Preparation and polymerization of addition compounds of unsaturated tertiary phosphine oxides

Abstract Complexes of vinyldiphenylphosphine oxide, vinyldi‐ n ‐butylphosphine oxide, and trans ‐1‐propenyldiphenylphosphine oxide have been prepared with salts of Zn(II), Hg(I), Sb(III), Sn(IV), Ti(IV), Fe(III), and U(VI). The observed shifts in the phosphoryl stretching frequency on complex formation were similar to the values reported for corresponding complexes with triphenylphosphine oxide. The polymerization behavior of these compounds in the presence of free‐radical and ionic intiators is similar to that of the unsaturated phosphine oxides themselves. In spite of high salt content, the polymers form clear plaques on molding, and they are completely soluble in appropriate organic solvents.