Journal
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
Volume 62, Issue -, Pages O1170-O1172Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600536806005812
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The title compound [ systematic name: 4,4'-methylenebis(3-hydroxy-2-naphthoic acid)], C23H16O6, has one half-molecule in the asymmetric unit. The molecular twofold rotational axis about the central C atom is preserved on crystallization. A chain formed by R-2(2)(8) hydrogen bonds runs along the c axis and an intramolecular O-H center dot center dot center dot O=C-OH hydrogen bond is also formed. The crystal structure was solved by simulated annealing from laboratory X-ray powder diffraction data, with data collected at room temperature. Rietveld refinement of this model led to a final R-wp value of 0.0391 at 1.39 angstrom resolution.
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