title: Carbon dioxide as a solubility "switch" for the reversible dissolution of highly fluorinated complexes and reagents in organic solvents: application to crystallization.
abstract: Highly fluorinated organic or organometallic solid compounds can be made to dissolve in liquid hydrocarbons by the application of 20-70 bar of CO(2) gas. Subsequently releasing the gas causes the compounds to precipitate or crystallize, giving quantitative recovery of the solid. The resulting crystals can be of sufficient quality for single-crystal X-ray crystallography; the structures of Rh(2)(O(2)CCF(2)CF(2)CF(3))(4)(DMF)(2), Rh(2)(O(2)C(CF(2))(9)F)(4)(MeOH)(2), Cr(hfacac)(3), and P[C(6)H(3)(3,5-CF(3))(2)](3) have been determined from crystals grown in this manner.
authors.affiliation: Department of Chemistry, University of California, Davis, California 95616-5295, USA. jessop@chem.ucdavis.edu
authors.forename: Philip G
authors.initials: PG
authors.lastname: Jessop
authors.forename: Marilyn M
authors.initials: MM
authors.lastname: Olmstead
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Ablan
authors.forename: Megan
authors.initials: M
authors.lastname: Grabenauer
authors.forename: Daniel
authors.initials: D
authors.lastname: Sheppard
authors.forename: Charles A
authors.initials: CA
authors.lastname: Eckert
authors.forename: Charles L
authors.initials: CL
authors.lastname: Liotta