Received 6 January 2010
In contrast to the previous structure determinations of the title structure, (NH4)2[MoS4], the present determination at 173 K localized the positions of the H atoms. The title structure belongs to the -K2SO4 family and all the ions are located on crystallographic mirror planes. The ions are held together by N-HS hydrogen bonds (some of which are bifurcated), forming a three-dimensional network. One of the N atoms has nine contacts to the S atoms shorter than 4 Å, and the other has ten.
For preparation of the title compound, see: Herzog et al. (1981). For structures of the -K2SO4 family, see: Fábry & Pérez-Mato (1994). For other structure determinations of the title compound, see: Lapasset et al. (1976); Schäfer et al. (1964). For a description of the Cambridge Structural Database, see: Allen (2002).
Data collection: X-AREA (Stoe & Cie, 2001); cell refinement: X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL-Plus (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FB2179 ).
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