Na2IrH6 crystallizes in the cubic Fm-3m space group. Na(1) is bonded to twelve equivalent H(1) atoms to form NaH12 cuboctahedra that share corners with twelve equivalent Na(1)H12 cuboctahedra, faces with six equivalent Na(1)H12 cuboctahedra, and faces with four equivalent Ir(1)H6 octahedra. Ir(1) is bonded to six equivalent H(1) atoms to form IrH6 octahedra that share faces with eight equivalent Na(1)H12 cuboctahedra. H(1) is bonded to four equivalent Na(1) and one Ir(1) atom to form a mixture of edge, face, and corner-sharing HNa4Ir square pyramids.
Na2IrH6 crystallizes in the cubic Fm-3m space group. Na(1) is bonded to twelve equivalent H(1) atoms to form NaH12 cuboctahedra that share corners with twelve equivalent Na(1)H12 cuboctahedra, faces with six equivalent Na(1)H12 cuboctahedra, and faces with four equivalent Ir(1)H6 octahedra. All Na(1)-H(1) bond lengths are 2.62 Å. Ir(1) is bonded to six equivalent H(1) atoms to form IrH6 octahedra that share faces with eight equivalent Na(1)H12 cuboctahedra. All Ir(1)-H(1) bond lengths are 1.69 Å. H(1) is bonded to four equivalent Na(1) and one Ir(1) atom to form a mixture of edge, face, and corner-sharing HNa4Ir square pyramids.