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On the application of phase relationships to complex structures. XXI. An extension to the MAGEX procedure (1982)

Shao-Hui, Z. ; Woolfson, M. M.

[S.l.] : International Union of Crystallography (IUCr)

Acta crystallographica 38 (1982), S. 683-685

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ISSN: 1600-5724

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Chemistry and Pharmacology , Geosciences , Physics

Notes: In the previously described MAGEX procedure [Hull, Viterbo, Woolfson & Zhang Shao-Hui (1981). Acta Cryst. A37, 566-572] trial phases found from a ψ map were refined by a parameter-shift process which maximized a function depending on the overall satisfaction of the triple-phase relationships. Advantages have been found in using a different function which has a somewhat stronger physical basis. Two algorithms are described which may be used either for centrosymmetric structures or for individual reflexions which can take only restricted phase values.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0567739482001387

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