Date Published: August 01, 2012
Publisher: International Union of Crystallography
Author(s): Mohamed Lahbib Mrad, Matthias Zeller, Kristen J. Hernandez, Mohamed Rzaigui, Cherif Ben Nasr.
The asymmetric unit of the title compound, 2C10H18N+·HPO42−·1.5C4H4O4, contains two adamantan-1-aminium cations, one hydrogen phosphate anion, and one and a half molecules of fumaric acid, one of which exhibits crystallographic inversion symmetry. Each HPO42− anion is hydrogen bonded, via all of its O atoms, to four NH3+ groups of the adamantan-1-aminium cations, forming chains along . These chains are, in turn, interconnected via a set of O—H⋯O hydrogen bonds involving the fumaric acid solvent molecules, forming layers parallel to (001). Weak C—H⋯O interactions lead to a consolidation of the three-dimensional set-up.
For common applications of organic phosphate complexes, see: Coombs et al. (1997 ▶); Gani & Wilkie (1995 ▶); Masse et al. (1993 ▶); Oliver et al. (1995 ▶); Wang et al. (1996 ▶). For details of graph-set motifs and theory, see: Bernstein et al. (1995 ▶). For reference structural data, see: Kaabi et al. (2004 ▶); Chtioui & Jouini (2006 ▶).