Formation of novel spiro, spiroansa and dispiroansa derivatives of cyclotetraphosphazene from the reactions of polyfunctional amines with octachlorocyclotetraphosphazatetraene

Nucleophilic substitution reactions of N₄P₄Cl ₈, with di-, tri-, and tetra-functional reagents such as N-methyl-1,3-propanediamine, N,N'-methyl-1,3-propanediamine, spermidine and spermine were investigated in this study. Six novel products were isolated whose structures have been characterized by elemental analysis, mass spectrometry, ¹H and ³¹P NMR spectroscopy. The structure of (11) was investigated by X-ray crystallography.