title: Partial fluorination overcomes herringbone crystal packing in small polycyclic aromatics.
abstract: [structure: see text] We report the synthesis and characterization of partially fluorinated condensed tetracyclic aromatic compounds. Typical edge-to-face/herringbone packing of nonfluorinated analogues is replaced here by columnar stacks with disk planes orthogonal to the columnar axes. Enhanced pi-overlap results with overlaid electron-poor and -rich regions.
authors.affiliation: Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA.
authors.forename: Don M
authors.initials: DM
authors.lastname: Cho
authors.forename: Sean R
authors.initials: SR
authors.lastname: Parkin
authors.forename: Mark D
authors.initials: MD
authors.lastname: Watson