LiMg17Al11 is gamma-brass-derived structured and crystallizes in the monoclinic Cm space group. Li(1) is bonded in a 11-coordinate geometry to one Mg(2), one Mg(3), two equivalent Mg(6), two equivalent Mg(7), two equivalent Mg(9), one Al(1), and two equivalent Al(3) atoms. There are eleven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to one Mg(2), one Mg(3), two equivalent Mg(8), two equivalent Al(2), two equivalent Al(3), and two equivalent Al(5) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to one Li(1), one Mg(1), two equivalent Mg(11), two equivalent Mg(6), two equivalent Mg(7), two equivalent Al(2), and two equivalent Al(4) atoms. In the third Mg site, Mg(3) is bonded in a 16-coordinate geometry to one Li(1), one Mg(1), one Mg(4), two equivalent Mg(9), one Al(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(6) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to one Mg(3), one Mg(5), two equivalent Mg(7), two equivalent Al(2), two equivalent Al(4), and two equivalent Al(6) atoms. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Mg(4), two equivalent Mg(10), two equivalent Mg(6), two equivalent Mg(8), one Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. In the sixth Mg site, Mg(6) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(11), one Mg(2), one Mg(5), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(2), one Al(5), and one Al(6) atom. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(2), one Mg(4), one Mg(6), one Mg(8), two equivalent Mg(11), one Al(3), one Al(4), one Al(5), and one Al(6) atom. In the eighth Mg site, Mg(8) is bonded in a 12-coordinate geometry to one Mg(1), one Mg(11), one Mg(5), one Mg(6), one Mg(7), two equivalent Mg(10), one Al(1), one Al(3), one Al(4), one Al(5), and one Al(6) atom. In the ninth Mg site, Mg(9) is bonded in a 10-coordinate geometry to one Li(1), one Mg(10), one Mg(11), one Mg(3), one Mg(6), one Al(1), one Al(3), one Al(4), one Al(5), and one Al(6) atom. In the tenth Mg site, Mg(10) is bonded in a 12-coordinate geometry to one Mg(11), one Mg(5), one Mg(6), one Mg(7), one Mg(9), two equivalent Mg(8), one Al(2), one Al(3), one Al(4), and two equivalent Al(6) atoms. In the eleventh Mg site, Mg(11) is bonded in a 12-coordinate geometry to one Mg(10), one Mg(2), one Mg(6), one Mg(8), one Mg(9), two equivalent Mg(7), one Al(2), one Al(3), one Al(4), and two equivalent Al(5) atoms. There are six inequivalent Al sites. In the first Al site, Al(1) is bonded in a 11-coordinate geometry to one Li(1), one Mg(3), one Mg(5), two equivalent Mg(6), two equivalent Mg(8), two equivalent Mg(9), and two equivalent Al(4) atoms. In the second Al site, Al(2) is bonded in a 11-coordinate geometry to one Mg(1), one Mg(10), one Mg(11), one Mg(2), one Mg(3), one Mg(4), one Mg(5), one Mg(6), one Al(2), one Al(5), and one Al(6) atom. In the third Al site, Al(3) is bonded in a 11-coordinate geometry to one Li(1), one Mg(1), one Mg(10), one Mg(11), one Mg(3), one Mg(5), one Mg(7), one Mg(8), one Mg(9), one Al(3), and one Al(5) atom. In the fourth Al site, Al(4) is bonded in a 11-coordinate geometry to one Mg(10), one Mg(11), one Mg(2), one Mg(3), one Mg(4), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(4), and one Al(6) atom. In the fifth Al site, Al(5) is bonded in a distorted q6 geometry to one Mg(1), one Mg(3), one Mg(6), one Mg(7), one Mg(8), one Mg(9), two equivalent Mg(11), one Al(2), one Al(3), and one Al(6) atom. In the sixth Al site, Al(6) is bonded in a 11-coordinate geometry to one Mg(3), one Mg(4), one Mg(6), one Mg(7), one Mg(8), one Mg(9), two equivalent Mg(10), one Al(2), one Al(4), and one Al(5) atom.
LiMg17Al11 is gamma-brass-derived structured and crystallizes in the monoclinic Cm space group. Li(1) is bonded in a 11-coordinate geometry to one Mg(2), one Mg(3), two equivalent Mg(6), two equivalent Mg(7), two equivalent Mg(9), one Al(1), and two equivalent Al(3) atoms. The Li(1)-Mg(2) bond length is 2.93 Å. The Li(1)-Mg(3) bond length is 3.21 Å. Both Li(1)-Mg(6) bond lengths are 3.16 Å. Both Li(1)-Mg(7) bond lengths are 2.96 Å. Both Li(1)-Mg(9) bond lengths are 3.08 Å. The Li(1)-Al(1) bond length is 2.71 Å. Both Li(1)-Al(3) bond lengths are 2.76 Å. There are eleven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to one Mg(2), one Mg(3), two equivalent Mg(8), two equivalent Al(2), two equivalent Al(3), and two equivalent Al(5) atoms. The Mg(1)-Mg(2) bond length is 3.04 Å. The Mg(1)-Mg(3) bond length is 3.16 Å. Both Mg(1)-Mg(8) bond lengths are 3.04 Å. Both Mg(1)-Al(2) bond lengths are 3.13 Å. Both Mg(1)-Al(3) bond lengths are 3.11 Å. Both Mg(1)-Al(5) bond lengths are 3.06 Å. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to one Li(1), one Mg(1), two equivalent Mg(11), two equivalent Mg(6), two equivalent Mg(7), two equivalent Al(2), and two equivalent Al(4) atoms. Both Mg(2)-Mg(11) bond lengths are 3.14 Å. Both Mg(2)-Mg(6) bond lengths are 3.15 Å. Both Mg(2)-Mg(7) bond lengths are 3.14 Å. Both Mg(2)-Al(2) bond lengths are 3.19 Å. Both Mg(2)-Al(4) bond lengths are 3.00 Å. In the third Mg site, Mg(3) is bonded in a 16-coordinate geometry to one Li(1), one Mg(1), one Mg(4), two equivalent Mg(9), one Al(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(6) atoms. The Mg(3)-Mg(4) bond length is 3.20 Å. Both Mg(3)-Mg(9) bond lengths are 3.11 Å. The Mg(3)-Al(1) bond length is 3.17 Å. Both Mg(3)-Al(2) bond lengths are 3.20 Å. Both Mg(3)-Al(3) bond lengths are 3.24 Å. Both Mg(3)-Al(4) bond lengths are 3.22 Å. Both Mg(3)-Al(5) bond lengths are 3.16 Å. Both Mg(3)-Al(6) bond lengths are 3.18 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to one Mg(3), one Mg(5), two equivalent Mg(7), two equivalent Al(2), two equivalent Al(4), and two equivalent Al(6) atoms. The Mg(4)-Mg(5) bond length is 3.07 Å. Both Mg(4)-Mg(7) bond lengths are 3.04 Å. Both Mg(4)-Al(2) bond lengths are 3.09 Å. Both Mg(4)-Al(4) bond lengths are 3.11 Å. Both Mg(4)-Al(6) bond lengths are 3.08 Å. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Mg(4), two equivalent Mg(10), two equivalent Mg(6), two equivalent Mg(8), one Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. Both Mg(5)-Mg(10) bond lengths are 3.13 Å. Both Mg(5)-Mg(6) bond lengths are 3.12 Å. Both Mg(5)-Mg(8) bond lengths are 3.13 Å. The Mg(5)-Al(1) bond length is 2.91 Å. Both Mg(5)-Al(2) bond lengths are 3.21 Å. Both Mg(5)-Al(3) bond lengths are 2.97 Å. In the sixth Mg site, Mg(6) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(11), one Mg(2), one Mg(5), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(2), one Al(5), and one Al(6) atom. The Mg(6)-Mg(10) bond length is 3.16 Å. The Mg(6)-Mg(11) bond length is 3.20 Å. The Mg(6)-Mg(7) bond length is 3.17 Å. The Mg(6)-Mg(8) bond length is 3.21 Å. The Mg(6)-Mg(9) bond length is 3.05 Å. The Mg(6)-Al(1) bond length is 3.18 Å. The Mg(6)-Al(2) bond length is 2.91 Å. The Mg(6)-Al(5) bond length is 2.98 Å. The Mg(6)-Al(6) bond length is 2.97 Å. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(2), one Mg(4), one Mg(6), one Mg(8), two equivalent Mg(11), one Al(3), one Al(4), one Al(5), and one Al(6) atom. The Mg(7)-Mg(10) bond length is 3.15 Å. The Mg(7)-Mg(8) bond length is 3.12 Å. There is one shorter (3.14 Å) and one longer (3.15 Å) Mg(7)-Mg(11) bond length. The Mg(7)-Al(3) bond length is 2.98 Å. The Mg(7)-Al(4) bond length is 3.23 Å. The Mg(7)-Al(5) bond length is 2.91 Å. The Mg(7)-Al(6) bond length is 3.23 Å. In the eighth Mg site, Mg(8) is bonded in a 12-coordinate geometry to one Mg(1), one Mg(11), one Mg(5), one Mg(6), one Mg(7), two equivalent Mg(10), one Al(1), one Al(3), one Al(4), one Al(5), and one Al(6) atom. The Mg(8)-Mg(11) bond length is 3.21 Å. There is one shorter (3.13 Å) and one longer (3.16 Å) Mg(8)-Mg(10) bond length. The Mg(8)-Al(1) bond length is 2.99 Å. The Mg(8)-Al(3) bond length is 3.12 Å. The Mg(8)-Al(4) bond length is 2.98 Å. The Mg(8)-Al(5) bond length is 3.18 Å. The Mg(8)-Al(6) bond length is 2.91 Å. In the ninth Mg site, Mg(9) is bonded in a 10-coordinate geometry to one Li(1), one Mg(10), one Mg(11), one Mg(3), one Mg(6), one Al(1), one Al(3), one Al(4), one Al(5), and one Al(6) atom. The Mg(9)-Mg(10) bond length is 3.06 Å. The Mg(9)-Mg(11) bond length is 3.05 Å. The Mg(9)-Al(1) bond length is 3.06 Å. The Mg(9)-Al(3) bond length is 3.12 Å. The Mg(9)-Al(4) bond length is 3.13 Å. The Mg(9)-Al(5) bond length is 3.09 Å. The Mg(9)-Al(6) bond length is 3.12 Å. In the tenth Mg site, Mg(10) is bonded in a 12-coordinate geometry to one Mg(11), one Mg(5), one Mg(6), one Mg(7), one Mg(9), two equivalent Mg(8), one Al(2), one Al(3), one Al(4), and two equivalent Al(6) atoms. The Mg(10)-Mg(11) bond length is 3.15 Å. The Mg(10)-Al(2) bond length is 2.98 Å. The Mg(10)-Al(3) bond length is 2.91 Å. The Mg(10)-Al(4) bond length is 3.14 Å. There is one shorter (3.00 Å) and one longer (3.17 Å) Mg(10)-Al(6) bond length. In the eleventh Mg site, Mg(11) is bonded in a 12-coordinate geometry to one Mg(10), one Mg(2), one Mg(6), one Mg(8), one Mg(9), two equivalent Mg(7), one Al(2), one Al(3), one Al(4), and two equivalent Al(5) atoms. The Mg(11)-Al(2) bond length is 3.00 Å. The Mg(11)-Al(3) bond length is 3.13 Å. The Mg(11)-Al(4) bond length is 2.90 Å. There is one shorter (2.97 Å) and one longer (3.19 Å) Mg(11)-Al(5) bond length. There are six inequivalent Al sites. In the first Al site, Al(1) is bonded in a 11-coordinate geometry to one Li(1), one Mg(3), one Mg(5), two equivalent Mg(6), two equivalent Mg(8), two equivalent Mg(9), and two equivalent Al(4) atoms. Both Al(1)-Al(4) bond lengths are 2.76 Å. In the second Al site, Al(2) is bonded in a 11-coordinate geometry to one Mg(1), one Mg(10), one Mg(11), one Mg(2), one Mg(3), one Mg(4), one Mg(5), one Mg(6), one Al(2), one Al(5), and one Al(6) atom. The Al(2)-Al(2) bond length is 2.68 Å. The Al(2)-Al(5) bond length is 2.75 Å. The Al(2)-Al(6) bond length is 2.72 Å. In the third Al site, Al(3) is bonded in a 11-coordinate geometry to one Li(1), one Mg(1), one Mg(10), one Mg(11), one Mg(3), one Mg(5), one Mg(7), one Mg(8), one Mg(9), one Al(3), and one Al(5) atom. The Al(3)-Al(3) bond length is 2.73 Å. The Al(3)-Al(5) bond length is 2.71 Å. In the fourth Al site, Al(4) is bonded in a 11-coordinate geometry to one Mg(10), one Mg(11), one Mg(2), one Mg(3), one Mg(4), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(4), and one Al(6) atom. The Al(4)-Al(4) bond length is 2.73 Å. The Al(4)-Al(6) bond length is 2.70 Å. In the fifth Al site, Al(5) is bonded in a distorted q6 geometry to one Mg(1), one Mg(3), one Mg(6), one Mg(7), one Mg(8), one Mg(9), two equivalent Mg(11), one Al(2), one Al(3), and one Al(6) atom. The Al(5)-Al(6) bond length is 2.78 Å. In the sixth Al site, Al(6) is bonded in a 11-coordinate geometry to one Mg(3), one Mg(4), one Mg(6), one Mg(7), one Mg(8), one Mg(9), two equivalent Mg(10), one Al(2), one Al(4), and one Al(5) atom.