摘要:
The reaction between hexachlorocyclotriphosphazenes (N(3)P(3)Cl(6)) and three equivalents of bis-salicylidene ethylene diamine (HOC(6)H(4)-CH=N-CH(2)-)(2) (salen) was investigated in two different experimental conditions. In the presence of anhydrous Na(2)CO(3) in stirring tetrahydrofuran (THF) medium, the reaction led to a 50:50 mixture of tris[bis(salicylidene)ethylenediamine] cyclotriphosphazene, spiro-N(3)P(3)[(OC(6)H(4)-CH=N-CH(2-))(2)](3) (1) and ansa (2) fully substituted products, whereas, in toluene solution, N(3)P(3)Cl(6) with salen (3) and Al(2)O(3)/KOH afforded the spiro (1), as the only isolable compound. The spectroscopic data revealed that the oxygen atoms of salen moieties were selectively bonded to the three phosphorus atoms of the phosphazene ring. The new derivatives of cyclotriphosphazenes were characterized by IR spectrophotometry (1)H NMR, (31)P NMR spectral data and elemental analysis.