4-triphenylmethylaniline substituted cyclotriphosphazene derivatives assisted by multiple phenyl rings

Abstract

In the present study, nucleophilic substitution reactions of hexachlorocyclotriphosphazene (1) and 4-triphenylmethylaniline (2) were carried out under different mole ratios. As a result of the reactions, mono (3), bis geminal (4), tetrakis geminal (5), and hexakis substituted (6) cyclotriphosphazene derivatives formed. The product diversity and yields of new cyclotriphosphazene derivatives (3-6) were comprehensively investigated by using the proton-decoupled P-31 Nuclear Magnetic Resonance (NMR) spectra of the reaction mixtures. Pure cyclotriphosphazene derivatives (3-5) have been characterized by H-1, C-13 and P-31 NMR, MALDI-TOF mass and elemental analyses. The structure of compound 4 was also elucidated by single crystal X-ray diffraction technique. Along with the spectroscopic techniques, the thermal stabilities of 4-triphenylmethylaniline substituted cyclotriphosphazene derivatives (4 and 5) were determined by thermogravimetric analysis (TGA) technique.