SIR88 – a direct-methods program for the automatic solution of crystal structures
- 1 August 1989
- journal article
- Published by International Union of Crystallography (IUCr) in Journal of Applied Crystallography
- Vol. 22 (4) , 389-393
- https://doi.org/10.1107/s0021889889004103
Abstract
SIR88 is an integrated package of computer programs for the solution of crystal structures. The package is based on the estimation of one- and two-phase structure seminvariants and three- and four-phase structure invariants according to the theory of representations [Giacovazzo (1977). Acta Cryst. A33, 933–944; (1980). Acta Cryst. A36, 362–372]. The program works in all the space groups and in most cases it is able to provide the correct solution without user intervention. Some prior information like the availability of a partial structure or of pseudotranslational symmetry is easily exploited to obtain the structure solution.Keywords
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