Eu2RuH6 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 Ru(1)H6 octahedra. Ru(1) is bonded to six equivalent H(1) atoms to form RuH6 octahedra that share faces with eight equivalent Eu(1)H12 cuboctahedra. H(1) is bonded to four equivalent Eu(1) and one Ru(1) atom to form a mixture of corner, face, and edge-sharing HEu4Ru square pyramids.
Eu2RuH6 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 Ru(1)H6 octahedra. All Eu(1)-H(1) bond lengths are 2.65 Å. Ru(1) is bonded to six equivalent H(1) atoms to form RuH6 octahedra that share faces with eight equivalent Eu(1)H12 cuboctahedra. All Ru(1)-H(1) bond lengths are 1.72 Å. H(1) is bonded to four equivalent Eu(1) and one Ru(1) atom to form a mixture of corner, face, and edge-sharing HEu4Ru square pyramids.