Skip to main content

Patterson function and δ recycling: derivation of the phasing equations

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Two phasing equations based on the Fourier syntheses δP = T −1[(E 2−〈E 2〉)exp(iΦ)] and δM = T −1[(E−〈E〉)exp(iΦ)] were recently described [Rius (2012). Acta Cryst. A68, 77–81] (E is the quasi‐normalized structure factor and 〈E〉 is the average over all reflections). These equations were found by comparison with the direct methods origin‐free modulus sum function and constitute the core of the `δ recycling' phasing procedure. The derivation of these phasing equations from the minimization of a residual (R P) between two differently calculated density functions (one of them including the positivity constraint) is shown.

Document Type: Short Communication

DOI: http://dx.doi.org/10.1107/S0108767312008768

Affiliations: Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, 08193-Bellaterra, Catalonia, Spain

Publication date: May 1, 2012

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more