Abstract
In the title molecule, C20H18O4, the three methyl groups of the tert-butyl substituent show rotational disorder. Each methyl group is split over three positions, with refined site-occupation factors of 0.711 (4), 0.146 (3) and 0.144 (4). The benzene ring of the benzoate group is oriented at a dihedral angle of 60.70 (7)° with respect to the planar chromene ring [maximum deviation = 0.046 (2) Å]. The crystal structure features centrosymmetric R 2 2(8) dimers formed via C—H⋯O interactions, and these dimeric aggregates are connected by C—H⋯π interactions.
Highlights
In the title molecule, C20H18O4, the three methyl groups of the tert-butyl substituent show rotational disorder
Each methyl group is split over three positions, with refined site-occupation factors of 0.711 (4), 0.146 (3) and 0.144 (4)
The crystal structure features centrosymmetric R22(8) dimers formed via C—H O interactions, and these dimeric aggregates are connected by C—
Summary
Adama Sabab and Rita Kakou-Yaoa a Laboratoire de Cristallographie et Physique Moléculaire, UFR SSMT, Université de Cocody, 22 BP 582, Abidjan 22, Cote d’Ivoire, and bLaboratoire de Chimie Bioorganique et Phytochimie, Université de Ouagadougou, 03 BP 7021, Ouagadougou.
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