Research Article: 2,4,6,8-Tetra­kis(4-ethyl­phen­yl)-3,7-diaza­bicyclo­[3.3.1]nonan-9-one

Date Published: June 01, 2010

Publisher: International Union of Crystallography

Author(s): K. Rajesh, V. Vijayakumar, A. P. Safwan, Kong Wai Tan, Edward R. T. Tiekink.


The bicyclo­[3.3.1]nonane ring in the title compound, C39H44N2O, adopts a chair–boat conformation with the four benzene rings being directed away from the carbonyl group. The presence of C—H⋯O contacts leads to helical supra­molecular chains along the b axis.

Partial Text

For background to the synthesis and stereochemistry of 3,7-diaza­bicyclo­[3.3.1]nonan-9-ones and their derivatives, see: Srikrishna & Vijaykumar (1998 ▶); Pathak et al. (2007 ▶); Vijayakumar & Sundaravadivelu (2005 ▶). For related structures, see: Natarajan et al. (2008 ▶); Fun et al. (2009 ▶). For conformational analysis, see: Cremer & Pople (1975 ▶).




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