CsTmH3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. Cs(1) is bonded to twelve equivalent H(1) atoms to form CsH12 cuboctahedra that share corners with twelve equivalent Cs(1)H12 cuboctahedra, faces with six equivalent Cs(1)H12 cuboctahedra, and faces with eight equivalent Tm(1)H6 octahedra. Tm(1) is bonded to six equivalent H(1) atoms to form TmH6 octahedra that share corners with six equivalent Tm(1)H6 octahedra and faces with eight equivalent Cs(1)H12 cuboctahedra. The corner-sharing octahedra are not tilted. H(1) is bonded in a distorted linear geometry to four equivalent Cs(1) and two equivalent Tm(1) atoms.
CsTmH3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. Cs(1) is bonded to twelve equivalent H(1) atoms to form CsH12 cuboctahedra that share corners with twelve equivalent Cs(1)H12 cuboctahedra, faces with six equivalent Cs(1)H12 cuboctahedra, and faces with eight equivalent Tm(1)H6 octahedra. All Cs(1)-H(1) bond lengths are 3.15 Å. Tm(1) is bonded to six equivalent H(1) atoms to form TmH6 octahedra that share corners with six equivalent Tm(1)H6 octahedra and faces with eight equivalent Cs(1)H12 cuboctahedra. The corner-sharing octahedra are not tilted. All Tm(1)-H(1) bond lengths are 2.23 Å. H(1) is bonded in a distorted linear geometry to four equivalent Cs(1) and two equivalent Tm(1) atoms.