THE INFRARED ABSORPTION INTENSITIES OF ETHYLENE AND SOME DEUTERATED ETHYLENES
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Date
1955
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Publisher
Ohio State University
Abstract
Integrated infrared absorption intensities of the fundamental and some overtone and combination bands of $C_{2}H_{4}$, $C_{2}D_{4}$, and cis, trans, and asymmetric $C_{2}D_{2}H_{2}$ were measured using experimental techniques similar to those of Penner and Weber. No attempt was made to interpret data on the overtone and combination bands or those on asymmetric $C_{2}D_{2}H_{2}$. The interpretation of data on the fundamental bands of the other four isotopes was based on the fact that the derivatives of the electric moment with respect to the symmetry coordinates should be equal for the isotopes. Through this comparison, it was possible to eliminate some of the ambiguity ari\’{s}ing from the uncertainties in sign introduced by taking the square root of the intensities. Values of bond moment and effective charge calculated in this manner are more reliable than those obtained previously and provide the basis for a re-examination of the bondmoment hypothesis.
Description
Author Institution: School of Chemistry, University of Minnesota