Van Brussel Erin M, Gossman William L, Wilson Scott R, Oldfield Eric
Department of Chemistry, University of Illinois, 600 South Mathews Avenue, Urbana, Illinois 61801, USA.
Acta Crystallogr C. 2003 Feb;59(Pt 2):o93-4. doi: 10.1107/s0108270102020450. Epub 2003 Jan 31.
The structure of the title compound, H(3)O(+).C(8)H(18)NO(6)P(2)(-), adopts a zwitterionic form containing an alkylammonium group, a hydronium ion, and two negatively charged phosphonate groups. The cycloheptyl side chain adopts a twist-chair conformation. The crystal packing is dominated by an extensive hydrogen-bonding network.
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