High-resolution Fourier transform spectra of CH2D2 : The Fermi-interacting vibrational bands ν8(B2), ν4+ν9(B2) and 2ν9(A1), ν3+ν4(A1)

Abstract The investigation of the rotational structure of ν 4 + ν 9 ( B 2 ), 2 ν 9 ( A 1 ), and ν 3 + ν 4 ( A 1 ) bands of CH 2 D 2 is carried out. The band centers (2285.97695, 2458.79616, and 2469.20351 cm −1 , respectively) and rotation-vibration energy levels are obtained.