P. A. Chater, A. T. Cairns-for-assistance-with-data-collection, and C. M. , thank the French National Research Agency (ANR project: HOPFAME ANR-13-BS07-0002-01) and the Foundation de l'Orangerie for funding. The calculations have been performed using the HPC resources from GENCI (CINES, access to beamline I15 (EE9691) that contributed to the results presented here

K. E. Furukawa, M. Cordova, O. M. O-'keeffe, and . Yaghi, V. gratefully acknowledge the FWO for funding (aspirant grant) Notes and references 1 H, Science, pp.341-974, 2013.
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