Abstract
The reactions of geminal N3P3(NHBut)2Cl4 with difunctional alcohols, amines, and aminoalcohols were investigated and a series of spiro derivatives, N3P3(NHBut)2[X(CH2)nY]Cl2 (X = Y = O, NH: n =2,3,4; × = O, Y = NH, n = 2, 3, 4; × = Y = NMe, n = 2, 3; X= NH, Y = NMe; n = 2.3; X= O, Y = NMe, n = 2), N3P3(NHBut)2[O(CH2)nO]2Cl2 (n = 3, 4) as well as a monodentate compound, N3P3(NHBut)2[O(CH2)3OH]Cl3, were isolated. The phosphorus-31 and proton n.m.r. spectra of these compounds are discussed. Degeneracies in the phosphorus-31 n.m.r. spectra could be reduced by the use of lanthanide shift reagents and by solvent effects.

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