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Search Publications by: David F. Plusquellic (Fed)

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Displaying 76 - 100 of 115

Conformational Analysis of the Jet-Cooled Peptide Mimetic Ethylacetamidoacetate from Torsion-Rotation Spectra

September 1, 2003
Author(s)
R J. Lavrich, Angela R. Hight Walker, David F. Plusquellic, I Kleiner, R D. Suenram, Jon T. Hougen, Gerald T. Fraser
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

Experimental Studies of Peptide Bonds: Identification of the C 7 eq Conformation of the Alanine Dipeptide Analog N-Acetyl-Alanine N'-Methylamide From Torsion-Rotation Interactions

January 1, 2003
Author(s)
R J. Lavrich, David F. Plusquellic, R D. Suenram, Gerald T. Fraser, Angela R. Hight Walker, M J. Tubergen
Rotational spectra of the bio-mimetic molecule, alanine dipepitide and the double 15N( 15N 2) isotopomer have been observed using a pulsed-molecular-beam Fourier transform microwave spectrometer. The spectra reveal large tunneling splittings from the

High Resolution Spectroscopic Studies of 1-(1-Naphthyl)ethylamine in S 0 and S 1 : Exploring the Dependence of Circular Dichroism on Conformational Structure

October 1, 2002
Author(s)
David F. Plusquellic, R J. Lavrich, T Petralli-Mallow, S Davis, T M. Korter, R D. Suenram
Rotationally-resolved spectra of gas-phase samples of 1-(1-naphthyl) -ethylarnine (NEA) and amine deuterated forms have been obtained in the microwave and ultraviolet regions, with the isotopomers initially prepared in their zero-pointvibrational levels by

Fourier Transform Microwave Spectrum and Ab Initio Study of Dimethyl Methylphosphonate

January 1, 2002
Author(s)
R D. Suenram, Francis J. Lovas, David F. Plusquellic, A Lesarri, Y Kawashima, J O. Jensen, A C. Samuels
The rotational spectrum of dimethyl methylphophonate (DMMP) has been studied using a pulsed molecular beam Fourier transform microwave spectrometer. The spectrum is complicated by the internal rotation motions of the three methyl tops in the molecule as

The Conformational Structures and Dipole Moments of Ethyl Sulfide in the Gas Phase

August 1, 2001
Author(s)
David F. Plusquellic, R D. Suenram, B Mate, J O. Jensen, A C. Samuels
The pure rotational spectrum of ethyl sulfide has been measured from 12 gHz to 21 GHz in a 1 K Jet-cooled expansion using a Fourier-transform microwave (FTMW) spectrometer. Prominent features in the spectrum are assigned to transitions from three

Rotational Signatures of Chemical Agents and Related Compounds

January 1, 2000
Author(s)
R D. Suenram, Angela R. Hight Walker, Gerald T. Fraser, David F. Plusquellic, R S. DaBell, Pamela M. Chu, George C. Rhoderick, A C. Samuels, J O. Jensen, Pavol Krivosik, J M. Lochner
The rotational spectra of more than twenty different chemical-warfare agents, precursors, and decomposition products have been studied using the technique of Fourier-Transform MicroWave (FTMW) spectroscopy. The compounds studied include the four common G