C. Sudarsanakumar, M. Rao, S. Srinivasan
1993
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Journal
Zeitschrift für Kristallographie - Crystalline Materials
Abstract
The crystal structure of 2,4-dihydro-8-methoxy-4,4-dimethyl-2P-tolyl-l//-[l] benzopyrano-[4,3,2-cd] indol-l-one (C24H21NO3) was determined from single crystal X-ray diffraction data. The crystal belongs to the triclinic, space group P\, with a = 6.060(2), b = 12.276(5), c = 12.889(5) Â, α = 92.63(4), β = 90.78(4), y = 95.71(3)°, M, = 371.42, V = 952.92 Â, Ζ = 2, Dcal = 1.29 Mg-m 3 , Dm = 1.28 Mg-m 3 , A(CuAT„) = 1.54178 λ, μ = 0.60 mm" , Τ = 293 Κ, F(000) = 392. The crystal structure was solved by direct methods and refined by least-squares to R = 0.038 and Rw = 0.043 for 2257 independent reflections. The pyran ring assumes a distorted boat conformation.