Ammonium 1-ammonio-ethane-1,1-diylbis(hydrogenphospho-nate) dihydrate

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 64; no. Pt 12; p. o2340
• Main Authors: Bon, V V, Dudko, A V, Kozachkova, A N, Pekhnyo, V I
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 13.11.2008
• Subjects: Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536808037045

The title compound, NH(4) (+)·C(2)H(8)NO(6)P(2) (-)·2H(2)O, was obtained by the reaction between 1-amino-ethane-1,1-diyldiphospho-nic acid and ammonium hydroxide (1:1) in an aqueous solution. The asymmetric unit contains one anion with two H atoms transferred from the phospho-nic acid groups to the amino group of the anion and to an ammonia mol-ecule, giving an ammonium cation. The structure displays N-H⋯O and O-H⋯O hydrogen bonding, which creates a three-dimensional network.