Abstract
The infrared spectra (20–2500 cm −1) of gaseous and solid GeH 3NCO and GeD 3NCO and the Raman spectra (10–2500 cm −1) of gaseous, liquid and solid GeH 3NCO and GeD 3NCO have been recorded. The GeNC bending mode was observed at 55.5 cm −1 in the infrared spectrum of gaseous GeH 3NCO and the first overtone occurs at 106 cm −1 in both the infrared and Raman spectra of the gas. The GeH 3 torsion was not observed. The rotational fine structure observed on the GeH 3 modes is believed to be due to the nearly free internal rotation of the GeH 3 moiety. A normal coordinate calculation was carried out utilizing a modified valence force field. A considerable amount of mixing was found between the GeH 3 rocks and NCO bending modes. The other normal modes were fairly pure.
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