Eu2FeH6 crystallizes in the cubic Fm-3m space group. Eu(1) is bonded to twelve equivalent H(1) atoms to form EuH12 cuboctahedra that share corners with twelve equivalent Eu(1)H12 cuboctahedra, faces with six equivalent Eu(1)H12 cuboctahedra, and faces with four equivalent Fe(1)H6 octahedra. Fe(1) is bonded to six equivalent H(1) atoms to form FeH6 octahedra that share faces with eight equivalent Eu(1)H12 cuboctahedra. H(1) is bonded in a distorted single-bond geometry to four equivalent Eu(1) and one Fe(1) atom.
Eu2FeH6 crystallizes in the cubic Fm-3m space group. Eu(1) is bonded to twelve equivalent H(1) atoms to form EuH12 cuboctahedra that share corners with twelve equivalent Eu(1)H12 cuboctahedra, faces with six equivalent Eu(1)H12 cuboctahedra, and faces with four equivalent Fe(1)H6 octahedra. All Eu(1)-H(1) bond lengths are 2.58 Å. Fe(1) is bonded to six equivalent H(1) atoms to form FeH6 octahedra that share faces with eight equivalent Eu(1)H12 cuboctahedra. All Fe(1)-H(1) bond lengths are 1.62 Å. H(1) is bonded in a distorted single-bond geometry to four equivalent Eu(1) and one Fe(1) atom.