Research Article: 4,5-Diphen­oxy­benzene-1,2-dicarbo­nitrile

Date Published: March 01, 2012

Publisher: International Union of Crystallography

Author(s): Chuan Ching Foo, Ai Ling Tan, Franz L. Wimmer, Aminul Huq Mirza, David J. Young, Seik Weng Ng, Edward R. T. Tiekink.


In the title compound, C20H12N2O2, the phenyl and benzene rings are mutually perpendicular, with the dihedral angle between the phenyl rings being 87.92 (16)° and those formed between the phenyl rings and the benzene rings being 73.68 (15) and 84.65 (15)°. Helical supra­molecular chains along [010], mediated by C—H⋯N inter­actions, are found in the crystal structure.

Partial Text

For the use of functionalized phthalocyanines as dyes in photodynamic therapy and in dye-sensitized solar cells, see: Li et al. (2008 ▶); Jiang et al. (2011 ▶); Zhao et al. (2009 ▶). For a related structure, see: Yu et al. (2010 ▶). The present synthesis is based on earlier syntheses; see: Wohrle et al. (1993 ▶); Li et al. (2008 ▶).