Research Article: Polymorph of 4-(carbazol-9-yl)benzo­nitrile

Date Published: April 01, 2012

Publisher: International Union of Crystallography

Author(s): Yu-Zhong Xie, Jing-Yi Jin, Xiao-Chun Qu.


The asymmetric unit of the title compound, C19H12N2, contains two independent mol­ecules with a similar structure. In the two mol­ecules, the dihedral angles between the carbazole ring system and the benzene ring are 47.9 (5) and 45.4 (4)°, similar to the value of 47.89 (6)° found in the previously reported structure [Saha & Samanta (1999 ▶). Acta Cryst. C55, 1299–1300]. In the crystal, there is a weak C—H⋯N hydrogen bond between the two independent mol­ecules.

Partial Text

For related literature on intra­molecular charge transfer in electron donor–acceptor mol­ecules, see: Samanta et al. (2001 ▶); Galievsky et al. (2010 ▶); Megerle et al.(2008 ▶). For the previously reported structure of the title compound, see: Saha & Samanta (1999 ▶).