Anitha B R, Gunaseelan A Thomas, Vinduvahini M, Kavitha H D, Devarajegowda H C
Department of Physics, Yuvaraja's College (Constituent College), University of Mysore, Mysore 570 005, Karnataka, India.
Department of Physics, St Philomena's College (Autonomous), Mysore 570 015, Karnataka, India.
Acta Crystallogr E Crystallogr Commun. 2015 Nov 14;71(Pt 12):o928-9. doi: 10.1107/S2056989015021179. eCollection 2015 Dec 1.
In the title compound, C15H14FNO3S2, the 2H-chromene ring system is close to being planar (r.m.s. deviation = 0.024 Å) and the morpholine ring adopts a chair conformation. The dihedral angle between the 2H-chromene ring system and the morpholine ring (all atoms) is 88.21 (11)°. In the crystal, inversion dimers linked by pairs of very weak C-H⋯F hydrogen bonds generate R 2 (2)(8) loops; C-H⋯O hydrogen bonds connect the dimers into [010] chains. Weak aromatic π-π stacking inter-actions between the pyran rings of the chromene systems [centroid-centroid distance = 3.6940 (16) Å] are also observed.
在标题化合物C₁₅H₁₄FNO₃S₂中，2H - 色烯环系统接近平面（均方根偏差 = 0.024 Å），吗啉环呈椅式构象。2H - 色烯环系统与吗啉环（所有原子）之间的二面角为88.21（11）°。在晶体中，由非常弱的C - H⋯F氢键对连接的反演二聚体形成R 2 (2)(8)环；C - H⋯O氢键将二聚体连接成[010]链。还观察到色烯系统的吡喃环之间存在弱的芳香π - π堆积相互作用[质心 - 质心距离 = 3.6940（16）Å]。
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