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. 2014 Jan 11;70(Pt 2):o129.
doi: 10.1107/S1600536814000464. eCollection 2014 Feb 1.

Di-ethyl-ammonium di-hydrogen orthophosphate

Peter Held  1
Affiliations

Di-ethyl-ammonium di-hydrogen orthophosphate

Peter Held. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title molecular salt, [NH2(CH2CH3)2][H2PO4], two unique types of cations and anions, which are configurationally very similar, are present in the asymmetric unit. Both ions form sheets approximately parallel to (-1-1) linked by weak hydrogen bonds. The inter-connection within and between the sheets is reinforced by O-H⋯O and N-H⋯O hydrogen bonds involving the tetra-hedral H2PO4 anions and the ammonium groups.

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Figures

Fig. 1.
Fig. 1.
The molecular entities in the structure of [NH2(CH2CH3)2]+[H2PO4]-, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. H labels were omitted for clarity.
Fig. 2.
Fig. 2.
The unit cell of [NH2(CH2CH3)2]+[H2PO4]- with colour scheme: N (orange), O (blue), [H2PO4]-tetrahedra (blue), P (red), C grey) and H (white). Hydrogen bonds (light blue) between H2PO4 tetrahedra and hydrogen bonds (orange) between ammonium groups and H2PO4 tetrahedra are shown.
Fig. 3.
Fig. 3.
Clinographic projection of eight unit cells of [NH2(CH2CH3)2]+[H2PO4]-. The ionic units form sheets approximately parallel to (112). Hydrogen bonds (grey) interconnect the sheets.
See this image and copyright information in PMC

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