Selective Recovery of Dynamic Guest Structure in a Nanoporous Prussian Blue through in Situ X-ray Diffraction:  A Differential Pair Distribution Function Analysis

We use in situ X-ray diffraction to obtain data suitable for differential PDF analysis, providing unique insight into the structure of weakly bound, dynamic N2 molecules in the Prussian blue system Mn3Co (CN) 62. xN2. The differential PDF shows a distributed orientation of N2 molecules constrained to sites centered about the (1/4, 1/4, 1/4) positions within the pores. The results show a subtle response of the framework to guest loading which corresponds principally to the perturbation of the Mn ion coordination.