Li17(MnAs2)4 crystallizes in the triclinic P1 space group. There are seventeen inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one Li(13), one Li(7), one Mn(3), one As(1), one As(2), one As(4), and one As(6) atom. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one Li(13), one Li(7), one Mn(4), one As(1), one As(2), one As(4), and one As(6) atom. In the third Li site, Li(3) is bonded to one Li(13), one Li(6), one As(1), one As(3), one As(4), and one As(7) atom to form distorted LiLi2As4 tetrahedra that share corners with four equivalent Li(11)Li4As4 tetrahedra,  an edgeedge with one Li(4)Li2As4 tetrahedra, edges with two equivalent Li(8)Li4As4 tetrahedra,  a faceface with one Li(4)Li2As4 tetrahedra, and  a faceface with one Li(5)Li3MnAs4 tetrahedra. In the fourth Li site, Li(4) is bonded to one Li(13), one Li(6), one As(1), one As(3), one As(4), and one As(7) atom to form distorted LiLi2As4 tetrahedra that share  a cornercorner with one Li(5)Li3MnAs4 tetrahedra, corners with four equivalent Li(8)Li4As4 tetrahedra,  an edgeedge with one Li(3)Li2As4 tetrahedra,  an edgeedge with one Li(5)Li3MnAs4 tetrahedra, edges with two equivalent Li(11)Li4As4 tetrahedra, and  a faceface with one Li(3)Li2As4 tetrahedra. In the fifth Li site, Li(5) is bonded to one Li(17), one Li(6), one Li(7), one Mn(3), one As(1), one As(2), one As(3), and one As(8) atom to form distorted LiLi3MnAs4 tetrahedra that share  a cornercorner with one Li(4)Li2As4 tetrahedra,  an edgeedge with one Li(4)Li2As4 tetrahedra, edges with two equivalent Li(11)Li4As4 tetrahedra,  a faceface with one Li(3)Li2As4 tetrahedra, and  a faceface with one Li(8)Li4As4 tetrahedra. In the sixth Li site, Li(6) is bonded in a 14-coordinate geometry to one Li(10), one Li(11), one Li(3), one Li(4), one Li(5), one Li(8), one Li(9), one Mn(1), one As(1), one As(2), one As(5), one As(7), and two equivalent As(3) atoms. In the seventh Li site, Li(7) is bonded in a 14-coordinate geometry to one Li(1), one Li(11), one Li(14), one Li(15), one Li(2), one Li(5), one Li(8), one Mn(1), one As(3), one As(4), one As(6), one As(8), and two equivalent As(2) atoms. In the eighth Li site, Li(8) is bonded to one Li(12), one Li(13), one Li(6), one Li(7), one As(2), one As(3), one As(4), and one As(5) atom to form distorted LiLi4As4 tetrahedra that share corners with four equivalent Li(4)Li2As4 tetrahedra, edges with two equivalent Li(3)Li2As4 tetrahedra,  a faceface with one Li(5)Li3MnAs4 tetrahedra, and faces with two equivalent Li(11)Li4As4 tetrahedra. In the ninth Li site, Li(9) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(6), one Mn(3), one As(3), one As(5), one As(7), and one As(8) atom. In the tenth Li site, Li(10) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(6), one Mn(4), one As(3), one As(5), one As(7), and one As(8) atom. In the eleventh Li site, Li(11) is bonded to one Li(12), one Li(13), one Li(6), one Li(7), one As(2), one As(3), one As(4), and one As(5) atom to form distorted LiLi4As4 tetrahedra that share corners with four equivalent Li(3)Li2As4 tetrahedra, edges with two equivalent Li(4)Li2As4 tetrahedra, edges with two equivalent Li(5)Li3MnAs4 tetrahedra, and faces with two equivalent Li(8)Li4As4 tetrahedra. In the twelfth Li site, Li(12) is bonded in a 14-coordinate geometry to one Li(10), one Li(11), one Li(14), one Li(15), one Li(16), one Li(8), one Li(9), one Mn(2), one As(3), one As(4), one As(6), one As(8), and two equivalent As(5) atoms. In the thirteenth Li site, Li(13) is bonded in a 14-coordinate geometry to one Li(1), one Li(11), one Li(16), one Li(2), one Li(3), one Li(4), one Li(8), one Mn(2), one As(1), one As(2), one As(5), one As(7), and two equivalent As(4) atoms. In the fourteenth Li site, Li(14) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(7), one As(2), one As(5), one As(6), and one As(8) atom. In the fifteenth Li site, Li(15) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(7), one As(2), one As(5), one As(6), and one As(8) atom. In the sixteenth Li site, Li(16) is bonded in a 4-coordinate geometry to one Li(12), one Li(13), one Mn(3), one As(4), one As(5), one As(6), and one As(7) atom. In the seventeenth Li site, Li(17) is bonded in a 14-coordinate geometry to one Li(10), one Li(14), one Li(15), one Li(5), one Li(9), one Mn(1), one Mn(3), one Mn(4), one As(1), one As(2), one As(5), one As(7), and two equivalent As(8) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 7-coordinate geometry to one Li(17), one Li(6), one Li(7), one As(1), one As(2), one As(3), and one As(8) atom. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one Li(12), one Li(13), one As(4), one As(5), one As(6), and one As(7) atom. In the third Mn site, Mn(3) is bonded in a 9-coordinate geometry to one Li(1), one Li(16), one Li(17), one Li(5), one Li(9), one As(1), one As(6), one As(7), and one As(8) atom. In the fourth Mn site, Mn(4) is bonded in a 7-coordinate geometry to one Li(10), one Li(17), one Li(2), one As(1), one As(6), one As(7), and one As(8) atom. There are eight inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to one Li(1), one Li(13), one Li(17), one Li(2), one Li(3), one Li(4), one Li(5), one Li(6), one Mn(1), one Mn(3), and one Mn(4) atom. In the second As site, As(2) is bonded in a 13-coordinate geometry to one Li(1), one Li(11), one Li(13), one Li(14), one Li(15), one Li(17), one Li(2), one Li(5), one Li(6), one Li(8), two equivalent Li(7), and one Mn(1) atom. In the third As site, As(3) is bonded in a 8-coordinate geometry to one Li(10), one Li(11), one Li(12), one Li(3), one Li(4), one Li(5), one Li(7), one Li(8), one Li(9), two equivalent Li(6), and one Mn(1) atom. In the fourth As site, As(4) is bonded in a 8-coordinate geometry to one Li(1), one Li(11), one Li(12), one Li(16), one Li(2), one Li(3), one Li(4), one Li(7), one Li(8), two equivalent Li(13), and one Mn(2) atom. In the fifth As site, As(5) is bonded in a 13-coordinate geometry to one Li(10), one Li(11), one Li(13), one Li(14), one Li(15), one Li(16), one Li(17), one Li(6), one Li(8), one Li(9), two equivalent Li(12), and one Mn(2) atom. In the sixth As site, As(6) is bonded in a distorted body-centered cubic geometry to one Li(1), one Li(12), one Li(14), one Li(15), one Li(16), one Li(2), one Li(7), one Mn(2), one Mn(3), and one Mn(4) atom. In the seventh As site, As(7) is bonded in a 8-coordinate geometry to one Li(10), one Li(13), one Li(16), one Li(17), one Li(3), one Li(4), one Li(6), one Li(9), one Mn(2), one Mn(3), and one Mn(4) atom. In the eighth As site, As(8) is bonded in a 8-coordinate geometry to one Li(10), one Li(12), one Li(14), one Li(15), one Li(5), one Li(7), one Li(9), two equivalent Li(17), one Mn(1), one Mn(3), and one Mn(4) atom.
Li17(MnAs2)4 crystallizes in the triclinic P1 space group. There are seventeen inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one Li(13), one Li(7), one Mn(3), one As(1), one As(2), one As(4), and one As(6) atom. The Li(1)-Li(13) bond length is 2.67 Å. The Li(1)-Li(7) bond length is 2.69 Å. The Li(1)-Mn(3) bond length is 2.89 Å. The Li(1)-As(1) bond length is 2.61 Å. The Li(1)-As(2) bond length is 2.85 Å. The Li(1)-As(4) bond length is 2.75 Å. The Li(1)-As(6) bond length is 2.59 Å. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one Li(13), one Li(7), one Mn(4), one As(1), one As(2), one As(4), and one As(6) atom. The Li(2)-Li(13) bond length is 2.69 Å. The Li(2)-Li(7) bond length is 2.70 Å. The Li(2)-Mn(4) bond length is 2.92 Å. The Li(2)-As(1) bond length is 2.62 Å. The Li(2)-As(2) bond length is 2.78 Å. The Li(2)-As(4) bond length is 2.75 Å. The Li(2)-As(6) bond length is 2.60 Å. In the third Li site, Li(3) is bonded to one Li(13), one Li(6), one As(1), one As(3), one As(4), and one As(7) atom to form distorted LiLi2As4 tetrahedra that share corners with four equivalent Li(11)Li4As4 tetrahedra,  an edgeedge with one Li(4)Li2As4 tetrahedra, edges with two equivalent Li(8)Li4As4 tetrahedra,  a faceface with one Li(4)Li2As4 tetrahedra, and  a faceface with one Li(5)Li3MnAs4 tetrahedra. The Li(3)-Li(13) bond length is 2.74 Å. The Li(3)-Li(6) bond length is 2.77 Å. The Li(3)-As(1) bond length is 2.78 Å. The Li(3)-As(3) bond length is 2.63 Å. The Li(3)-As(4) bond length is 2.63 Å. The Li(3)-As(7) bond length is 2.77 Å. In the fourth Li site, Li(4) is bonded to one Li(13), one Li(6), one As(1), one As(3), one As(4), and one As(7) atom to form distorted LiLi2As4 tetrahedra that share  a cornercorner with one Li(5)Li3MnAs4 tetrahedra, corners with four equivalent Li(8)Li4As4 tetrahedra,  an edgeedge with one Li(3)Li2As4 tetrahedra,  an edgeedge with one Li(5)Li3MnAs4 tetrahedra, edges with two equivalent Li(11)Li4As4 tetrahedra, and  a faceface with one Li(3)Li2As4 tetrahedra. The Li(4)-Li(13) bond length is 2.76 Å. The Li(4)-Li(6) bond length is 2.78 Å. The Li(4)-As(1) bond length is 2.73 Å. The Li(4)-As(3) bond length is 2.64 Å. The Li(4)-As(4) bond length is 2.63 Å. The Li(4)-As(7) bond length is 2.75 Å. In the fifth Li site, Li(5) is bonded to one Li(17), one Li(6), one Li(7), one Mn(3), one As(1), one As(2), one As(3), and one As(8) atom to form distorted LiLi3MnAs4 tetrahedra that share  a cornercorner with one Li(4)Li2As4 tetrahedra,  an edgeedge with one Li(4)Li2As4 tetrahedra, edges with two equivalent Li(11)Li4As4 tetrahedra,  a faceface with one Li(3)Li2As4 tetrahedra, and  a faceface with one Li(8)Li4As4 tetrahedra. The Li(5)-Li(17) bond length is 2.71 Å. The Li(5)-Li(6) bond length is 2.71 Å. The Li(5)-Li(7) bond length is 2.73 Å. The Li(5)-Mn(3) bond length is 3.03 Å. The Li(5)-As(1) bond length is 2.59 Å. The Li(5)-As(2) bond length is 2.71 Å. The Li(5)-As(3) bond length is 2.59 Å. The Li(5)-As(8) bond length is 2.60 Å. In the sixth Li site, Li(6) is bonded in a 14-coordinate geometry to one Li(10), one Li(11), one Li(3), one Li(4), one Li(5), one Li(8), one Li(9), one Mn(1), one As(1), one As(2), one As(5), one As(7), and two equivalent As(3) atoms. The Li(6)-Li(10) bond length is 2.69 Å. The Li(6)-Li(11) bond length is 2.66 Å. The Li(6)-Li(8) bond length is 2.62 Å. The Li(6)-Li(9) bond length is 2.66 Å. The Li(6)-Mn(1) bond length is 2.73 Å. The Li(6)-As(1) bond length is 3.04 Å. The Li(6)-As(2) bond length is 3.02 Å. The Li(6)-As(5) bond length is 2.97 Å. The Li(6)-As(7) bond length is 3.03 Å. There is one shorter (3.06 Å) and one longer (3.09 Å) Li(6)-As(3) bond length. In the seventh Li site, Li(7) is bonded in a 14-coordinate geometry to one Li(1), one Li(11), one Li(14), one Li(15), one Li(2), one Li(5), one Li(8), one Mn(1), one As(3), one As(4), one As(6), one As(8), and two equivalent As(2) atoms. The Li(7)-Li(11) bond length is 2.65 Å. The Li(7)-Li(14) bond length is 2.74 Å. The Li(7)-Li(15) bond length is 2.75 Å. The Li(7)-Li(8) bond length is 2.62 Å. The Li(7)-Mn(1) bond length is 2.74 Å. The Li(7)-As(3) bond length is 3.02 Å. The Li(7)-As(4) bond length is 2.95 Å. The Li(7)-As(6) bond length is 3.05 Å. The Li(7)-As(8) bond length is 3.06 Å. Both Li(7)-As(2) bond lengths are 3.07 Å. In the eighth Li site, Li(8) is bonded to one Li(12), one Li(13), one Li(6), one Li(7), one As(2), one As(3), one As(4), and one As(5) atom to form distorted LiLi4As4 tetrahedra that share corners with four equivalent Li(4)Li2As4 tetrahedra, edges with two equivalent Li(3)Li2As4 tetrahedra,  a faceface with one Li(5)Li3MnAs4 tetrahedra, and faces with two equivalent Li(11)Li4As4 tetrahedra. The Li(8)-Li(12) bond length is 2.60 Å. The Li(8)-Li(13) bond length is 2.64 Å. The Li(8)-As(2) bond length is 2.62 Å. The Li(8)-As(3) bond length is 2.60 Å. The Li(8)-As(4) bond length is 2.61 Å. The Li(8)-As(5) bond length is 2.63 Å. In the ninth Li site, Li(9) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(6), one Mn(3), one As(3), one As(5), one As(7), and one As(8) atom. The Li(9)-Li(12) bond length is 2.68 Å. The Li(9)-Li(17) bond length is 2.69 Å. The Li(9)-Mn(3) bond length is 3.01 Å. The Li(9)-As(3) bond length is 2.62 Å. The Li(9)-As(5) bond length is 2.82 Å. The Li(9)-As(7) bond length is 2.60 Å. The Li(9)-As(8) bond length is 2.61 Å. In the tenth Li site, Li(10) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(6), one Mn(4), one As(3), one As(5), one As(7), and one As(8) atom. The Li(10)-Li(12) bond length is 2.70 Å. The Li(10)-Li(17) bond length is 2.71 Å. The Li(10)-Mn(4) bond length is 3.02 Å. The Li(10)-As(3) bond length is 2.61 Å. The Li(10)-As(5) bond length is 2.78 Å. The Li(10)-As(7) bond length is 2.60 Å. The Li(10)-As(8) bond length is 2.62 Å. In the eleventh Li site, Li(11) is bonded to one Li(12), one Li(13), one Li(6), one Li(7), one As(2), one As(3), one As(4), and one As(5) atom to form distorted LiLi4As4 tetrahedra that share corners with four equivalent Li(3)Li2As4 tetrahedra, edges with two equivalent Li(4)Li2As4 tetrahedra, edges with two equivalent Li(5)Li3MnAs4 tetrahedra, and faces with two equivalent Li(8)Li4As4 tetrahedra. The Li(11)-Li(12) bond length is 2.64 Å. The Li(11)-Li(13) bond length is 2.68 Å. The Li(11)-As(2) bond length is 2.60 Å. The Li(11)-As(3) bond length is 2.59 Å. The Li(11)-As(4) bond length is 2.58 Å. The Li(11)-As(5) bond length is 2.60 Å. In the twelfth Li site, Li(12) is bonded in a 14-coordinate geometry to one Li(10), one Li(11), one Li(14), one Li(15), one Li(16), one Li(8), one Li(9), one Mn(2), one As(3), one As(4), one As(6), one As(8), and two equivalent As(5) atoms. The Li(12)-Li(14) bond length is 2.75 Å. The Li(12)-Li(15) bond length is 2.77 Å. The Li(12)-Li(16) bond length is 2.72 Å. The Li(12)-Mn(2) bond length is 2.75 Å. The Li(12)-As(3) bond length is 2.95 Å. The Li(12)-As(4) bond length is 2.96 Å. The Li(12)-As(6) bond length is 3.07 Å. The Li(12)-As(8) bond length is 3.08 Å. There is one shorter (3.05 Å) and one longer (3.09 Å) Li(12)-As(5) bond length. In the thirteenth Li site, Li(13) is bonded in a 14-coordinate geometry to one Li(1), one Li(11), one Li(16), one Li(2), one Li(3), one Li(4), one Li(8), one Mn(2), one As(1), one As(2), one As(5), one As(7), and two equivalent As(4) atoms. The Li(13)-Li(16) bond length is 2.72 Å. The Li(13)-Mn(2) bond length is 2.74 Å. The Li(13)-As(1) bond length is 3.06 Å. The Li(13)-As(2) bond length is 3.07 Å. The Li(13)-As(5) bond length is 3.10 Å. The Li(13)-As(7) bond length is 3.09 Å. There is one shorter (3.05 Å) and one longer (3.09 Å) Li(13)-As(4) bond length. In the fourteenth Li site, Li(14) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(7), one As(2), one As(5), one As(6), and one As(8) atom. The Li(14)-Li(17) bond length is 2.64 Å. The Li(14)-As(2) bond length is 2.63 Å. The Li(14)-As(5) bond length is 2.62 Å. The Li(14)-As(6) bond length is 2.59 Å. The Li(14)-As(8) bond length is 2.82 Å. In the fifteenth Li site, Li(15) is bonded in a 4-coordinate geometry to one Li(12), one Li(17), one Li(7), one As(2), one As(5), one As(6), and one As(8) atom. The Li(15)-Li(17) bond length is 2.65 Å. The Li(15)-As(2) bond length is 2.62 Å. The Li(15)-As(5) bond length is 2.62 Å. The Li(15)-As(6) bond length is 2.58 Å. The Li(15)-As(8) bond length is 2.79 Å. In the sixteenth Li site, Li(16) is bonded in a 4-coordinate geometry to one Li(12), one Li(13), one Mn(3), one As(4), one As(5), one As(6), and one As(7) atom. The Li(16)-Mn(3) bond length is 2.91 Å. The Li(16)-As(4) bond length is 2.71 Å. The Li(16)-As(5) bond length is 2.75 Å. The Li(16)-As(6) bond length is 2.59 Å. The Li(16)-As(7) bond length is 2.60 Å. In the seventeenth Li site, Li(17) is bonded in a 14-coordinate geometry to one Li(10), one Li(14), one Li(15), one Li(5), one Li(9), one Mn(1), one Mn(3), one Mn(4), one As(1), one As(2), one As(5), one As(7), and two equivalent As(8) atoms. The Li(17)-Mn(1) bond length is 2.74 Å. The Li(17)-Mn(3) bond length is 2.79 Å. The Li(17)-Mn(4) bond length is 2.79 Å. The Li(17)-As(1) bond length is 3.12 Å. The Li(17)-As(2) bond length is 2.96 Å. The Li(17)-As(5) bond length is 3.00 Å. The Li(17)-As(7) bond length is 3.08 Å. There is one shorter (3.04 Å) and one longer (3.10 Å) Li(17)-As(8) bond length. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 7-coordinate geometry to one Li(17), one Li(6), one Li(7), one As(1), one As(2), one As(3), and one As(8) atom. The Mn(1)-As(1) bond length is 2.59 Å. The Mn(1)-As(2) bond length is 2.67 Å. The Mn(1)-As(3) bond length is 2.59 Å. The Mn(1)-As(8) bond length is 2.61 Å. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one Li(12), one Li(13), one As(4), one As(5), one As(6), and one As(7) atom. The Mn(2)-As(4) bond length is 2.65 Å. The Mn(2)-As(5) bond length is 2.71 Å. The Mn(2)-As(6) bond length is 2.60 Å. The Mn(2)-As(7) bond length is 2.61 Å. In the third Mn site, Mn(3) is bonded in a 9-coordinate geometry to one Li(1), one Li(16), one Li(17), one Li(5), one Li(9), one As(1), one As(6), one As(7), and one As(8) atom. The Mn(3)-As(1) bond length is 2.70 Å. The Mn(3)-As(6) bond length is 2.61 Å. The Mn(3)-As(7) bond length is 2.69 Å. The Mn(3)-As(8) bond length is 2.69 Å. In the fourth Mn site, Mn(4) is bonded in a 7-coordinate geometry to one Li(10), one Li(17), one Li(2), one As(1), one As(6), one As(7), and one As(8) atom. The Mn(4)-As(1) bond length is 2.66 Å. The Mn(4)-As(6) bond length is 2.63 Å. The Mn(4)-As(7) bond length is 2.68 Å. The Mn(4)-As(8) bond length is 2.70 Å. There are eight inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to one Li(1), one Li(13), one Li(17), one Li(2), one Li(3), one Li(4), one Li(5), one Li(6), one Mn(1), one Mn(3), and one Mn(4) atom. In the second As site, As(2) is bonded in a 13-coordinate geometry to one Li(1), one Li(11), one Li(13), one Li(14), one Li(15), one Li(17), one Li(2), one Li(5), one Li(6), one Li(8), two equivalent Li(7), and one Mn(1) atom. In the third As site, As(3) is bonded in a 8-coordinate geometry to one Li(10), one Li(11), one Li(12), one Li(3), one Li(4), one Li(5), one Li(7), one Li(8), one Li(9), two equivalent Li(6), and one Mn(1) atom. In the fourth As site, As(4) is bonded in a 8-coordinate geometry to one Li(1), one Li(11), one Li(12), one Li(16), one Li(2), one Li(3), one Li(4), one Li(7), one Li(8), two equivalent Li(13), and one Mn(2) atom. In the fifth As site, As(5) is bonded in a 13-coordinate geometry to one Li(10), one Li(11), one Li(13), one Li(14), one Li(15), one Li(16), one Li(17), one Li(6), one Li(8), one Li(9), two equivalent Li(12), and one Mn(2) atom. In the sixth As site, As(6) is bonded in a distorted body-centered cubic geometry to one Li(1), one Li(12), one Li(14), one Li(15), one Li(16), one Li(2), one Li(7), one Mn(2), one Mn(3), and one Mn(4) atom. In the seventh As site, As(7) is bonded in a 8-coordinate geometry to one Li(10), one Li(13), one Li(16), one Li(17), one Li(3), one Li(4), one Li(6), one Li(9), one Mn(2), one Mn(3), and one Mn(4) atom. In the eighth As site, As(8) is bonded in a 8-coordinate geometry to one Li(10), one Li(12), one Li(14), one Li(15), one Li(5), one Li(7), one Li(9), two equivalent Li(17), one Mn(1), one Mn(3), and one Mn(4) atom.