Dear all Lately i have found my crystals to be pseudomerohedrally twinned with a twin fraction of 0.22..but on doing twin refinement nothing much is changing in terms of statistics as compared to the previously solved data which did not include twin refinement (in present case the data is solved at 2.5A with R/Rfree of 22 and 25)..i may be wrong but i have heard that the data statistics generally improves after twin refinement..can anybody please explain.
-- Regards Faisal School of Life Sciences JNU