Crystal and molecular structure of 6,7-diphenyldibenzo[e,g][1,4]diazocine, a heterocyclic cyclo-octatetraene

Abstract

The crystal and molecular structure of the title compound has been determined by direct methods from 1581 nonzero reflections measured diffractometrically. Crystals are orthorhombic, space group Pbcn, with a= 14·798(2), b= 10·355(1), and c= 11·992(2)Å, Z= 4 and the molecule occupies the two-fold axis of the space group. Least-squares refinement gave a final R of 0·037. Bond lengths for C–N of 1·424(2) and 1·274(2)Å were determined for bonds of nearly single- and double-bond character.