Popis: |
The pyrolysis of triphenyl (diphenoxyphosphinyl)phosphorimidate ( 1 ) was investigated using differential thermal analysis-thermogravimetry (DTA-TG), thermogravimetry-mass spectrometry (TG-MS), infrared spectroscopy (IR), mass spectrometry (MS), high performance liquid chromatography (HPLC) and the 31 P nuclear magnetic resonance method ( 31 P NMR). The cleavage of 1 by electron impact (EI) was also investigated, the results were used to elucidate the pyrolysis process. Compound 1 decomposed on heating to form phenol, triphenyl phosphate, hexaphenoxycyclotriphosphazene, octaphenoxycyclotetraphosphazene, triphenyl [ N -(diphenoxyphosphinyl)- P , P -diphenoxyphosphinimyl]phosphorimidate and longer-chain phosphazene compound (PhO) 2 P(O)NP(OPh) 2 NP(OPh) 2 NP(OPh) 3 . In mass spectrometric analysis, 1 was cleaved by the elimination of a phenoxyl radical, similar to pyrolysis, the formation of the ion assigned to triphenyl phosphate was observed. |