title: 2,4,6,8-Tetra-kis(4-ethyl-phen-yl)-3,7-diaza-bicyclo-[3.3.1]nonan-9-one.
abstract: The bicyclo-[3.3.1]nonane ring in the title compound, C(39)H(44)N(2)O, 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 supra-molecular chains along the b axis.
authors.forename: K
authors.initials: K
authors.lastname: Rajesh
authors.forename: V
authors.initials: V
authors.lastname: Vijayakumar
authors.forename: A P
authors.initials: AP
authors.lastname: Safwan
authors.forename: Kong Wai
authors.initials: KW
authors.lastname: Tan
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink