Collect. Czech. Chem. Commun.
1992, 57, 2309-2314
https://doi.org/10.1135/cccc19922309
Structure of Sodium Hydrogen Selenite-Selenious Acid Adduct (1:3), NaHSeO3.3H2SeO3
Josef Louba, Zdeněk Mičkaa, Jana Podlahováa, Karel Malýb and Jürgen Kopfc
a Department of Inorganic Chemistry, Charles University, 128 40 Prague 2, Czechoslovakia
b Institute of Physics, Czechoslovak Academy of Sciences, 180 40 Prague 8, Czechoslovakia
c Department of Inorganic and Applied Chemistry, University of Hamburk, W-2000 Hamburk 13, Germany
Abstract
Structure of sodium hydrogen selenite-selenious acid (1:3) was solved by heavy-atom method and refined anisotropically to R = 0.098 for 1223 unique observed reflections. The title compound crystallizes in the Pc space group with a = 5.756(2), b = 4.911(2), c = 20.010(5) Å, β = 100.48(3)°, V = 556(1) Å3, T = 293 K, (a = 5.763(2), b = 4.878(1), c = 20.03(1) Å, β = 100.48(3)°, V = 554(1) Å3, T = 173 K), Z = 2. The structure consist of HSeO3- anions, molecules of selenious acid and Na+ cations which are octahedrally coordinated with oxygen atoms. The structure is stabilized by a system of hydrogen bonds.
