Collect. Czech. Chem. Commun. 1985, 50, 2480-2492

Ground state molecular parameters of phosphine, PH3, from the simultaneous analysis of the high-resolution infrared, microwave and submillimeterwave spectra

Soňa Přádnáa, Dušan Papoušeka, Jyrki Kauppinenb, Sergei P. Belovc, Andrei F. Krupnovc, Flavio Scappinid and Gianfranco Di Lonardod

a The J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, 121 38 Prague 2
b Department of Physics, University of Oulu, Finland
c Institute of Applied Physics, Academy of Sciences, Gorkii, U.S.S.R.
d Instituto di Spettroscopia Molecolare del C.N.R., 1-40126 Bologna, Italy


Fourier transform spectra of the ν2 band of PH3 have been remeasured with 0.0045 cm-1 resolution. Ground state combination differences from these data have been fitted simultaneously with the microwave and submillimeterwave data to determine the ground state spectroscopical parameters of PH3 including the parameters of the Δk = ± 3n interactions. The correlation between the latter parameters has been discussed from the point of view of the existence of two equivalent effective rotational operators which are related by a unitary transformation. The ΔJ = 0, +1, ΔK = 0 (A1A2, EE) rotational transitions in the ν2 and ν4 states have been measured for the first time by using a microwave spectrometer and a radiofrequency spectrometer with acoustic detection.