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Figure 4
Structural drawings of (NH4)(H2AsO4)(H3AsO4), viewed along (a) [110] and (b) b. The unit cell is outlined. AsO4 tetra­hedra (yellow) are connected via multiple hydrogen bonds (blue dashed lines) into a 3D network. AsO4 tetra­hedra and NH4+ cations are arranged in layers perpendicular to c. Additional hydrogen bonds of medium strength are provided by the NH4+ cations.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 75| Part 8| August 2019| Pages 1134-1141
https://doi.org/10.1107/S2053229619008489
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