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Title:THE JET-COOLED ROTATIONAL SPECTRUM OF GLYCINAMIDE, AN AMINOACID PRECURSOR
Author(s):Alonso, Elena R.
Contributor(s):Alonso, José L.; Guillemin, J.-C.; Kisiel, Zbigniew; Kolesniková, Lucie
Subject(s):Mini-symposium: ALMA's Molecular View
Abstract:The glycinamide chem{H_2NCH_2CONH_2}, considered as one of the possible precursors of glycine, has been generated in the gas phase via laser ablation of glycinamide hydrochloride. The vaporized products were seeded in neon, expanded adiabatically into the vacuum chamber of the spectrometer and probed by broadband chirped pulsed Fourier transform microwave spectroscopy. The most stable conformer is stabilized by an intramolecular hydrogen bonding interaction between the lone pair on the nitrogen in the amine group and the H-N bond in the amide group was observed in accordance with the previous millimeter wave study footnote{Z.Kisiel, E.Białkowska-Jaworska,L.Pszcz'{o}łkowski,J.C.Guillemin, 21st HRMS, Pozna'{n}, 2010.}. Glycinamide possesses two $^{14}$N nuclei with a nuclear quadrupole moment I=1, which give rise to a complex hyperfine structure. We took advantage of the higher resolution of our narrowband LA-MB-FTMW spectrometer footnote{C.Bermudez, S. Mata, C.Cabezas, and J.L.Alonso, Angew. Chem. 2014, 126, 11195–11198.} to fully resolve the nuclear quadrupole hyperfine structure. More than 90 nuclear quadrupole hyperfine components belonging to 5 different rotational transitions were analyzed. This provides a definitive evidence to establish the most stable observed conformer.
Issue Date:6/22/2017
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/97010
DOI:10.15278/isms.2017.RF09
Date Available in IDEALS:2017-07-27


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