title: A non-topological mechanism for negative linear compressibility.
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.
authors.affiliation: EaSTCHEM School of Chemistry and Centre for Science at Extreme Conditions, The University of Edinburgh, Joseph Black Building, The King's Buildings, West Mains Road, Edinburgh EH9 3FJ, UK. S.Parsons@ed.ac.uk.
authors.forename: Jack
authors.initials: J
authors.lastname: Binns
authors.forename: Konstantin V
authors.initials: KV
authors.lastname: Kamenev
authors.forename: Katie E R
authors.initials: KE
authors.lastname: Marriott
authors.forename: Garry J
authors.initials: GJ
authors.lastname: McIntyre
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Moggach
authors.forename: Mark
authors.initials: M
authors.lastname: Murrie
authors.forename: Simon
authors.initials: S
authors.lastname: Parsons