Fig. 3

Intra-domain structure. a X-ray structure factors Sx(Q) of (ZIF-4-Co)(ZIF-62)(50/50) and (ZIF-4-Co)0.5(ZIF-62)0.5. b Corresponding X-ray pair distribution functions, D(r). Inset: refinement of (ZIF-4-Co)(ZIF-62)(50/50) against the published structure files for ZIF-62 and ZIF-4-Co. Fit—broken blue line. c X-ray structure factors of (ZIF-4-Co)0.5(ZIF-62)0.5 upon heating. d Pair distribution functions D(r) of (ZIF-4-Co)0.5(ZIF-62)0.5 upon heating, with the atom pairs that contribute most of the intensity in the labelled peaks indicated in the structural fragment (A–E)