Rearrangements of diphosphine oxides and anhydrides of phosphorus acids. Phosphorotropic tautomerism
Abstract. Ihe effects of electronic and structural properties of substituents on the relative theruLodynaxnic stability of dipho sphine inonoxides R2P(A)-.PR'2 and. isomeric compounds R2P-P(A)R '2 or R2P..A.-PR '2 (A=O, S,NX) have been demonstra.ted. Ihe irreversible and reversible (tautomeric) re.. arrangements have been found for these types of compounds. First data on phosphorotropic aM germanotropic tautome-. rism related. with the change of phosphorus coordination nuiiber are given. the relative stability of isomers con-. taming the three-. or four—coordinate phosphorus was dis-. cussed.