view article
Figure 4
A superposition of the mol­ecular conformations of (I)[link]–(III)[link], showing the conformational similarity in their tricyclic ring systems, and also highlighting the fact that the N2 substitution has no significant effect on the conformation of the tricyclic ring systems. The overlay was made by making a least-squares fit through the benzene ring (C1/C2/C5–C8) of mol­ecule A of (I)[link] [labelled (IA)]. The r.m.s. deviations (Å) and labels are as follows: 0.005, mol­ecule B of (I)[link], (IB); 0.008, (II)[link]; and 0.012, (III)[link].

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 68| Part 11| October 2012| Pages o475-o480
doi:10.1107/S0108270112040759
Follow Acta Cryst. C
Sign up for e-alerts
E-alerts
Follow Acta Cryst. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS