Rotational correction terms polarizability derivatives

These quantities are given in Table 3.2 as well. The same procedure can be followed in the case of odier X2CY molecules with X = D, F, Cl, Br and Y = O, S. The rotation-free isotope is created by setting the X-masses equal to zero. Application of the zero-mass approach in evaluating rotational correction terms to polarizability derivatives will be illustrated with an example in die second part of the book. 

Rotational correction terms to polarizability derivatives for the three molecules obtained by following the procedure described above are given in Tables 9.2, 9.3 and 9.4, respectively. 

Symmetry coordinates and rotational correction terms to polarizability derivatives with respect to symmetry coordinates for acetonitrile (Reprinted from Ref [2S ] widi permission of John Wiley Sons, Ltd., Copyright (1993] John Wil Sons, Ltd.)... 

It should be pointed out that if a non-rotating (hypothetical-mass) isotope is chosen as a reference molecule, the procedure proposed could be used for calculating the absolute rotational correction terms to polarizability derivatives. 

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