MICROWAVE SPECTRUM AND STRUCTURE DETERMINATION OF THE CCP AND $^{13}$C$^{13}$CP RADICALS (X$^{2}\Pi_{r}$)
Loading...
Date
2008
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The microwave spectrum of the CCP and $^{13}$C$^{13}$CP radicals (X$^{2}\Pi_{r}$) has been measured using Fourier Transform techniques. These species were created by the reaction of a mixture of PCl$_3$ vapor and acetylene diulted in argon carrier gas and a DC glow discharge. Two rotational transitions each were measured in the frequency range of 18 to 32 GHz. The lambda-doublets of the $\Omega$ = 1/2 component of CCP and $^{13}$C$^{13}$CP were each split by phosphorus hyperfine interactions. For $^{13}$C$^{13}$CP, additional hyperfine splittings were observed due to both $^{13}$C atoms, creating several doublets of doublets. These data were analyzed with a Hamiltonian incorporating three nuclear spins. The data were combined with millimeter/submillimeter measurements for CCP and $^{13}$C$^{13}$CP, and fit with a case (c) Hamiltonian, and effective rotational, lambda-doubling, and phosphorus and carbon-13 hyperfine constants were determined.
Description
Author Institution: Department of Chemistry, Department of Astronomy, and Steward Observatory, University of Arizona, Tucson, AZ, 85721; Steward Observatory, University of Arizona, Tucson, AZ, 85721; Department of Chemistry, University of Kentucky, Lexington, KY, 40506; Department of Chemistry, Department of Astronomy, and Steward Observatory, University of Arizona, Tucson, AZ, 85721