Structural Effects of Solvents on the Breathing of Metal–Organic Frameworks: An In Situ Diffraction Study


  • We thank the STFC for provision of beam time at the Daresbury SRS. We are also indebted to the ESRF in Grenoble for providing beam time and for the assistance of Yaroslav Filinchuk during the experiments in collecting powder XRD data.


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Breathing space: Time-resolved diffraction studies of the breathing of metal–organic frameworks in the presence of liquids reveal rapid exchange of one guest molecule by another. In some cases this occurs by direct exchange (as shown for water by pyridine), in others with the transient appearance of crystalline intermediates corresponding to partially expanded forms.