Abstract
Compares the experimental values for shifts of some rotational transitions of OCS and CH3CCH (propyne) measured by Luijendijk (1977) with the calculated values obtained from the Anderson-Tsao-Curnutti-Frost theory and the modified Murphy-Boggs theory as formulated by Cattani. The authors review the broadening and shifting of the J=0 to 1 transitions of the methylhalogenides CH3Cl, CH3Br and CH3I. In particular, they conclude that the theories mentioned predict the right temperature dependence of the shift parameters for these transitions in the temperature region investigated (150-350K). Finally, they give a list of all shift measurements on rotation and inversion lines as far as they are known to us.