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J Am Chem Soc. 2012 Jul 25;134(29):11940-3. doi: 10.1021/ja305196u. Epub 2012 Jul 10.

Negative linear compressibility of a metal-organic framework.

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1
Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, United Kingdom.

Abstract

A 3D hybrid zinc formate framework, [NH(4)][Zn(HCOO)(3)], possessing an acs topology, shows a high degree of mechanical anisotropy and negative linear compressibility (NLC) along its c axis. High-pressure single-crystal X-ray diffraction studies and density functional theory calculations indicate that contraction of the Zn-O bonds and tilting of the formate ligands with increasing pressure induce changes in structure that result in shrinkage of the a and b axes and the NLC effect along c.

PMID:
22758218
DOI:
10.1021/ja305196u
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