STRUCTURE AND PROPERTIES OF $Ar\cdot O_{3}$ AND $Ar\cdot SO_{2}$ VAN DER WAALS MOLECULES
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Date
1979
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Ohio State University
Abstract
Molecular beam electric resonance spectroscopy was used to obtain radio frequency and microwave spectra of $Ar\cdot O_{3}$ and $Ar\cdot SO_{2}$ produced in nozzle expansions. The $Ar\cdot O_{3}$ properties include A=12685, B=1947, C=1716 MHz, $\mu_{a}= -.10, \mu_{b}= 0.0, \mu_{c}=0.46D$. The separation of Ar from the $O_{3}$ center of mass is 3.42 {\AA}, Similar properties foe Ar $SO_{2}$ are A=10124, B=1486, C=1319 MHz, $\mu_{a}=0.27, \mu_{b}=0.0, \mu_{c}=1.470$. The $Ar\cdot SO_{2}$ center of mass distance is $3.66$ {\AA}. The ozone molecule exhibits large amplitude angular motions within the complex. However, free rotation is not observed as indicated by the dipole moment components of the Complex equalling 90% of the $O_{3}$ moment. The beat equilibrium structure for $Ar\cdot O_{3}$ appears to be that which has the plane of $O_{3}$. perpendicular to the axis connecting Ar and the $O_{3}$ center of mass. The present $Ar\cdot SO_{2}$ data is consistent with internal motions and structure similar to $Ar\cdot O_{3}$.
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