3-Amino-1-(4-fluorophenyl)-7-methoxy-1H-benzo[f]chromene-2-carbonitrile
نویسندگان
چکیده
In the title compound, C21H15FN2O2, the furan ring has a flattened half-chair conformation [the methine C atom lies 0.136 (2) Å above the C5 plane which has an r.m.s. deviation of 0.0229 Å]. Overall, the 1H-benzo[f]chromene fused-ring system approximates a plane (r.m.s. deviation of the 14 non-H atoms = 0.049 Å). The fluoro-benzene ring is almost perpendicular to this plane [dihedral angle = 89.58 (8)°]. Zigzag supra-molecular tapes along the b axis are the most notable feature of the crystal packing. This arises through an alternating sequence of 12-membered {⋯HNC3N}2 and eight-membered {⋯HNCO}2 synthons. These are connected into a three-dimensional architecture by π-π [inter-centroid distance for centrosymmetrically related fluoro-benzene rings = 3.5181 (10) Å] and C-H⋯π inter-actions.
منابع مشابه
3-Amino-1-(4-fluorophenyl)-8-methoxy-1H-benzo[f]chromene-2-carbonitrile
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