Experimental evidence of negative linear compressibility in the MIL-53 metal–organic framework family

Journal article (2014)
Department
ChemE/Catalysis Engineering (AS) (TU Delft)
Copyright: © 2014 RSC
DOI: https://doi.org/doi:10.1039/C4CE00436A
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Published Date

24-03-2014

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Source:

CrystEngComm, 17 (2), 2014

ISSN:

1466-8033

Faculty

Applied Sciences

Department

ChemE/Catalysis Engineering

Abstract

We report a series of powder X-ray diffraction experiments performed on the soft porous crystals MIL-53(Al) and NH2-MIL-53(Al) in a diamond anvil cell under different pressurization media. Systematic refinements of the obtained powder patterns demonstrate that these materials expand along a specific direction while undergoing total volume reduction under an increasing hydrostatic pressure. The results confirm for the first time the negative linear compressibility behaviour of this family of materials, recently predicted from quantum chemical calculations.

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