title: Arene Selectivity by a Flexible Coordination Polymer Host.
abstract: The coordination polymers [Ag4 (O2 CCF3 )4 (phen)3 ]⋅ phen⋅arene (1⋅phen⋅arene) (phen=phenazine; arene=toluene, p-xylene or benzene) have been synthesised from the solution phase in a series of arene solvents and crystallographically characterised. By contrast, analogous syntheses from o-xylene and m-xylene as the solvent yield the solvent-free coordination polymer [Ag4 (O2 CCF3 )4 (phen)2 ] (2). Toluene, p-xylene and benzene have been successfully used in mixed-arene syntheses to template the formation of coordination polymers 1⋅phen⋅arene, which incorporate o- or m-xylene. The selectivity of 1⋅phen⋅arene for the arene guests was determined, through pairwise competition experiments, to be p-xylene>toluene≈benzene>o-xylene>m-xylene. The largest selectivity coefficient was determined as 14.2 for p-xylene:m-xylene and the smallest was 1.0 for toluene:benzene.
authors.affiliation: Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK), Fax: (+44) 114-2229346.
authors.forename: James S
authors.initials: JS
authors.lastname: Wright
authors.affiliation: Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK), Fax: (+44) 114-2229346.|School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
authors.forename: Iñigo J
authors.initials: IJ
authors.lastname: Vitórica-Yrezábal
authors.affiliation: Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK.
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Thompson
authors.affiliation: Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK), Fax: (+44) 114-2229346. lee.brammer@sheffield.ac.uk.
authors.forename: Lee
authors.identifier: http://orcid.org/0000-0001-6435-7197
authors.initials: L
authors.lastname: Brammer
keywords: arene separation; coordination polymer; crystal engineering; powder diffraction; xylenes