Research Article: (E,E,E,E)-2,3,5,6-Tetra­kis{2-[4-(dimethyl­amino)­phen­yl]ethen­yl}pyrazine

Date Published: June 01, 2011

Publisher: International Union of Crystallography

Author(s): Volker Schmitt, Dieter Schollmeyer, Heiner Detert.


In the title compound, C44H48N6, the essentially planar mol­ecule [maximum deviation from the mean plane of the π system of 0.271 (3) Å] is located on a crystallographic centre of inversion. The almost planar (angle sums at N atoms = 357.6 and 357.1°) dimethyl­amino groups and short C—N bonds of the aniline groups [both 1.379 (4) Å] indicate strong electronic coupling between these groups and the central pyrazine ring.

Partial Text

For similar tetra­styryl­pyrazines prepared by acid- or base-catalysed condensations, see: Takahashi & Satake (1952 ▶). For photochemical properties of tetra­styryl­pyrazines, see: Collette & Harper (2003 ▶); Rumi et al. (2008 ▶) For star-shaped chromo­phores, see: Detert et al. (2010 ▶); Detert & Sugiono (2005 ▶); Strehmel et al. (2003 ▶); Nemkovich et al. (2010 ▶). For a two-dimensional homologue of the linear distyryl­pyrazine, see: Fischer et al. (2011 ▶). For cruciforms with a central benzene ring and phenyl­ene­vinyl­ene arms, see: Niazimbetova et al. (2002 ▶), Hauck et al. (2007 ▶), Zucchero et al. (2010 ▶). For probes for thrombine detection, see: Yan et al. (2011 ▶).




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