The synthesis of new derivatives of bis-( tetrachlorocyclotriphosphazeny1)-spermine was achieved upon reaction of some MONOSPIRO-N3P3CI,[HN-(CH2),-NH] ( n = 2,3,4) derivatives and of the gem-N3P3Az2C1, with spermine. AU compounds were obtained in the monomeric state. 'lP and 13C high-resolution NMR were used, together with IR spectroscopy and mass spectrometry, to assign molecular structures and to reveal conformational equilibria, if any.
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