Na3RhH6, Na3IrH6 and Li3IrH6 - new complex hydrides with isolated [RhH6]3-- and [IrH6 ]3--octahedra

Article abstract of DOI:10.1016/0925-8388(91)90033-R

The ternary alkali metal rhodium and iridium hydrides were synthesized by the reaction of alkali metal hydride with transition metal powder in a pure hydrogen atmosphere. The crystal structures were determined by X-ray investigations on powdered samples and elastic neutron diffraction experiments on the deuterated compounds. The isotypic atomic arrangements (space group Pnma) contain isolated [RhH₆]^3-- and [IrH₆]^3--octahedra which are separated by the alkali metal ions.