dc.creator Vasilatou, Konstantina en_US dc.creator Michaud, Julie M. en_US dc.creator Grassi, Guido en_US dc.creator Baykusheva, Denitsa en_US dc.creator Merkt, Frederic en_US dc.date.accessioned 2012-07-09T19:39:20Z dc.date.available 2012-07-09T19:39:20Z dc.date.issued 2012 en_US dc.identifier 2012-WI-05 en_US dc.identifier.uri http://hdl.handle.net/1811/52528 dc.description Author Institution: Laboratorium fur Physikalische Chemie, ETH Zurich, CH-8093 Zurich, Switzerland en_US dc.description.abstract The spectroscopic information available on the cyclopropene radical cation is limited to that contained in low-resolution He I photoelectron spectra , \emph{J.~Chem.~Phys.} \textbf{57}, 1758 (1972).}${}^{,}$, \emph{Helv.~Chim.~Acta} \textbf{53}, 1677 (1970).}. To better characterize the structure of this cation, we have recently measured high-resolution PFI-ZEKE photoelectron spectra of c-C$_3$H$_4$ and several of its deuterated isotopomers in the vicinity of the adiabatic ionization threshold. Our new data include fully rotationally resolved spectra of the origin band of the $\widetilde{\rm X}^+\leftarrow\widetilde{\rm X}$ transition of c-C$_3$H$_4$ and spectra of the low-vibrational levels of c-C$_3$H$_4$ and the deuterated isotopomers recorded at lower resolution. Because our efforts at synthesizing the partially deuterated isotopomers always resulted in mixtures of several isotopomers, differing in their number of D atoms and in the location of these atoms, the analysis of the isotopic shifts turned out to be challenging. Combining the information contained in the rotational structure of the origin band of c-C$_3$H$_4$ with the ionization energies of the isotopomers measured by photoionization mass spectrometry and the vibrational structure observed in the PFI-ZEKE spectra of the mixtures of deuterated isotopomers, we were able to draw conclusions on the structure of the cyclopropene radical cation based solely on experimental data. The adiabatic ionization energy of c-C$_3$H$_4$ was determined to be $77931.8(5)\,\rm {cm}^{-1}$. en_US dc.language.iso en en_US dc.publisher Ohio State University en_US dc.title HIGH-RESOLUTION PHOTOELECTRON SPECTROSCOPIC STUDY OF CYCLOPROPENE (c-C$_3$H$_4$) en_US dc.type Article en_US
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