Acta Cryst. (2008). E64, o2125  [ doi:10.1107/S160053680803290X ]

2-[(E)-(5-tert-Butyl-2-hydroxyphenyl)diazenyl]benzoic acid

T. S. Basu Baul, A. Paul, H. D. Arman and E. R. T. Tiekink

Abstract: The title compound, C₁₇H₁₈N₂O₃, is approximately planar, owing in part to an intramolecular bifurcated O-H(N,O) hydrogen bond; the dihedral angle between the two aromatic rings is 23.86 (9)°. In the crystal struture, centrosymmetrically related molecules associate into dimers via the eight-membered carboxylate {H-O-C=O}₂ synthon.

Online 18 October 2008

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