Structural and fluorescence properties of phenolphthalein bridged cyclotriphosphazatrienes

This study dealt with the reactions of hexachlorocyclotriphosphazatriene. N3P3Cl6, (trimer) (1) with phenolphthalein (2) to give the phenolphthalein bridged compounds 3, 4 and 5 The phenolphthalein bridged cyclotriphosphazatriene derivatives are reported for the first time. The new compounds (3-5) are characterized by elemental analysis. mass spectrometry, UV-vis, FT-IR, H-1, P-31 NMR and fluorescence spectroscopy The more bridged phenolphthalein groups show the higher intensity of the absorption bands in the UV-vis spectra Fluorescence spectrum of compound 3 shows a small hand in the lower spectral range. while the spectra of compounds 4 and 5 show more intense and a band in higher spectral range (C) 2009 Elsevier B.V All rights reserved