HIGH RESOLUTION LASER SPECTROSCOPY OF $CaCH_{3}$ AND $SrCH_{3}$
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Date
1987
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Ohio State University
Abstract
We have observed the organometallic tree radicals $CaCH_{3}$ and $SrCH_{3}$, produced by the gas phase reaction of Ca or Sr metal vapor with $Hg(CH_{3})_{2}$and several other CH3 containing oxidants. the positions of the $\bar{A}^{2}E-\bar{X}^{2}A_{1}$ and $\bar{B}^{2}A_{1}-\bar{X}^{2}A_{1}$ transitions have been determined as well as several vibrational frequencies. An upper limit for the bond dissociation energy of 46 kcal/mol (43 kcal/mol) has been determined for $CaCH_{3} (SrCH_{3})$ from a predissociation in the $\bar{A}^{2}E$ state. The $\bar{A}^{2}E-\bar{X}^{2}A_{1}$ transition of CaCH3 has been studied at rotational resolution. Analysis of the spectrum of this prolate symmetric top yields a Ca-C bond length of 2.35 {\AA}.
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Author Institution: Department of Chemistry, University of Arizona