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Author: jon hougen

Displaying records 21 to 30 of 85 records.
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21. Ground and First Excited Torsional States of Acetamide
Published: 10/1/2004
Authors: Vadim V Ilyushin, E A Alekseev, S K Dyubko, I Kleiner, Jon Torger Hougen
Abstract: Recent progress in measuring, assigning and fitting the millimeter wave spectrum of the ground, first and second excited torsional states of the acetamide molecule CH3CONH2 is reported. New measurements of the acetamide spectrum have been carried out ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841797

22. Analysis and Fit of the Fourier-Transform Microwave Spectrum of the Two-Top Molecule N-methylacetamide
Published: 9/1/2004
Authors: N Ohashi, Jon Torger Hougen, R D. Suenram, Francis John Lovas, Y Kawashima, M Fujitake (Japan), J Pyka
Abstract: The jet-cooled Fourier-transform microwave spectrum of N-methylacetamide (CH3-NH-C(=O)-CH3), a molecule containing two methyl tops with relatively low barriers to internal rotation, has been recorded and fit to nearly experimental measurement uncerta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841790

23. Analysis and Fit of the Fourier Transform Microwave Spectrum of the Two-Top Molecule N-Methylacetamide
Published: 1/1/2004
Authors: N Ohashi, Jon Torger Hougen, R D. Suenram, Francis John Lovas, Y Kawashima, M Fujitake, J Pyka
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104065

24. Anomalous Splittings of Torsional Sublevels Induced by the Aldehyde Inversion Motion in the S^d1^ State of Acetaldehyde
Published: 1/1/2004
Authors: Y Chou, I Chen, Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103695

25. Ground and First Excited Torsional States of Acetamide
Published: 1/1/2004
Authors: Vadim V Ilyushin, E A Alekseev, S F Dyubko, I Kleiner, Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103875

26. Conformational Analysis of the Jet-Cooled Peptide Mimetic Ethylacetamidoacetate from Torsion-Rotation Spectra
Published: 9/1/2003
Authors: R J Lavrich, Angela R Hight Walker, David F Plusquellic, I Kleiner, R D. Suenram, Jon Torger Hougen, Gerald T Fraser
Abstract: Rotational spectra of two conformers of the dipeptide mimetic, ethyl acetamidoacetate, were measured in a molecular beam using a Fourier-transform microwave spectrometer. In each conformer, internal rotation of the acetyl methyl group gives rise to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841726

27. Rho-Axis-Method Hamiltonian for Molecules Having One Methyl Rotor and C^d1^ Point-Group Symmetry at Equilibrium
Published: 9/1/2003
Authors: I Kleiner, Jon Torger Hougen
Abstract: Two modifications of the rho-axis-method torsion-rotation Hamiltonian for fitting spectra of methyl top molecules belonging to the C-s point group at equilibrium which are required to treat molecules with C-1 equilibrium configurations are described: ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841688

28. Line Assignments and Global Analysis of the Tunneling-Rotational Microwave Absorption Spectrum of Dimethyl Methylphosphonate
Published: 3/1/2003
Authors: N Ohashi, J Pyka, G Y Golubiatnikow, Jon Torger Hougen, R D. Suenram, Francis John Lovas, A Lesarri, Y Kawashima
Abstract: Line assignments were carried out for about 600 Fourier transform microwave transitions for dimethyl methylphosphonate involving levels of all six symmetry species in the G^d18^ molecular symmetry group appropriate for three large-amplitude motions a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841658

29. Conformational Analysis of the Jet-cooled Peptide Mimetic Ethylacetamidoacetate from Torsion-Rotation Spectra
Published: 1/1/2003
Authors: R J Lavrich, Angela R Hight Walker, David F Plusquellic, I Kleiner, R D. Suenram, Jon Torger Hougen, Gerald T Fraser
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103962

30. Line Assignments and Global Analysis of the Tunneling-Rotation Microwave Absorption Spectrum of Dimethylmethylphosphonate
Published: 1/1/2003
Authors: N Ohashi, J Pyka, G Y Golubiatnikov, Jon Torger Hougen, R D. Suenram, Francis John Lovas, A Lesarri, Y Kawashima
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104066