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X‐ray Structure Analysis of 4–[(3,3–Dimethyloxiranyl)–methoxy]‐7H‐furo[3,2‐g][1]benzopyran‐7‐one
Author(s) -
Singh Attar,
Gupta Vivek K.,
Goswami K. N.
Publication year - 1995
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170300721
Subject(s) - triclinic crystal system , benzopyran , ring (chemistry) , dihedral angle , crystallography , hydrogen bond , chemistry , molecule , furanocoumarin , stereochemistry , crystal structure , organic chemistry
The title compound, C 16 H 14 O 5 , a furanocoumarin crystallizes in the triclinic space group P 1 . The unit cell parameters are a = 7.852(2), b = 8.485(1), c = 11.095(1) Å; α = 105.90(1), β = 103.18(2), γ = 95.07(1)°. The structure has been solved by direct methods. Final R = 0.048 for 1943 observed reflections. The furanocoumarin system is almost planar. The epoxide ring makes a dihedral angle with the fused ring system of 98.21(11)°. Molecules are held together by C—H… O hydrogen bonds.