Inelastic Neutron Scattering spectrum of Yttrium manganese deuteride x=6.0, YMn2D6.0, measured on the TOSCA instrument. Ionic material Fm-3m space group: (Y,Mn)[MnD6], Y2+ and Mn2+ are disordered on the tetrahedral sites and [MnD6]2- ions occupy the octahedral sites..