The title compound, 6C13H24N+· H2Si8O206-·44H2O, belongs to the class of cyclo-silicate hydrates, which structurally can be positioned between the zeosils and the clathrate hydrates. [Si8O 18(OH)2] cubes carrying six negative charges are located on crystallographic inversion centres and are surrounded by six adamantyl-trimethyl-ammonium cations. © 2010 International Union of Crystallography

Kirschhock, C.E.A.

Martens, J.A.

Robeyns, Koen