31P NMR Data of Four Coordinate Phosphorus Compounds Containing A P=Ch Bond and One or Two P-H Bonds

The NMR data are presented in Table I. It is divided into four parts: Section II contains data of phosphonic acids and derivatives HP(Ch)X₂, Section 12 contains data of phosphinic acids and derivatives H₂P(Ch)X, Section 13 contains data of monosubstituted phosphinic acids and derivatives, RHP(Ch)X, and Section 14 contains data of secondary phosphine chalcogenides R₂HP=Ch.