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ELECTRIC DIPOLE MOMENTS AND $^{14}N$ NUCLEAR QUADRUPOLE HYPERFINE STRUCTURE OF TWO CONFORMERS OF GLYCINE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/29682

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Title: ELECTRIC DIPOLE MOMENTS AND $^{14}N$ NUCLEAR QUADRUPOLE HYPERFINE STRUCTURE OF TWO CONFORMERS OF GLYCINE
Creators: Grabow, Jens-Uwe; Suenram, R. D.; Lovas, F. J.; Kawashima, Y.; Fraser, G. T.; Hirota, Eizi
Issue Date: 1995
Abstract: The mm-wave spectra for two conformations of glycine have been reported previously. Following the initial laboratory study of $conformer II^{1,2}$ laboratory spectra of conformation $I^{3}$ have been observed. With the aid of theoretical $studies^{4}$ conformer I has been determined to be the lowest energy form. During recent years a number of interstellar searches for glycine have been based on these initial studies. In the present work we report new laboratory studies of conformer I and II at cm-wave lenghts. The measurements were made with a pulsed supersonic-jet. Fourier-Transform microwave Fabry Perot-resonator spectrometer, equipped with a heated nozzle or laser-ablation nozzle for the vaporization of the solid-phase glycine. A number of low-J rotational transitions of the normal species, both mono $-^{13}C$ species, $^{15}N$ species and the $CD_{2}$ species of conformers I and II have been measured, with the $^{14}N$ nuclear quadrupole hyperfine structure resolved. In addition to the rotational and centrifugal distortion analysis we have determined the $^{14}N$ nuclear quadrupole coupling tensor and the electric dipole moments.
URI: http://hdl.handle.net/1811/29682
Other Identifiers: 1995-RI-12
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