Rotationally resolved overtone transitions of CHD3in the visible range

摘要

Absorption spectra in the 14thinsp;900ndash;18thinsp;700 cmminus;1range have been recorded for gaseous CHD3at high resolution using the intracavity laser absorption spectroscopy (ICLAS) technique. The observed transitions correspond to theN=6 and 7 overtones of the Cndash;H chromophore. Five bands were identified and rotational constants determined for four of them. The comparison of our experimental data with the calculated band origins and rotational constants obtained by Lewerenz and Quack is discussed. Absolute band intensities are given for seven bands corresponding to theN=5, 6, and 7 polyads.