Ca2OsH6 crystallizes in the cubic Fm-3m space group. Ca(1) is bonded to twelve equivalent H(1) atoms to form CaH12 cuboctahedra that share corners with twelve equivalent Ca(1)H12 cuboctahedra, faces with six equivalent Ca(1)H12 cuboctahedra, and faces with four equivalent Os(1)H6 octahedra. Os(1) is bonded to six equivalent H(1) atoms to form OsH6 octahedra that share faces with eight equivalent Ca(1)H12 cuboctahedra. H(1) is bonded to four equivalent Ca(1) and one Os(1) atom to form a mixture of corner, edge, and face-sharing HCa4Os square pyramids.
Ca2OsH6 crystallizes in the cubic Fm-3m space group. Ca(1) is bonded to twelve equivalent H(1) atoms to form CaH12 cuboctahedra that share corners with twelve equivalent Ca(1)H12 cuboctahedra, faces with six equivalent Ca(1)H12 cuboctahedra, and faces with four equivalent Os(1)H6 octahedra. All Ca(1)-H(1) bond lengths are 2.56 Å. Os(1) is bonded to six equivalent H(1) atoms to form OsH6 octahedra that share faces with eight equivalent Ca(1)H12 cuboctahedra. All Os(1)-H(1) bond lengths are 1.71 Å. H(1) is bonded to four equivalent Ca(1) and one Os(1) atom to form a mixture of corner, edge, and face-sharing HCa4Os square pyramids.