title: Tris(methylammonium) hydrogenphosphate dihydrogenphosphate.
abstract: The title compound, 3CH6N+.HPO4(2-).H2PO4-, aggregates with the moieties interconnected by O-H...O and N-H...O hydrogen bonds, with O...O and N...O distances in the ranges 2.5366 (16)-2.5785 (14) and 2.7437 (16)-2.9967 (18) A, respectively. Three C-H...O hydrogen bonds are also present, with C...O distances in the range 3.2310 (18)-3.3345 (17) A. All H atoms are ordered. Structures with ordered hydrogenphosphate and dihydrogenphosphate components are rare.
authors.affiliation: Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Praha 8, Czech Republic.
authors.forename: Jan
authors.initials: J
authors.lastname: Fábry
authors.forename: Radmila
authors.initials: R
authors.lastname: Krupková
authors.forename: Premysl
authors.initials: P
authors.lastname: Vanek
authors.forename: Michal
authors.initials: M
authors.lastname: Dusek