Complexes formed by reaction of bis(dipropyleneglycol)-1-hydroxy-2,2,2-trichloroethylphosphonate with tin(IV) halides and 3d metal Perchlorates ‡

Abstract

In the past, these laboratories have studied adducts of neutral phosphonate esters with various metal salts, and polymeric metal complexes derived from reactions of the neutral ester with metal halides(2). For example, diisopropyl methylphosphonate [dimp; (i-PrO)2MeP=O] yields adducts with 3d metal perchlorates(3), while upon reaction with SnX4 (X = Cl, Br or I) it produces initially adducts of the Sn(dimp)2X4 type(4), which react further with the mother liquor at elevated temperatures (>100° C), yielding, successively, Sn(OOPMe(OPr-i))2X2 and Sn(O3PMe)2 polymeric complexes with concomitant formation of i-PrX(5,6). We recently became interested in studying the corresponding reactions of the same metal salts with a more complex neutral phosphonate ester with long-chain substituents, such as Weston Chemical’s CP-1 s(dipropyleneglycol) 1-hydroxy-2,2,2-trichloroethyl-phosphonate (L; 1). Accordingly, research was undertaken in this direction, and our progress is reported in this communication.