NaMg14Ti crystallizes in the hexagonal P-6m2 space group. Na(1) is bonded to six equivalent Mg(2) and six equivalent Mg(3) atoms to form NaMg12 cuboctahedra that share corners with six equivalent Na(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with six equivalent Mg(2)Na2Mg10 cuboctahedra, edges with twelve equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Ti(1)Mg12 cuboctahedra, faces with six equivalent Mg(4)Mg12 cuboctahedra, faces with six equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ti(1) atoms to form MgMg10Ti2 cuboctahedra that share corners with four equivalent Na(1)Mg12 cuboctahedra, corners with six equivalent Mg(1)Mg10Ti2 cuboctahedra, corners with eight equivalent Mg(2)Na2Mg10 cuboctahedra, edges with two equivalent Ti(1)Mg12 cuboctahedra, edges with four equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(2)Na2Mg10 cuboctahedra, faces with two equivalent Ti(1)Mg12 cuboctahedra, faces with four equivalent Mg(1)Mg10Ti2 cuboctahedra, and faces with ten equivalent Mg(3)NaMg10Ti cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(2), and four equivalent Mg(3) atoms to form distorted MgNa2Mg10 cuboctahedra that share corners with four equivalent Ti(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Na2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with two equivalent Na(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(2)Na2Mg10 cuboctahedra, edges with eight equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Na(1)Mg12 cuboctahedra, faces with two equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with four equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with ten equivalent Mg(3)NaMg10Ti cuboctahedra. In the third Mg site, Mg(3) is bonded to one Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(3), and one Ti(1) atom to form distorted MgNaMg10Ti cuboctahedra that share corners with four equivalent Mg(4)Mg12 cuboctahedra, corners with fourteen equivalent Mg(3)NaMg10Ti cuboctahedra, edges with two equivalent Na(1)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Ti(1)Mg12 cuboctahedra, edges with four equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with four equivalent Mg(2)Na2Mg10 cuboctahedra, edges with four equivalent Mg(3)NaMg10Ti cuboctahedra,  a faceface with one Na(1)Mg12 cuboctahedra,  a faceface with one Ti(1)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with five equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with five equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra. In the fourth Mg site, Mg(4) is bonded to three equivalent Mg(1), three equivalent Mg(2), and six equivalent Mg(3) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(4)Mg12 cuboctahedra, corners with twelve equivalent Mg(3)NaMg10Ti cuboctahedra, edges with six equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with six equivalent Mg(2)Na2Mg10 cuboctahedra, edges with six equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with three equivalent Na(1)Mg12 cuboctahedra, faces with three equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(2)Na2Mg10 cuboctahedra, faces with three equivalent Ti(1)Mg12 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra. Ti(1) is bonded to six equivalent Mg(1) and six equivalent Mg(3) atoms to form TiMg12 cuboctahedra that share corners with six equivalent Ti(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(2)Na2Mg10 cuboctahedra, edges with six equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with twelve equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Na(1)Mg12 cuboctahedra, faces with six equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with six equivalent Mg(4)Mg12 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra.
NaMg14Ti crystallizes in the hexagonal P-6m2 space group. Na(1) is bonded to six equivalent Mg(2) and six equivalent Mg(3) atoms to form NaMg12 cuboctahedra that share corners with six equivalent Na(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with six equivalent Mg(2)Na2Mg10 cuboctahedra, edges with twelve equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Ti(1)Mg12 cuboctahedra, faces with six equivalent Mg(4)Mg12 cuboctahedra, faces with six equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra. All Na(1)-Mg(2) bond lengths are 3.22 Å. All Na(1)-Mg(3) bond lengths are 3.20 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ti(1) atoms to form MgMg10Ti2 cuboctahedra that share corners with four equivalent Na(1)Mg12 cuboctahedra, corners with six equivalent Mg(1)Mg10Ti2 cuboctahedra, corners with eight equivalent Mg(2)Na2Mg10 cuboctahedra, edges with two equivalent Ti(1)Mg12 cuboctahedra, edges with four equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(2)Na2Mg10 cuboctahedra, faces with two equivalent Ti(1)Mg12 cuboctahedra, faces with four equivalent Mg(1)Mg10Ti2 cuboctahedra, and faces with ten equivalent Mg(3)NaMg10Ti cuboctahedra. Both Mg(1)-Mg(4) bond lengths are 3.17 Å. There are two shorter (3.19 Å) and two longer (3.25 Å) Mg(1)-Mg(1) bond lengths. All Mg(1)-Mg(3) bond lengths are 3.10 Å. Both Mg(1)-Ti(1) bond lengths are 3.22 Å. In the second Mg site, Mg(2) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(2), and four equivalent Mg(3) atoms to form distorted MgNa2Mg10 cuboctahedra that share corners with four equivalent Ti(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Na2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with two equivalent Na(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(2)Na2Mg10 cuboctahedra, edges with eight equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Na(1)Mg12 cuboctahedra, faces with two equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with four equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with ten equivalent Mg(3)NaMg10Ti cuboctahedra. Both Mg(2)-Mg(4) bond lengths are 3.16 Å. There are two shorter (3.19 Å) and two longer (3.24 Å) Mg(2)-Mg(2) bond lengths. All Mg(2)-Mg(3) bond lengths are 3.21 Å. In the third Mg site, Mg(3) is bonded to one Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(3), and one Ti(1) atom to form distorted MgNaMg10Ti cuboctahedra that share corners with four equivalent Mg(4)Mg12 cuboctahedra, corners with fourteen equivalent Mg(3)NaMg10Ti cuboctahedra, edges with two equivalent Na(1)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Ti(1)Mg12 cuboctahedra, edges with four equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with four equivalent Mg(2)Na2Mg10 cuboctahedra, edges with four equivalent Mg(3)NaMg10Ti cuboctahedra,  a faceface with one Na(1)Mg12 cuboctahedra,  a faceface with one Ti(1)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with five equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with five equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra. Both Mg(3)-Mg(4) bond lengths are 3.22 Å. There are two shorter (3.19 Å) and two longer (3.25 Å) Mg(3)-Mg(3) bond lengths. The Mg(3)-Ti(1) bond length is 3.09 Å. In the fourth Mg site, Mg(4) is bonded to three equivalent Mg(1), three equivalent Mg(2), and six equivalent Mg(3) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(4)Mg12 cuboctahedra, corners with twelve equivalent Mg(3)NaMg10Ti cuboctahedra, edges with six equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with six equivalent Mg(2)Na2Mg10 cuboctahedra, edges with six equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with three equivalent Na(1)Mg12 cuboctahedra, faces with three equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(2)Na2Mg10 cuboctahedra, faces with three equivalent Ti(1)Mg12 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra. Ti(1) is bonded to six equivalent Mg(1) and six equivalent Mg(3) atoms to form TiMg12 cuboctahedra that share corners with six equivalent Ti(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(2)Na2Mg10 cuboctahedra, edges with six equivalent Mg(1)Mg10Ti2 cuboctahedra, edges with twelve equivalent Mg(3)NaMg10Ti cuboctahedra, faces with two equivalent Na(1)Mg12 cuboctahedra, faces with six equivalent Mg(1)Mg10Ti2 cuboctahedra, faces with six equivalent Mg(4)Mg12 cuboctahedra, and faces with six equivalent Mg(3)NaMg10Ti cuboctahedra.