Author(s) Grassl, T.; Korber, N.
Journal Acta Crystallogr E Crystallogr Commun
Date Published 2017 Feb 01

The title compound, Rb2O2·2NH3, has been obtained as a reaction product of rubidium metal dissolved in liquid ammonia and glucuronic acid. As a result of the low-temperature crystallization, a disolvate was formed. To our knowledge, only one other solvate of an alkali metal peroxide is known: Na2O2·8H2O has been reported by Grehl et al. [Acta Cryst. (1995), C51, 1038-1040]. We determined the peroxide bond length to be 1.530 (11) Å, which is in accordance with the length reported by Bremm & Jansen [Z. Anorg. Allg. Chem. (1992), 610, 64-66]. One of the ammonia solvate molecules is disordered relative to a mirror plane, with 0.5 occupancy for the corresponding nitrogen atom.

DOI 10.1107/S2056989017000354
Citation Grassl T, Korber N. Crystal structure of rubidium peroxide ammonia disolvate. Acta Crystallogr E Crystallogr Commun. 2017;73(Pt 2):200-202.

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