A Non-Topological Mechanism for Negative Linear Compressibility

Simon Parsons, Mark Murrie, Jack Binns, Konstantin Kamenev, Katie Marriott, Garry McIntyre, Stephen Moggach

Research output: Contribution to journalArticlepeer-review

Abstract

Negative linear compressibility (NLC), the increase in a unit cell length with pressure, is a rare phenomenon in which hydrostatic compression of a structure promotes expansion along one dimension. It is usually a consequence of crystal structure topology. We show that the source of NLC in the Co(II) citrate metal-organic framework UTSA-16 lies not in framework topology, but in the relative torsional flexibility of Co(II)-centred tetrahedra compared to more rigid octahedra.
Original languageEnglish
Pages (from-to)7486-7489
JournalChemical Communications
Volume52
Issue number47
DOIs
Publication statusPublished - 13 May 2016

Keywords

  • Negative linear compressibility
  • coordination chemistry
  • Metal organic framework
  • high pressure
  • CRYSTALLOGRAPHY

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