MICROWAVE FOURIER TRANSFORM SPECTRA OF SMALL MOLECULES PRODUCED IN ELECTRIC DISCHARGES

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1992

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Ohio State University

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A pulsed electric discharge apparatus has been designed and incorporated with a cavity microwave Fourier transfrom spectrometer. Samples have been prepared both by reaction with metal from the electrodes and by decomposition of suitable precursors. Example metal compounds are AgCl and AgF; for the former the very high resolution of the instrument has besn used to improve greatly the precision of the $^{35}Cl$ quadrupole coupling constant. Examples of the latter have been the semi-stable molecules $SiF_{2}$ and FCCCN. For $SiF_{2}$ the $^{19}F$ magnetic hyperfine structure has been resolved, and has produced both spin-spin and spin-rotation coupling constants. For FCCCN we have made the first measurements of the $^{14}N$ quadrupole coupling constant.

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* Present address: Laboratorium f\""{u}r Physikalische Chemie, Eidgen\""{o}ssische Technische Hochschule, 8092 Z\""{u}rich, Switzerland. $\dagger$Present address: Faculty of Liberal Arts, Shizuoka University, Shizuoka 422, Japan.
Author Institution: Department of Chemistry, University of British Columbia

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