Fourier transform infrared spectrum of well ordered solid dinitrogen tetroxide

摘要

The full infrared spectrum of well ordered N2O4(D2h) thin films is reported. Improved sample crystallinity is reflected in a fine structure of the internal mode bands that is less complicated than previously reported, and in a well resolved phonon spectrum. New assignments, notably for thev10(B2u) internal deformation mode, are suggested and the symmetry classification of the phonon bands is substantiated.