Microwave, millimeterwave, and high-resolution FTIR study of the ν2=1 state of SO2F2

Microwave and millimeterwave spectra of SO2F2 in The v2=1 state up to 450 GHz have been assigned and 174 pure rotational lines measured. The high-resolution infrared spectrum of the ν2 band (νsym SF2) centered at 849.5 cm−1 has been recorded with a resolution of 0.0024 cm−1. About 1900 rovibrational transitions with ΔKa=0 and ±2 have been assigned. Rotational and rovibrational data have been combined, and excited state parameters up to sextic centrifugal distortion constants have been obtained using a Watson type Hamiltonian in S-reduction. No perturbation has been observed, although weak B-type Coriolis interactions with ν8 may be deduced from the effective state parameters.