Publications in Scientific Journals:
C. Larvor, B. Stöger:
"The phase transition of rubidium hydrogen carbonate, RbHCO3";
Acta Crystallographica Section E: Crystallographic Communications,
E73
(2017),
975
- 979.
English abstract:
Rubidium hydrogen carbonate, RbHCO3, features an order/disorder phase transition at TC = 245 K from the high-temperature (HT) disordered C2/m modification to the low-temperature (LT) C-1 modification. The crystal structures are characterized by [HCO3]22+ pairs of hydrogen carbonate groups connected by strong hydrogen bonding. The [HCO3]22+ pairs are connected by Rb+ cations into a three-dimensional network. In HT-RbHCO3, the hydrogen atom is disordered. In LT-RbHCO3, ordering of the hydrogen atom leads to a translationengleiche symmetry reduction of index 2. The lost reflections and rotations are retained as twin operations.
Keywords:
crystal structure; order/disorder transition; hydrogen carbonate
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1107/S2056989017008271
Electronic version of the publication:
http://publik.tuwien.ac.at/files/publik_260000.pdf
Created from the Publication Database of the Vienna University of Technology.