Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 113, Issue 16, Pages 6592-6597Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1311392
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In general, when computing intensities for polyatomics, one has to interpolate the dipole moment function obtained from ab initio calculations. For some high overtones of the water molecule, the computed intensities can be very sensitive to the way in which the interpolation is done. Our previous analytic representation [H. Partridge and D. W. Schwenke, J. Chem. Phys. 106, 4618 (1997)] was not adequate. We show that stable results can be obtained, and these results are in much improved agreement with experiment. We also test the importance of core electron correlation on intensities, and find the effect to be negligible. Of the existing water dipole moment functions in the literature, the present one is the most accurate. (C) 2000 American Institute of Physics. [S0021-9606(00)30440-8].
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