Partial fluorination overcomes herringbone crystal packing in small polycyclic aromatics.
[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.
Cho
Don M
DM
Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA.
Parkin
Sean R
SR
Watson
Mark D
MD