The infrared spectrum of di-imide near 7.6 μm

Abstract

The gas phase spectrum of N 2 H 2 has been investigated in the region of 7.6 μm at a resolution of about 0.06cm −1 . Two bands have been identified; one, near 1288 cm −1 , is a type C band and must correspond to ν 4 (the hitherto unidentified A u torsional mode), and the other, near 1317 cm −1 , is a type A–B hybrid and corresponds to ν 6 (the B u bending mode). Analysis of the spectrum is complicated by the simultaneous presence of strong A-type and B-type Coriolis interactions which couple the observed levels.