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The title compound is a polymorph (Z = 2, space group P1) of the orthorhombic form reported by Toda, Tanaka, Miyamoto, Koshima, Miyahara & Hirotsu [J. Chem. Soc. Perkin Trans. 2 (1997), pp. 1877-1885]. There is an intramolecular O-H...O hydrogen bond in each molecule, with the second hydroxy group free and not participating in hydrogen bonding.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, I

hkl

Structure factor file (CIF format)
Supplementary material

CCDC reference: 138051

-1
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