title: Crystal structure and absolute configuration of (3aR,3'aR,7aS,7'aS)-2,2,2',2'-tetra-methyl-3a,6,7,7a,3'a,6',7',7'a-octa-hydro-4,4'-bi[1,3-benzodioxol-yl], obtained from a Pd-catalyzed homocoupling reaction.
abstract: The absolute configuration,i.e.(3aR,3'aR,7aS,7'aS), of the title compound, C18H26O4, synthesizedviaa palladium-catalyzed homocoupling reaction, was determined on the basis of the synthetic pathway and was confirmed by X-ray diffraction. The homocoupled mol-ecule is formed by two chemically identical moieties built up from two five- and six-membered fused rings. The supra-molecular assembly is controlled mainly by C-H⋯O inter-actions that lead to the formation of hydrogen-bonded chains of mol-ecules along the [001] direction, while weak dipolar inter-actions and van der Waals forces hold the chains together in the crystal structure.
authors.affiliation: Departamento de Química, Universidad de los Andes, Carrera 1 No 18A-12, Bogotá, Colombia.
authors.forename: Mario A
authors.initials: MA
authors.lastname: Macías
authors.affiliation: Departamento de Química Orgánica, Facultad de Química, Universidad de la República, Montevideo, Uruguay.
authors.forename: Enrique
authors.initials: E
authors.lastname: Pandolfi
authors.affiliation: Departamento de Química Orgánica, Facultad de Química, Universidad de la República, Montevideo, Uruguay.
authors.forename: Valeria
authors.initials: V
authors.lastname: Schapiro
authors.affiliation: Departamento de Química Orgánica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, 91501-970, Brazil.
authors.forename: Gustavo P
authors.initials: GP
authors.lastname: Silveira
authors.affiliation: Departamento de Química Orgánica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, 91501-970, Brazil.
authors.forename: Guilherme D
authors.initials: GD
authors.lastname: Vilela
authors.affiliation: Cryssmat-Lab/Cátedra de Física/DETEMA, Universidad de la República, Montevideo, Uruguay.
authors.forename: Leopoldo
authors.initials: L
authors.lastname: Suescun
keywords: 1,3-benzodioxol­yl; absolute configuration; crystal structure; homocoupling reaction; palladium-catalyzed