Four examples of the refinement of twinned structures are discussed. These structures illustrate three different types of twins: twinning by merohedry, pseudo-merohedry and non-merohedral twins. How the twinning was detected, how the structures were solved and how they were refined are shown in this paper. The difference between a refinement as a disordered model and a twinned model is illustrated. Sometimes the twin law was necessary to solve the structure, while in the other examples the twinning was first recognized during refinement of the structures. Finally, a list of `characteristic warning signs' is presented which are indicative of possible twinning.
No takes yet. Share an insight, caveat, or question.
Herbst‐Irmer et al. (1998) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: