Application notes on the use of softer X-rays for anomalous powder diffraction

Abstract

An in-vacuum diffractometer has been modified to collect powder diffraction data from a sample of promazine hydrochloride. Strong anomalous contrast has been observed at, or close to, the sulphur edge. Based on the data collected, a bespoke diffractometer has been designed that, together with minor changes to the geometry of the experiment, will enable the routine collection of powder data at absorption edges below 5.5 keV. © 2005 International Union of Crystallography Printed in Great Britain - all rights reserved.