MICROWAVE STUDIES OF 2-CHLOROACRYLONITRILE AND METHYLENE CYANIDE
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Date
1974
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The microwave spectrum of 2-chloroacrylonitrile has been studied in the 26.5 - 40.0 GHz region. Both a- and b-type rotational transitions have been measured and assigned for both chlorine isotopes. The ground state rotational constants for $CH_{2} = C^{35}$Cl(CN) are (in MHz) $A = 6973.25$, $B = 3148.15$ and $C = 2165.94$. The rotational constants compare exceptionally well with those calculated from the structures of vinyl cyanide$^{1}$ and vinyl $chloride.^{2}$ The microwave spectrum of mathylene cyanide$^{3}$ has been reinvestigated and the distortion effects of $CH_{2}$(CN)$_{2}$ and $CH_{2} = $C Cl(CN) have been studied. For $CH_{2}$(CN)$_{2}$ transitions up to $J = 62$ have been measured. The quartic distortion constants for $CH_{2}$(CN)$_{2}$ are (In MHz): $\Delta J = (1.855455 \pm 0.014) \times 10^{-3}$, $\Delta JK = (-6.79218 \pm 0.027) \times 10^{-2}$, $\Delta K = (8.621623 \pm 0.013) \times 10^{-1}$, $\delta J = (4.892607 \pm 0.016) \times 10^{-4}$ and $\delta_{k} = (6.7501 \pm 0.29) \times 10^{-3}$, Quoted errors are twice the standard deviations.
Description
Author Institution: Department of Physics and Department of Chemistry, Mississippi State University