High-Resolution Fourier Transform Infrared Spectrum of the ν1+ν3 Band System of H13C12CH

A high-resolution vibration–rotation overtone spectrum of H13C12CH has been recorded with a Fourier transform infrared spectrometer in the wavenumber region 6400 to 6700 cm−1. The main band, assigned as the C–H stretching combination band ν1+ν3, and some overtone and hot bands have been rotationally analyzed. Altogether eight parallel bands have been observed. The vibrational labels have been deduced on the basis of the assignments of the fundamental ν3 antisymmetric C–H stretching band system.