dc.creator Grimminger, Robert A. en_US dc.creator Clouthier, Dennis J. en_US dc.creator Tarroni, Riccardo en_US dc.date.accessioned 2011-07-12T17:39:07Z dc.date.available 2011-07-12T17:39:07Z dc.date.issued 2011 en_US dc.identifier 2011-MF-06 en_US dc.identifier.uri http://hdl.handle.net/1811/49651 dc.description Author Institution: Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055, USA; Dipartimento di Chimica Fisica ed Inorganica, Universita di Bologna, 40136 Bologna, Italy en_US dc.description.abstract The previously unobserved H$_2$PS free radical has been detected by laser-induced fluorescence (LIF) techniques. H$_2$PS (and D$_2$PS) were produced in a pulsed discharge jet using a precursor gas mixture of Cl$_3$PS vapor and hydrogen (or deuterium) in high pressure argon. Our $\italic{ab}$ $\italic{initio}$ predictions of the ground and excited state frequencies and excitation energy are in good agreement with the results obtained by vibrational analysis of the LIF and single vibronic level (SVL) emission spectra. High-resolution spectra of the hybrid $0^0_0$ bands of H$_2$PS and D$_2$PS were analyzed by band contour methods to obtain approximate ground and excited state rotational constants and molecular structures. The electronic transition involves promotion of an electron from the $\pi$ to the $\pi^*$ orbital and is assigned as $\~{B} ^2$A$^{\prime}-\~{X} ^2$A$^{\prime}$. The results will be discussed in comparison to $\italic{ab}$ $\italic{initio}$ predictions and the spectra of other X$_2$PS radicals recently studied in our laboratory. en_US dc.language.iso en en_US dc.publisher Ohio State University en_US dc.title DETECTION OF THE H$_2$PS FREE RADICAL BY LASER SPECTROSCOPY en_US dc.type Article en_US dc.type Image en_US dc.type Presentation en_US
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