Dirubidium sodium manganate(V), Rb₂NaMnO₄

Rb₂NaMnO₄ has been obtained from a redox reaction in silver crucibles. The crystal structure contains isolated [MnO₄] units, which are slightly distorted from ideal tetra­hedral symmetry. Rb₂NaMnO₄ crystallizes isotypic with Cs₂NaVO₄ and Cs₂NaAsO₄.