Benzyltrimethylammonium hydroxide trihydrate containing hydroxide-water layers

In the title compound, C10H16N+. OH-. 3H(2)O, two-dimensional bilayer-like arrays of organic cations and corrugated anionic hydroxide-water layers are stacked alternately along the c axis. All hydroxide and water H atoms are in ordered positions, giving rise to a network of hydrogen bonds [O . . .O 2.639 (2)-2.927 (2) Angstrom for water donors and O . . .O 3.323 (2) Angstrom for hydroxide donors] with four- and six-membered rings.