CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Clorodifluoroacetyl Azide, ClF2CC(O)N3: Preparation, Properties and Decomposition
Autor/es:
LUIS A. RAMOS; XIAOQING ZENG; SONIA E. ULIC; HELMUT BECKERS; HELGE WILLNER; CARLOS O. DELLA VÉDOVA
Revista:
JOURNAL OF ORGANIC CHEMISTRY
Editorial:
AMER CHEMICAL SOC
Referencias:
Lugar: Washington; Año: 2012 vol. 2012 p. 6456 - 6462
ISSN:
0022-3263
Resumen:
Chlorodifluoroacetyl azide, ClF2CC(O)N3, was prepared and characterized by IR (gas, Ar matrix), Raman (liquid), UV−vis (gas), and 19F, 13C NMR spectroscopy. The vibrational spectra were analyzed in terms of a single conformer, gauche-syn, where the Cl−C and the NαNβ bonds are gauche and syn to the CO bond, respectively. The photo and thermal decomposition reactions of the azide were studied with the aid of matrix isolation. In both cases, a new isocyanate species ClF2CNCO was produced and characterized by matrix IR spectroscopy. The conforma- tional properties and the Curtius rearrangement pathways of this new carbonyl azide were theoretically explored, which suggest the preference of a concerted over stepwise decomposition for the global minimum gauche-syn conformer.