SINGLE CRYSTAL X‐RAY DIFFRACTION ANALYSIS OF 2,3A,4,5‐TETRAHYDRO‐7,8‐DIMETHOXY‐3A‐METHYL‐3H‐BENZ(G)INDAZOL‐3‐ONE HEMIHYDRATE

The structure of 2,3a,4,5-tetrahydro-7,8-dimethoxy-3a-methyl-3H-benz[g]indazol-3-one hemihydrate was unequivocally established by means of an X-ray diffraction analysis of a single crystal. The molecule crystallizes in the space group C2/c with unit cell parameters of a = 18.839(4), b = 7.7694(7), c = 18.211(2) A and β = 101.06(1). The structure was solved by direct methods and refined by least-squares methods to an R-value of 0.069 for 2689 reflections. The indazol-3-one unit of the molecule is non-planar.

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