Alkalimetallformiate, V Die Kristallstruktur von Natriumformiat-Dihydrat, NaHCO₂·2H₂O [1] Alkali Metal Formates, V The Crystal Structure of Sodium Formate Dihydrate, NaHCO₂·2H₂O [1]

Open Access

1 September 1994

journal article
Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B

Vol. 49 (9) , 1179-1182
https://doi.org/10.1515/znb-1994-0905

Abstract

Single crystals of sodium formate dihydrate, NaHCO₂·2H₂O, have been prepared from aqueous solutions of sodium formate, NaHCO₂, via the trihydrate, NaHCO₂-3H₂O. They are orthorhombic, space group Cmca, with a = 7.070(4), b = 14.534(2), c = 8.706(2) Å and Z = 8. The structure, including the hydrogen atoms, was refined to R = 0.054, R_w = 0.065 for 479 unique reflections with I > 3 σ (I). It comprises buckled layers formed by NaO₆ octahedra which are edge- and corner-sharing. The octahedral coordination of the sodium ions is achieved by two oxygen atoms from two different end-on bonded formate ions and four water oxygen atoms. The O···H distances show clearly that strong hydrogen bonds are not involved in the bonding system

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Alkalimetallformiate, V Die Kristallstruktur von Natriumformiat-Dihydrat, NaHCO2·2H2O [1] Alkali Metal Formates, V The Crystal Structure of Sodium Formate Dihydrate, NaHCO2·2H2O [1]

Abstract

Keywords

Alkalimetallformiate, V Die Kristallstruktur von Natriumformiat-Dihydrat, NaHCO₂·2H₂O [1] Alkali Metal Formates, V The Crystal Structure of Sodium Formate Dihydrate, NaHCO₂·2H₂O [1]