SYNTHESES AND SPECTROSCOPIC STUDIES OF DIPHENYLPHOSPHINATO DERIVATIVES OF BORON

2-Diphenylphosphinato-1,3,2-dioxaborolanes and -borinanes of the type OGOBOP(O)Ph, (where G = -CH2CHMe-, -CH2CH2CH2-, -CH2CH2CHMe-, -CMe2CMe 2-, -CMe2CH2CHMe-, -CH2CMe2CH2-, -CH2CEt2CH2-, and -C6H4-) are obtaine d by the reaction of diphenylphosphinic acid with the corresponding 2, 2'-oxo-bis-1,3,2-dioxaborolanes and -borinanes. The products are white crystalline solids, which have sharp melting points and are hydrolyti cally stable. They have been characterized by elemental analysis, IR a nd multinuclear NMR (B-11, P-31, and Sn-119) studies. The data suggest structures with monodentate phosphinato moieties and 3-coordinated bo ron atoms.