[Back]


Publications in Scientific Journals:

J. Ring, L. Lindenthal, M. Weil, B. Stöger:
"Crystal structure of sodium dihydrogen arsenate";
Acta Crystallographica Section E: Crystallographic Communications, 73 (2017), 10; 1520 pages.



English abstract:
Single crystals of the title compound, Na(H2AsO4), were obtained by partial neutralization of arsenic acid with sodium hydroxide in aqueous solution. The crystal structure of Na(H2AsO4) is isotypic with the phosphate analogue and the asymmetric unit consists of two sodium cations and two tetra­hedral H2AsO4− anions. Each of the sodium cations is surrounded by six O atoms of five H2AsO4− groups, defining distorted octa­hedral coordination spheres. In the extended structure, the sodium cations and di­hydrogen arsenate anions are arranged in the form of layers lying parallel to (010). Strong hydrogen bonds [range of O...O distances 2.500 (3)-2.643 (3) Å] between adjacent H2AsO4− anions are observed within and perpendicular to the layers. The isotypic structure of Na(H2PO4) is comparatively discussed.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1107/S2056989017013470


Created from the Publication Database of the Vienna University of Technology.