SCHEDULED MAINTENANCE
High-resolution FTIR study of the ν2 fundamental of cis-CHF![[double bond, length half m-dash]](https://www.rsc.org/images/entities/char_e006.gif)
CHF†
Abstract
The high-resolution C stretching, gives rise to a strong b-type band approximately centered at 1719 cm−1. The rovibrational analysis led to the assignment of many transitions in the P, Q and R branches with J′⩽70, Ka′⩽30, Kc′⩽69. From a simultaneous fit of the ground state combination differences coming from the present work and the previously analyzed ν4 and ν10 fundamentals, together with a few literature microwave data, a set of ground state parameters, including all the quartic and four new sextic centrifugal distortion
coefficients, was derived. Using the Watson's A-reduction Hamiltonian in the Ir representation, from the final fit of about 3600 assigned transitions, accurate rovibrational constants for the upper state were obtained with a standard deviation of about 8 × 10−4 cm−1.
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![[double bond, length half m-dash]](https://www.rsc.org/images/entities/h2_char_e006.gif)
CHF
