Line positions and intensities in the ν12 band of ethylene near 1450cm-1: An experimental and theoretical study

Recently, we built a tensorial formalism adapted to the spectroscopy of X2Y4 molecules. It is based on formalisms developed in Dijon for spherical-top molecules. This approach has the advantages to allow a systematic development of rovibrational interactions and to make global analyses easier to perform. We used this tool to carry out an analysis of the ν12 band of 12C2H4 near 1450cm-1, both in frequencies and intensities. 1240 line positions and 871 intensities, measured in a set of spectra recorded in Brussels, with global root mean square deviations of 1.6×10-4cm-1 and 1.88%, respectively.