These complexes have been characteriz ed by elemental analysis, molecular weight measurements, IR and multin uclear NMR (H-1 and P-31) studies. A downfield shift in P-31 nmr (delt a = similar to 20 ppm) have been observed in these complexes. On the b asis of these studies a four coordinated nature of the metal atom has been suggested.