Crystal Structure of 2-phenylpyrazolo[4,3-c]coumarin

Abstract

The title compound, 2-phenylpyrazolo[4,3-c]coumarin, C16H10N2O2, crystallizes in the monoclinic space group P21/n with unit-cell parameters: a = 4.8289(1), b = 22.9614(5), c = 11.2023(3)A, β = 92.893(1)°, Z = 4. The crystal structure was solved by direct methods using single-crystal X-ray diffraction data, and refined by full-matrix least-squares procedures to a final R-value of 0.0476 for 2974 observed reflections. The dihedral angle between the phenyl ring D and pyrazolo coumarin moiety is 21.8(1)°. The crystal packing is influenced by weak C-H…O and C-H…π hydrogen bonds, and π-π interactions.