Abstract
In the title compound, C23H24F2O3, the central pyran ring has a flat-boat conformation, whereas the two fused cyclohexenone rings adopt envelope conformations, with the C atom bearing the dimethyl substituent being the flap atom in each case. The pyran ring mean plane and the difluorophenyl ring are almost normal to each other, making a dihedral angle of 87.55 (4)°. In the crystal, molecules are linked by pairs of C—H⋯O hydrogen bonds, forming inversion dimers with an R 2 2(8) ring motif. The F atom at position 2 on the difluorophenyl ring is disordered over the 2- and 6-positions, and has a refined occupancy ratio of 0.932 (3):0.068 (3).
Highlights
In the title compound, C23H24F2O3, the central pyran ring has a flat-boat conformation, whereas the two fused cyclohexenone rings adopt envelope conformations, with the C atom bearing the dimethyl substituent being the flap atom in each case
Molecules are linked by pairs of
The F atom at position 2 on the difluorophenyl ring is disordered over the 2- and 6-positions, and has a refined occupancy ratio of 0.932 (3):0.068 (3)
Summary
Srinivasane a Department of Physics, Seethalakshmi Ramaswami College (Autonomous), Tiruchirappalli 620 002, India, bDepartment of Physics, K. Ramakrishnan College of Engineering, Samayapuram, Tiruchirappalli 621 112, India, cDepartment of Chemistry, Sri Krishna Engineering College, Panapakkam, Thambaram 601 301, India, dDepartment of Chemistry, Chemistry Wing DDE, Annamalai University, Annamalainagar 608 002, India, and eDepartment of Chemistry, S.K.P. Engineering. Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.002 Å; disorder in main residue; R factor = 0.048; wR factor = 0.147; data-to-parameter ratio = 25.2. The pyran ring mean plane and the difluorophenyl ring are almost normal to each other, making a dihedral angle of 87.55 (4). The F atom at position 2 on the difluorophenyl ring is disordered over the 2- and 6-positions, and has a refined occupancy ratio of 0.932 (3):0.068 (3)
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