ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The aim of the phase determination is formulated as a minimization of a function of estimated errors in the phases. It is concluded that a good phase-determining procedure in direct methods has to fulfil the following requirements. 1. The probability distributions of seminvariants used should contain the maximal amount of a priori structure information. 2. The whole information contained in probability distributions should be employed. 3. The choice of the starting set and the set of phase relations used should minimize Σ|FH|2 var φH. The procedures that are able to fulfil these requirements are described in the following papers [Hašek (1984). Acta Cryst. A40, 340-346, 346-350, 350-352].
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108767384000726
