Practical applications of averages and differences of Friedel opposites.

The article offers information on a study which aims to investigate the intensity difference in Friedel opposites on the analysis of small-molecule single-crystal structure using the Patterson functions. It says that Patterson functions give clear view with regards to resonant scattering of the crystal structures and on the difference on the model and observed intensities. The study used least square refinement on the space group determination in the crystal structure.