Acta Crystallographica Section C

Crystal Structure Communications

Volume 64, Part 1 (January 2008)

metal-organic compounds

sq3109 scheme

Acta Cryst. (2008). C64, m17-m19 [ doi:10.1107/S0108270107054212 ]

Oxygen versus nitrogen interactions in lithium dinitramidate dihydrate and pyridinium dinitramidate

T. M. Klapötke, B. Krumm and M. Scherr

Abstract: The title compounds, diaquadinitramidatolithium(I), [Li(N₃O₄)(H₂O)₂], (I), and pyridinium dinitramidate, C₅H₆N⁺·N₃O₄^-, (II), differ significantly in their cation-anion contacts. The Li⁺ atom of (I) is coordinated by two O atoms of the dinitramide anion in a chelate and by four additional water molecules, with the Li and central N atom of the anion on a twofold rotation axis. The pyridinium cation of (II) exhibits a contact with the dinitramide anion via an intermolecular N-HN hydrogen bridge. These interactions are compared with those found in reported anhydrous lithium dinitramide and ammonium dinitramide salts.

Formula: [Li(N₃O₄)(H₂O)₂] and C₅H₆N⁺·N₃O₄^-


	Structure factor file (CIF format) (28.3 kbytes) [ doi:10.1107/S0108270107054212/sq3109Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (74.3 kbytes) [ doi:10.1107/S0108270107054212/sq3109IIsup3.hkl ] Contains datablock II

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