CsMg14Cr crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded to two equivalent Mg(6), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Cr(1) atoms to form CsMg10Cr2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra, corners with six equivalent Cs(1)Mg10Cr2 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Cr(1)Cs2Mg10 cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Cr(1)Cs2Mg10 cuboctahedra, and faces with four equivalent Mg(5)CsMg10Cr cuboctahedra. There are seven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2), two equivalent Mg(6), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cr(1)Cs2Mg10 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Cs(1)Mg10Cr2 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(7), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Cr2 cuboctahedra, corners with six equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Cr(1)Cs2Mg10 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, and faces with six equivalent Mg(6)CsMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Cs(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Cr(1) atoms. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), and two equivalent Mg(7) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Cr2 cuboctahedra, corners with four equivalent Cr(1)Cs2Mg10 cuboctahedra, corners with six equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(5)CsMg10Cr cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, and faces with eight equivalent Mg(5)CsMg10Cr cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Cs(1), one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Cr(1) atom to form distorted MgCsMg10Cr cuboctahedra that share corners with four equivalent Mg(6)CsMg11 cuboctahedra, corners with ten equivalent Mg(5)CsMg10Cr cuboctahedra, edges with two equivalent Cs(1)Mg10Cr2 cuboctahedra, edges with two equivalent Mg(5)CsMg10Cr cuboctahedra, edges with two equivalent Mg(6)CsMg11 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Cr(1)Cs2Mg10 cuboctahedra,  a faceface with one Cs(1)Mg10Cr2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra,  a faceface with one Cr(1)Cs2Mg10 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. In the sixth Mg site, Mg(6) is bonded to one Cs(1), one Mg(1), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(7), and four equivalent Mg(5) atoms to form distorted MgCsMg11 cuboctahedra that share corners with six equivalent Mg(6)CsMg11 cuboctahedra, corners with eight equivalent Mg(5)CsMg10Cr cuboctahedra, edges with two equivalent Cs(1)Mg10Cr2 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(5)CsMg10Cr cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra,  a faceface with one Cs(1)Mg10Cr2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with three equivalent Mg(2)Mg12 cuboctahedra, faces with three equivalent Cr(1)Cs2Mg10 cuboctahedra, and faces with four equivalent Mg(5)CsMg10Cr cuboctahedra. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), four equivalent Mg(5), and one Cr(1) atom. Cr(1) is bonded to two equivalent Cs(1), two equivalent Mg(7), four equivalent Mg(3), and four equivalent Mg(5) atoms to form CrCs2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Cr(1)Cs2Mg10 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Cs(1)Mg10Cr2 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Cs(1)Mg10Cr2 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, and faces with six equivalent Mg(6)CsMg11 cuboctahedra.
CsMg14Cr crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded to two equivalent Mg(6), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Cr(1) atoms to form CsMg10Cr2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra, corners with six equivalent Cs(1)Mg10Cr2 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Cr(1)Cs2Mg10 cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Cr(1)Cs2Mg10 cuboctahedra, and faces with four equivalent Mg(5)CsMg10Cr cuboctahedra. Both Cs(1)-Mg(6) bond lengths are 3.47 Å. There are two shorter (3.25 Å) and two longer (3.27 Å) Cs(1)-Mg(3) bond lengths. All Cs(1)-Mg(5) bond lengths are 3.44 Å. Both Cs(1)-Cr(1) bond lengths are 3.25 Å. There are seven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2), two equivalent Mg(6), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cr(1)Cs2Mg10 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Cs(1)Mg10Cr2 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. Both Mg(1)-Mg(2) bond lengths are 3.25 Å. Both Mg(1)-Mg(6) bond lengths are 3.15 Å. There are two shorter (3.25 Å) and two longer (3.27 Å) Mg(1)-Mg(4) bond lengths. All Mg(1)-Mg(5) bond lengths are 3.19 Å. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(7), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Cr2 cuboctahedra, corners with six equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Cr(1)Cs2Mg10 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, and faces with six equivalent Mg(6)CsMg11 cuboctahedra. Both Mg(2)-Mg(7) bond lengths are 3.33 Å. There are two shorter (3.23 Å) and two longer (3.29 Å) Mg(2)-Mg(4) bond lengths. All Mg(2)-Mg(5) bond lengths are 3.13 Å. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Cs(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Cr(1) atoms. There is one shorter (3.20 Å) and one longer (3.29 Å) Mg(3)-Mg(3) bond length. Both Mg(3)-Mg(5) bond lengths are 3.37 Å. Both Mg(3)-Mg(6) bond lengths are 3.43 Å. Both Mg(3)-Mg(7) bond lengths are 3.23 Å. There is one shorter (3.20 Å) and one longer (3.32 Å) Mg(3)-Cr(1) bond length. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), and two equivalent Mg(7) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Cr2 cuboctahedra, corners with four equivalent Cr(1)Cs2Mg10 cuboctahedra, corners with six equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(5)CsMg10Cr cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, and faces with eight equivalent Mg(5)CsMg10Cr cuboctahedra. There is one shorter (3.21 Å) and one longer (3.29 Å) Mg(4)-Mg(4) bond length. Both Mg(4)-Mg(5) bond lengths are 3.14 Å. Both Mg(4)-Mg(6) bond lengths are 3.10 Å. Both Mg(4)-Mg(7) bond lengths are 3.34 Å. In the fifth Mg site, Mg(5) is bonded to one Cs(1), one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Cr(1) atom to form distorted MgCsMg10Cr cuboctahedra that share corners with four equivalent Mg(6)CsMg11 cuboctahedra, corners with ten equivalent Mg(5)CsMg10Cr cuboctahedra, edges with two equivalent Cs(1)Mg10Cr2 cuboctahedra, edges with two equivalent Mg(5)CsMg10Cr cuboctahedra, edges with two equivalent Mg(6)CsMg11 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Cr(1)Cs2Mg10 cuboctahedra,  a faceface with one Cs(1)Mg10Cr2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra,  a faceface with one Cr(1)Cs2Mg10 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. There is one shorter (3.12 Å) and one longer (3.38 Å) Mg(5)-Mg(5) bond length. There is one shorter (3.15 Å) and one longer (3.37 Å) Mg(5)-Mg(6) bond length. There is one shorter (3.24 Å) and one longer (3.30 Å) Mg(5)-Mg(7) bond length. The Mg(5)-Cr(1) bond length is 3.37 Å. In the sixth Mg site, Mg(6) is bonded to one Cs(1), one Mg(1), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(7), and four equivalent Mg(5) atoms to form distorted MgCsMg11 cuboctahedra that share corners with six equivalent Mg(6)CsMg11 cuboctahedra, corners with eight equivalent Mg(5)CsMg10Cr cuboctahedra, edges with two equivalent Cs(1)Mg10Cr2 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(5)CsMg10Cr cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra,  a faceface with one Cs(1)Mg10Cr2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with three equivalent Mg(2)Mg12 cuboctahedra, faces with three equivalent Cr(1)Cs2Mg10 cuboctahedra, and faces with four equivalent Mg(5)CsMg10Cr cuboctahedra. Both Mg(6)-Mg(7) bond lengths are 3.26 Å. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), four equivalent Mg(5), and one Cr(1) atom. The Mg(7)-Cr(1) bond length is 3.21 Å. Cr(1) is bonded to two equivalent Cs(1), two equivalent Mg(7), four equivalent Mg(3), and four equivalent Mg(5) atoms to form CrCs2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Cr(1)Cs2Mg10 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Cs(1)Mg10Cr2 cuboctahedra, edges with eight equivalent Mg(5)CsMg10Cr cuboctahedra, faces with two equivalent Cs(1)Mg10Cr2 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with four equivalent Mg(5)CsMg10Cr cuboctahedra, and faces with six equivalent Mg(6)CsMg11 cuboctahedra.