POTENTIAL ENERGY CONSTANTS FOR $NF_{2}H$ AND $NF_{2}D^{\ast}$
Loading...
Date
1964
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
From the infrared spectral data of gaseous difluoramine ($NF_{2}H$) and difluoramine-d ($NF_{2)D$), the potential energy constants for the two molecules have been obtained. The N-H (or N-D) and N-F stretching force constants are respectively 5.6474 and $4.0681 md/{\AA}$. These values are consistent with the larger N-H (or N-D) and N-F distances measured from microwave experiments for these molecules compared to the corresponding distances in $NH_{3} (or ND_{3})$ and $NF_{3}$. The constants for the F-N-H (or F-N-D) and H-N-H (or D-N-D) angle bending are respectively 1.0726 and $1.9000 md {\AA}/rad^{2}$. The coupling between the N-H (or N-D) stretching and the F-N-H (or F-N-D) bending modes is rather high, according to the potential energy constant calculation. The determination of the rotational distortion constants, mean square amplitudes, and thermodynamic properties for the two molecules is in progress.
Description
$^{\ast}$ This work was part of a research program which has been aided by a grant from the National Science Foundation.
Author Institution: Department of Physics, Spectroscopy Laboratory Illinois Institute of Technology
Author Institution: Department of Physics, Spectroscopy Laboratory Illinois Institute of Technology