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

Abstract Microwave and millimeterwave spectra of SO 2 F 2 in The v 2 =1 state up to 450 GHz have been assigned and 174 pure rotational lines measured. The high-resolution infrared spectrum of the ν 2 band ( ν sym SF 2 ) centered at 849.5 cm −1 has been recorded with a resolution of 0.0024 cm −1 . About 1900 rovibrational transitions with Δ K a =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 ν 8 may be deduced from the effective state parameters.