Acta Cryst. (2009). E65, m19  [ doi:10.1107/S160053680803849X ]

Bis[glycinium(0.5+)] perrhenate

V. H. Rodrigues, M. M. R. R. Costa, T. Dekola and E. de Matos Gomes

Abstract: All the residues of the title compound, (C₂H_5.5NO₂)₂[ReO₄], are located in general crystallographic positions. The glycine molecules have usual conformations [Rodrigues Matos Beja et al. (2006). Acta Cryst. C62, o71-o72] with the H atom of the carboxylate group half-occupied, thus bearing a formal half-positive charge per molecule. The perrhenate anion has nearly ideal tetrahedral geometry. A large number of strong hydrogen bonds give rise to the overall three-dimensional network. A two-dimensional network, parallel to (100), is made up of strong O-HO hydrogen bonds with a donor acceptor distance of 2.445 (2) Å. A large number of weaker O-HO and N-HO hydrogen bonds consolidates the structure into an overall three-dimensional network.

Online 6 December 2008

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