Ellipsoidal models of MIL-140C obtained from the merged data sets. (a)–(e) Merged (m) data sets 1m to 5m, respectively and (f) merged data set 3m after restraining and constraining the ADPs. ADPs are shown at the 50% probability level. Cubes correspond to NPD atoms. Zr atoms are shown in cyan, O in red and C in grey. H atoms have been omitted for clarity.