High-resolution infrared spectra have been measured for mixtures of CCl3F in Ne, expanded in a supersonic planar jet. We present the first analysis for the v(4) fundamental and a complete analysis for the v(1) band. Accurate spectroscopic constants have been obtained for both the v(1) fundamental of the most abundant isotopic species, (CCl3F)-Cl-35, (CCl2)-Cl-35 (ClF)-Cl-37, and (CClCl2F)-Cl-35-Cl-37. With respect to an earlier work [M. Snels, A. Bell, H. Hollenstein. M. Quack, U. Schmidt, and F. D'Amato, J. Chem. Phys. 103, 8846-8853 (1995)], the observation of Q branches of the three most abundant isotopomers allowed for an unambiguous determination of the v(1) band origins. The v(4) fundamental has not been the subject of a high-resolution analysis up to now. The observation of high-resolution spectra of the central part of the band permitted the determination of band origin, rotational constants, and Coriolis constant for the symmetric-top species, (CCl3F)-Cl-35.
Diode-laser jet spectra and analysis of the nu(1) and nu(4) fundamentals of CCl3F
Snels M;D'Amico G;
2001
Abstract
High-resolution infrared spectra have been measured for mixtures of CCl3F in Ne, expanded in a supersonic planar jet. We present the first analysis for the v(4) fundamental and a complete analysis for the v(1) band. Accurate spectroscopic constants have been obtained for both the v(1) fundamental of the most abundant isotopic species, (CCl3F)-Cl-35, (CCl2)-Cl-35 (ClF)-Cl-37, and (CClCl2F)-Cl-35-Cl-37. With respect to an earlier work [M. Snels, A. Bell, H. Hollenstein. M. Quack, U. Schmidt, and F. D'Amato, J. Chem. Phys. 103, 8846-8853 (1995)], the observation of Q branches of the three most abundant isotopomers allowed for an unambiguous determination of the v(1) band origins. The v(4) fundamental has not been the subject of a high-resolution analysis up to now. The observation of high-resolution spectra of the central part of the band permitted the determination of band origin, rotational constants, and Coriolis constant for the symmetric-top species, (CCl3F)-Cl-35.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
