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Abstract
In the title compound, C19H14Cl2O4, intramolecular C—H⋯O and C—H⋯Cl hydrogen bonds generate S(6) and S(5) ring motifs, respectively. In the crystal structure, intermolecular C—H⋯O interactions between symmetry-related molecules involving two methylene groups and an O atom as a bifurcated acceptor generate an R 2 1(6) ring motif. In the molecule, one of the furan rings is rotationally disordered by approximately 180° about the single C—C bond to which it is attached; the refined site-occupancy factors are 0.505 (7) and 0.495 (7). The major component of the disordered furan ring and the benzene ring form a dihedral angle of 88.8 (4)°. The dihedral angle between the major disorder component and the other furan ring is 81.9 (4)°. In addition, the crystal structure is stabilized by further intermolecular C—H⋯O (×2) hydrogen bonds and C—H⋯π interactions.
Highlights
The crystal structure is stabilized by further intermolecular C—H O (2) hydrogen bonds and C—H interactions
The low-temperature data was collected with the Oxford Cyrosystem Cobra low-temperature attachment
The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry
Summary
Key indicators: single-crystal X-ray study; T = 100 K; mean (C–C) = 0.002 Å; disorder in main residue; R factor = 0.041; wR factor = 0.113; data-to-parameter ratio = 25.2. Intermolecular C—H O interactions between symmetry-related molecules involving two methylene groups and an O atom as a bifurcated acceptor generate an R12(6) ring motif. One of the furan rings is rotationally disordered by approximately 180 about the single C—C bond to which it is attached; the refined site-occupancy factors are 0.505 (7) and. The major component of the disordered furan ring and the benzene ring form a dihedral angle of 88.8 (4). The dihedral angle between the major disorder component and the other furan ring is 81.9 (4). The crystal structure is stabilized by further intermolecular C—H O (2) hydrogen bonds and C—H interactions
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