Alkylaminocyclodiphosph(III)azanes

The preparation of a series of aminocyclodiphosph(III)azanes, [graphic omitted]R2(R1= Me, R2= But; R1= R2= But; R1= R2= Ph) and (R12N)·[graphic omitted]R3[R1= Me, R2= Me, R3 But; R1= Me, R2= Et, R3= But; R1= Me, R2= R3= But; R1= Et, R2= R3= But; R1= Me, R2= R3= C6H4X-p(X = H, Me, Cl, or OMe); and R1= Et, R2= R3= Ph] by aminolysis of chlorocyclodiphosph(III)azanes is described. In many cases geometrical isomers are obtained which display exceptionally large differences (65–90 p.p.m.) in 31P chemical shift. Aspects of the 1H and 31P n.m.r., mass, and i.r. spectra of those compounds are recorded and discussed.