Abstract
The title compound, tetramethylammonium 4,4′,6,6′-tetrahydroxy-2,2′-spirobi(cyclotriboroxane) 0.25-hydrate, C4H12N+·B5H4O10−·0.25H2O, was synthesized under mild solvothermal conditions. The B5O6(OH)4− clusters are connected by strong hydrogen-bonding interactions into a three-dimensional structure containing rectangular channels along the a axis, in which the C4H12N+ ions and water molecules are located.
