Key points are not available for this paper at this time.
The unusual solid-state nonplanarity seen in the X-ray structures of the Nphenylenes (an example is shown here) is shown to be most likely the result of crystal-packing-induced deformations. These conclusions are based on a study of published and eight new structure determinations, comparison with data on napththalenes and anthracenes obtained from the Cambridge Structural Database, and ab initio calculations.
Holmes et al. (Fri,) studied this question.