title: Highly selective CO2vs. N2adsorption in the cavity of a molecular coordination cage.
abstract: Two M8L12cubic coordination cages, as desolvated crystalline powders, preferentially adsorb CO2over N2with ideal selectivity CO2/N2constants of 49 and 30 at 298 K. A binding site for CO2is suggested by crystallographic location of CS2within the cage cavity at an electropositive hydrogen-bond donor site, potentially explaining the high CO2/N2selectivity compared to other materials with this level of porosity.
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. m.d.ward@sheffield.ac.uk r.dawson@sheffield.ac.uk.
authors.forename: James S
authors.initials: JS
authors.lastname: Wright
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. m.d.ward@sheffield.ac.uk r.dawson@sheffield.ac.uk.
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Metherell
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. m.d.ward@sheffield.ac.uk r.dawson@sheffield.ac.uk.
authors.forename: William M
authors.identifier: http://orcid.org/0000-0001-6540-6341
authors.initials: WM
authors.lastname: Cullen
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. m.d.ward@sheffield.ac.uk r.dawson@sheffield.ac.uk.
authors.forename: Jerico R
authors.initials: JR
authors.lastname: Piper
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. m.d.ward@sheffield.ac.uk r.dawson@sheffield.ac.uk.
authors.forename: Robert
authors.identifier: http://orcid.org/0000-0003-4689-4428
authors.initials: R
authors.lastname: Dawson
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. m.d.ward@sheffield.ac.uk r.dawson@sheffield.ac.uk.
authors.forename: Michael D
authors.identifier: http://orcid.org/0000-0001-8175-8822
authors.initials: MD
authors.lastname: Ward