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International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 11(69), p. o1667-o1668, 2013

DOI: 10.1107/s160053681302727x

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Bis(L-serinium) oxalate dihydrate: polymorph II

Journal article published in 2013 by Marta Kulik, Aleksandra Pazio, Krzysztof Wozniak ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A corrected and improved structure of the polymorph II of 2C3H8NO3+·C2O42−·2H2O, based on single-crystal data, is presented. The structure is refined with anisotropic displacement parameters for all non-H atoms and all H atoms are located. Due to the charged moieties, the structure is classified as a molecular salt. Intermolecular O—H...O−, O—H...O and N+—H...O−hydrogen bonds link the components of the structure. The L-serinium cations and oxalate anions form a network of channels in [100] direction, filled with the water molecules of crystallization. The dihedral angle between the CO2units of the oxalate dianion is 10.2 (3)°