Research Article: 4,4,5,5-Tetra­methyl-2-[1,3,6,8-tetra­bromo-7-(4,4,5,5-tetra­methyl-1,3,2-dioxaborolan-2-yl)pyren-2-yl]-1,3,2-dioxaborolane

Date Published: March 01, 2012

Publisher: International Union of Crystallography

Author(s): Ying Chen, Wen-tao Yu, Zhi-qiang Liu, Ping Yu.

http://doi.org/10.1107/S1600536812006095

Abstract

The complete mol­ecule of the title compound, C28H28B2Br4O4, is generated by the application of a centre of inversion. In the mol­ecule, the BO2 plane is perpendicular to that through the pyrene ring [dihedral angle = 86.27 (13)°]. In the crystal, mol­ecules stack into columns along the b axis, the closest contact between these being of the type C—Br⋯π.

Partial Text

For background to the reactions of pyrene, see: Miura & Yamano (1995 ▶). For the structure of the non-brominated derivative, see: Coventry et al. (2005 ▶).

 

Source:

http://doi.org/10.1107/S1600536812006095