ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, vol.66, 2010 (SCI-Expanded)
In the title salt, C(9)H(18)NO(2)(+)center dot H(2)PO(4)(-), the cyclohexane ring is puckered, the total puckering amplitude Q(T) being 0.555 (4) angstrom, and an intramolecular N-H center dot center dot center dot O hydrogen bond generates an S(7) ring. In the crystal structure, intermolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds lead to R(2)(2)(14), R(3)(3)(8) and R(4)(2)(8) rings, generating a two-dimensional layer.