Acta Cryst. (2003). E59, m521-m523  [ doi:10.1107/S1600536803013278 ]

Ethylenediammonium disodium (1-hydroxyethylidene)diphosphonate tetrahydrate, [NH₃(CH₂)₂NH₃]Na₂(hedp)·4H₂O

Z.-B. Wu, Z.-M. Liu, P. Tian, L. Xu, Y.-L. He, S.-Y. Sang, Y. Yang, X.-M. Liu, X.-C. Liu and X.-H. Bao

Abstract: The title structure, C₂H₁₀N₂²⁺·2Na⁺·C₂H₄O₇P₂^4-·4H₂O or (NH₃CH₂CH₂NH₃)Na₂(hedp)·4H₂O (SDP-2) (hedp = 1-hydroxyethylidenediphosphonate), contains one-dimensional anionic sodium-hedp chains which are connected by N-HO and O-HO hydrogen bonds. There are two crystallographically independent P atom environments.

Online 30 June 2003

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