High-resolution stimulated Raman spectroscopy and analysis of line positions and assignments for the ν2 and ν3 bands of 13C2H4

Abstract

High-resolution stimulated Raman spectra ofCH in the regions of the ν and ν Raman active modes have been recorded at two temperatures (145 and 296 K) based on the quasi continuous-wave (cw) stimulated Raman spectrometer at Instituto de Estructura de la Materia IEM-CSIC in Madrid. A tensorial formalism adapted to XY planar asymmetric tops with D symmetry (developed in Dijon) and a program suite called DTDS (now part of the XTDS/SPVIEW spectroscopic software) were proposed to analyze and calculate the high-resolution spectra. A total of 103 and 51 lines corresponding to ν and ν Raman active modes have been assigned and fitted in wavenumber with a global root mean square deviation of 0.54 × 10 and 0.36 × 10 cm, respectively. Due to the fact that the Raman scattering effect is weak, we did not perform in this contribution the line intensities analysis. © 2016 John Wiley & Sons, Ltd.