2-Hydroxyisophthalic acid: hydrogen-bonding patterns in the monohydrate and the tetraphenylphosphonium salt. An instance of dramatic acidity enhancement by symmetric, internally hydrogen-bonded anion stabilization

Bawa, S.; Coté, M.L.; Dubois, P.; Lalancette, R.A.; Thompson, H.W.

doi:10.1107/S0108768104012686

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 2
A packing diagram for (1), illustrating the 11.8 (3)° dihedral angle of the molecular plane relative to the bc plane. The two asymmetric units shown have an interplanar separation of 2.592 (6) Å. Open bonds on the water at upper left are used to illustrate the hydrogen positions refined from experimental electron densities. The water at lower right, with solid bonds, shows the idealized H positions used in the other figures. Displacement ellipsoids are set at the 30% probability level.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 60| Part 4| July 2004| Pages 438-446

doi:10.1107/S0108768104012686

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