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You searched on: Author: francis lovas

Displaying records 11 to 20 of 158 records.
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11. Microwave Spectrum of 1,2-Propanediol
Published: 9/1/2009
Authors: Francis John Lovas, David F Plusquellic, Brooks Pate, Justin L. Neill, Matt T. Muckle, Anthony J. Remijan
Abstract: The microwave spectrum of the sugar alcohol 1,2-propanediol (CH3CHOHCH2OH) has been measured over the frequency range 6.5 GHz to 25.0 GHz with several pulsed-beam Fourier-transform microwave spectrometers. Seven conformers of 1,2-propanediol have be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902388

12. Microwave Spectra of Molecules of Astrophysical Interest XXVI. Acetic Acid (CH^d3^COOH)
Published: 2/19/2008
Authors: Vadim V Ilyushin, I Kleiner, Francis John Lovas
Abstract: The microwave spectrum of acetic acid is critically reviewed and supplemented with spectral frequency calculations derived from the rotation-torsion analysis. A simultaneous analysis of the torsional ground state, vt = 0, and first and second torsio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841097

13. Reinvestigation of the Microwave Spectrum of 2-Methylmalonaldehyde
Published: 1/11/2008
Authors: Vadim V Ilyushin, E A Alekseev, Y C Chou, Y-C Hsu, Jon Torger Hougen, Francis John Lovas, L B Picaux
Abstract: The molecule 2-methylmalonaldehyde (2-MMA) exists in the gas phase as a six-membered hydrogen-bonded ring [HO-CH=C(CH3)-CH=O] and exhibits two large-amplitude motions, an intramolecular hydrogen transfer and a methyl torsion. The former motion is in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841130

14. Detection of Interstellar Cyanoformaldehyde (CNCHO)
Published: 12/31/2007
Authors: Francis John Lovas, Anthony J. Remijan, Jan M. Hollis, Wilmer D. Stork, Phil R. Jewell, D Meier
Abstract: Cyanoformaldehyde (CNCHO) has been detected toward the star-forming region Sagittarius B2(N) with the 100 m Green Bank Telescope (GBT) by means of four P-branch rotational transitions in emission, the 7(0, 7) 6(1, 6) at 8.6GHz, the 8(0, 8) 7(1, 7) at ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905305

15. Microwave Spectra of Molecules of Astrophysical Interest: XXV. Methylamine
Published: 9/5/2007
Authors: Vadim V Ilyushin, Francis John Lovas
Abstract: The microwave spectrum of methylamine in its ground vibrational state is critically reviewed and supplemented with spectral frequency calculations derived from rotation-internal rotation-inversion analysis. The review covers frequency range from 1 GH ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841070

16. Detection of C^d8^H^u-^ and Comparison With C^d8^H Toward IRC+10216 With the Green Bank Telescope
Published: 6/27/2007
Authors: A Remijan, J M Hollis, Francis John Lovas, M A Cordiner, J Millar, A J Markwick-Kemper, P R Jewell
Abstract: We report the detection of new transitions of octatetraynyl(C8H) toward the circumstellar envelopeIRC+10216 using data taken with the RobertC.Byrd 100m Green Bank Telescope(GBT). In addition, we report 5 transitions from Ku-, K- and Q-band that have ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841086

17. Nonthermal continuum toward Sagittarius B2(N-LMH)
Published: 4/11/2007
Authors: J M Hollis, P R Jewell, A Remijan, Francis John Lovas
Abstract: An analysis of continuum antenna temperatures observed in theGBTspectrometer bandpasses is presented for observations toward Sgr B2(N-LMH). Since 2004, we have identified four new prebiotic molecules toward this source by means of rotational transiti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841044

18. The Microwave Spectrum of a Two-Top Peptide Mimetic: The N-Acetyl Alanine Methyl Ester Molecule
Published: 9/14/2006
Authors: I Kleiner, J Demaison, David F Plusquellic, R D. Suenram, R J Lavrich, Francis John Lovas, Gerald T Fraser, Vadim V Ilyushin
Abstract: Rotational spectra of the ground torsional state of the N-acetyl alanine methyl ester molecule, a derivative of the alanine dipeptide biomimetic molecule, have been measured using a mini Fourier transform spectrometer between 10 and 20 GHz as part of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840966

19. Fourier Transform Microwave Spectroscopy of Isotopically Substituted Diacetylenes: rs-Structure, Quadrupole Coupling, and Anisotropic Nuclear Spin-Spin Interaction
Published: 9/8/2006
Authors: Francis John Lovas, R D. Suenram, Keiji Matsumura, Takehiko Tanakac
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841032

20. Microwave Spectrum and Structure of Furfural
Published: 9/8/2006
Authors: R A Motiyenkoa, E A Alekseev, S F Dyubkoa, Francis John Lovas
Abstract: The microwave spectrum of furfural was investigated in the frequency range 7 GHz to 21 GHz and 49 GHz to 330 GHz. The ground and first torsional state of trans-furfural and ground state of cis-furfural were assigned and analyzed. A total of 1720 rota ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841030



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