Absorption spectrum of deuterated hydrazoic acid, DN3 in the microwave and millimeterwave regiont

Thirty b-type P, Q and R branch rotational transitions and nineteen a-type Q and R branch transitions have been detected and measured for the slightly asymmetric rotor molecule D¹⁴N₃ in the frequency range from 8 to 340 GHz. The information obtained from the analysis of the observed frequencies are greatly improved values of the K-dependent parameters A_O = 344746.589(64) MHz, and D_K = 92.242(33) MHz, refined values for the rotational constants B_O and C_O, a complete set of quartic centrifugal distortion constants and several sextic distortion constants. Both a and b components of the electric dipole moment were determined giving a total dipole moment of μ = 1.76(5) debye.