Acta Crystallographica Section C: Crystal Structure Communications
The title compound, sodium bis(6-carboxy-1-hydroxy-3-oxo-1,3-dihydro-2,1-benzoxaborol-1-yl)oxidanium, Na+·C16H15B2O13-, was prepared in two steps from 2-bromo-p-xylene. Its crystal structure was determined at 140 K and has triclinic (P) symmetry. The compound presents a unique structural motif, including two units of the cyclic anhydride of boronoterephthalic acid, joined by a protonated, and thereby trivalent, oxonium center. Association in the crystal is realized by complementary hydrogen bonding of the carboxyl groups, as well as by coordination of the sodium cations to the oxygen centers on the five-membered rings.
Copyright © 2011, International Union of Crystallography
International Union of Crystallography
Simmons, Scott; Fratini, Albert; and Benin, Vladimir, "A Sodium Salt of the Dimer of Boronoterephthalic Acid Anhydride" (2011). Chemistry Faculty Publications. 17.
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