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Enantiomorph determination using inverse reference‐beam diffraction images

Enantiomorph determination using inverse reference‐beam diffraction images It is shown that enantiomorph structures of a noncentrosymmetric crystal can be determined, in the absence of anomalous diffraction signals, by measuring two series of reference‐beam oscillation diffraction patterns related by an inverse‐beam geometry. The corresponding intensities of the Friedel pairs recorded on the two sets of images exhibit the characteristic three‐beam interference effects that provide the unambiguous phase information. The experimental arrangement and the data‐analysis procedure are demonstrated through an experimental example on tetragonal lysozyme. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section A: Foundations and Advances Wiley

Enantiomorph determination using inverse reference‐beam diffraction images

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Publisher
Wiley
Copyright
Copyright © 2000 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0108-7673
eISSN
1600-5724
DOI
10.1107/S0108767300000234
Publisher site
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Abstract

It is shown that enantiomorph structures of a noncentrosymmetric crystal can be determined, in the absence of anomalous diffraction signals, by measuring two series of reference‐beam oscillation diffraction patterns related by an inverse‐beam geometry. The corresponding intensities of the Friedel pairs recorded on the two sets of images exhibit the characteristic three‐beam interference effects that provide the unambiguous phase information. The experimental arrangement and the data‐analysis procedure are demonstrated through an experimental example on tetragonal lysozyme.

Journal

Acta Crystallographica Section A: Foundations and Advances – Wiley

Published: May 1, 2000

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