Unit-cell determination from randomly oriented electron-diffraction patterns

作者：Jiang Linhua^*; Georgieva Dilyana; Zandbergen Henny W; Abrahams Jan Pieter

来源：Acta Crystallographica Section D-Biological Crystallography, 2009, 65(7): 625-632.

DOI：10.1107/S0907444909003163

Unit-cell determination is the first step towards the structure solution of an unknown crystal form. Standard procedures for unit-cell determination cannot cope with data collections that consist of single diffraction patterns of multiple crystals, each with an unknown orientation. However, for beam-sensitive nanocrystals these are often the only data that can be obtained. An algorithm for unit-cell determination that uses randomly oriented electron-diffraction patterns with unknown angular relationships is presented here. The algorithm determined the unit cells of mineral, pharmaceutical and protein nanocrystals in orthorhombic high- and low-symmetry space groups, allowing (well oriented) patterns to be indexed.

• 出版日期2009-7