About 720 transitions of CF$-3$/CFH$-2$/ molecule in the excited 3v$-18$/, v$-11$/ $PLU v$-18$/, and v$-17$/ states were measured in the frequency range between 49 and 142 GHz. Rotational and centrifugal distortion constants were derived from experimental spectra using Watson type Hamiltonian in the I$+r$/ representation.
展开▼
