title: The incommensurately modulated structure of a tricyclic natural-product-like compound of empirical formula C22H20O3.
abstract: 3,4-Diphenyl-2a,5a,6,7,8,8a,8b-heptahydro-furo[4,3,2-de]chromen-2-one (1) was prepared as part of a project aimed at the synthesis of polycyclic natural-product-like scaffolds. X-ray analysis of crystals grown from ethanol revealed an incommensurately modulated structure. Data include main and satellite reflections up to second order. The modulation vector was refined using the NADA program. The modulated character of the structure of the organic compound C(22)H(20)O(3) is interpreted in terms of the intermolecular C-H...O hydrogen bonds and close-contact approximation.
authors.affiliation: Laboratoire de Cristallographie, Ecole Polytechnique Fédérale de Lausanne, Institut de Physique de la Matière Complexe, CH-1015 Lausanne, Switzerland. nicolas.guiblin@epfl.ch
authors.forename: Nicolas
authors.initials: N
authors.lastname: Guiblin
authors.forename: Cyril A
authors.initials: CA
authors.lastname: Fuhrer
authors.forename: Robert
authors.initials: R
authors.lastname: Häner
authors.forename: Helen
authors.initials: H
authors.lastname: Stoeckli-Evans
authors.forename: Kurt
authors.initials: K
authors.lastname: Schenk
authors.forename: Gervais
authors.initials: G
authors.lastname: Chapuis
mesh_terms: D001578:Benzopyrans / Q000737:chemistry*; D001688:Biological Products / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure
chemical_list: D001578:Benzopyrans; D001688:Biological Products