The high resolution (2.3–3.1× 10− 3cm− 1) Far infrared Fourier transform spectrum of PH2D and PHD2 was recorded in the 20–160cm− 1 region. Assignments were made using a specially developed computer-assisted automatic 'two pair transition'method. Altogether, 1300 and 590 infrared transitions of the PHD2 and PH2D species, respectively, were fitted together with appropriately weighted microwave transitions to derive the rotational and ...
