Neutron Compton scattering from selectively deuterated acetanilide

Wanderlingh, U. N., Fielding, Andrew L., & Middendorf, H. D. (1997) Neutron Compton scattering from selectively deuterated acetanilide. Physica B: Condensed Matter, 241-243, pp. 1169-1171.

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With the aim of developing the application of neutron Compton scattering (NCS) to molecular systems of biophysical interest, we are using the Compton spectrometer EVS at ISIS to characterize the momentum distribution of protons in peptide groups. In this contribution we present NCS measurements of the recoil peak (Compton profile) due to the amide proton in otherwise fully deuterated acetanilide (ACN), a widely studied model system for H-bonding and energy transfer in biomolecules. We obtain values for the average width of the potential well of the amide proton and its mean kinetic energy. Deviations from the Gaussian form of the Compton profile, analyzed on the basis of an expansion due to Sears, provide data relating to the Laplacian of the proton potential. (C) 1998 Elsevier Science B.V. All rights reserved.

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ID Code: 59153
Item Type: Journal Article
Refereed: Yes
Keywords: Neutron Compton scattering, Acetalinide, Peptide bond
DOI: 10.1016/s0921-4526(97)00818-1
ISSN: 0921-4526
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > CONDENSED MATTER PHYSICS (020400) > Condensed Matter Physics not elsewhere classified (020499)
Divisions: Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > Physics
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 1998 Elsevier Science B.V.
Deposited On: 16 Apr 2013 23:44
Last Modified: 17 Apr 2013 00:03

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