LiMg2RuH7 crystallizes in the hexagonal P6_3/mmc space group. Li(1) is bonded in a 6-coordinate geometry to six equivalent H(1) atoms. Mg(1) is bonded in a distorted single-bond geometry to one H(2) and nine equivalent H(1) atoms. Ru(1) is bonded in an octahedral geometry to six equivalent H(1) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded to one Li(1), three equivalent Mg(1), and one Ru(1) atom to form a mixture of distorted edge, face, and corner-sharing HLiMg3Ru square pyramids. In the second H site, H(2) is bonded in a linear geometry to two equivalent Mg(1) atoms.
LiMg2RuH7 crystallizes in the hexagonal P6_3/mmc space group. Li(1) is bonded in a 6-coordinate geometry to six equivalent H(1) atoms. All Li(1)-H(1) bond lengths are 2.13 Å. Mg(1) is bonded in a distorted single-bond geometry to one H(2) and nine equivalent H(1) atoms. The Mg(1)-H(2) bond length is 1.87 Å. There are three shorter (2.28 Å) and six longer (2.36 Å) Mg(1)-H(1) bond lengths. Ru(1) is bonded in an octahedral geometry to six equivalent H(1) atoms. All Ru(1)-H(1) bond lengths are 1.69 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded to one Li(1), three equivalent Mg(1), and one Ru(1) atom to form a mixture of distorted edge, face, and corner-sharing HLiMg3Ru square pyramids. In the second H site, H(2) is bonded in a linear geometry to two equivalent Mg(1) atoms.