The compound described by Mg2Ti is beta-derived structured and crystallizes in the monoclinic P2_1/m space group. There are eight inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one Mg(2), one Mg(5), three equivalent Mg(3), three equivalent Mg(8), one Ti(2), one Ti(4), and two equivalent Ti(3) atoms to form distorted MgMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(6)Mg8Ti4 cuboctahedra,  a cornercorner with one Ti(3)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with three equivalent Ti(4)Mg6Ti6 cuboctahedra,  an edgeedge with one Mg(8)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(3)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with two equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with four equivalent Mg(1)Mg8Ti4 cuboctahedra,  a faceface with one Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(5)Mg9Ti3 cuboctahedra, and faces with three equivalent Ti(2)Mg8Ti4 cuboctahedra. In the second Mg site, Mg(2) is bonded to one Mg(1), one Mg(5), one Mg(6), two equivalent Mg(4), three equivalent Mg(7), one Ti(1), one Ti(4), and two equivalent Ti(3) atoms to form distorted MgMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(8)Mg7Ti5 cuboctahedra,  a cornercorner with one Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with three equivalent Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(3)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with four equivalent Ti(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(1)Mg8Ti4 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, and faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra. In the third Mg site, Mg(3) is bonded to one Mg(4), one Mg(8), two equivalent Mg(3), three equivalent Mg(1), three equivalent Mg(5), one Ti(2), and one Ti(3) atom to form MgMg10Ti2 cuboctahedra that share  a cornercorner with one Ti(4)Mg6Ti6 cuboctahedra,  a cornercorner with one Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with three equivalent Ti(3)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(7)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with two equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with five equivalent Ti(4)Mg6Ti6 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with three equivalent Ti(2)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(3)Mg10Ti2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to one Mg(3), one Mg(7), two equivalent Mg(2), two equivalent Mg(5), three equivalent Mg(6), one Ti(1), one Ti(2), and one Ti(3) atom to form MgMg9Ti3 cuboctahedra that share  a cornercorner with one Mg(8)Mg7Ti5 cuboctahedra,  a cornercorner with one Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with three equivalent Ti(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(3)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with two equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with four equivalent Mg(7)Mg7Ti5 cuboctahedra,  a faceface with one Mg(3)Mg10Ti2 cuboctahedra,  a faceface with one Mg(7)Mg7Ti5 cuboctahedra,  a faceface with one Ti(2)Mg8Ti4 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, and faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Mg(1), one Mg(2), one Mg(6), one Mg(8), two equivalent Mg(4), three equivalent Mg(3), one Ti(4), and two equivalent Ti(2) atoms to form distorted MgMg9Ti3 cuboctahedra that share  a cornercorner with one Mg(7)Mg7Ti5 cuboctahedra,  a cornercorner with one Ti(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with three equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with three equivalent Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(4)Mg6Ti6 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(8)Mg7Ti5 cuboctahedra,  a faceface with one Mg(8)Mg7Ti5 cuboctahedra,  a faceface with one Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(6)Mg8Ti4 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, and faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra. In the sixth Mg site, Mg(6) is bonded to one Mg(2), one Mg(5), one Mg(7), two equivalent Mg(6), three equivalent Mg(4), one Ti(4), and three equivalent Ti(1) atoms to form distorted MgMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(1)Mg8Ti4 cuboctahedra,  a cornercorner with one Ti(3)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with three equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with three equivalent Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(8)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with two equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with two equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with five equivalent Ti(3)Mg8Ti4 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(6)Mg8Ti4 cuboctahedra. In the seventh Mg site, Mg(7) is bonded to one Mg(4), one Mg(6), two equivalent Mg(7), three equivalent Mg(2), one Ti(3), one Ti(4), and three equivalent Ti(1) atoms to form MgMg7Ti5 cuboctahedra that share  a cornercorner with one Mg(5)Mg9Ti3 cuboctahedra,  a cornercorner with one Ti(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with three equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra, faces with three equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(3)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(7)Mg7Ti5 cuboctahedra. In the eighth Mg site, Mg(8) is bonded to one Mg(3), one Mg(5), two equivalent Mg(8), three equivalent Mg(1), one Ti(3), one Ti(4), and three equivalent Ti(2) atoms to form MgMg7Ti5 cuboctahedra that share  a cornercorner with one Mg(2)Mg8Ti4 cuboctahedra,  a cornercorner with one Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with three equivalent Ti(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with three equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with three equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(5)Mg9Ti3 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with three equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(3)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(8)Mg7Ti5 cuboctahedra. There are four inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one Mg(2), one Mg(4), three equivalent Mg(6), three equivalent Mg(7), one Ti(2), one Ti(3), and two equivalent Ti(4) atoms to form TiMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(3)Mg10Ti2 cuboctahedra,  a cornercorner with one Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with three equivalent Ti(3)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Mg(7)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(4)Mg6Ti6 cuboctahedra, edges with two equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with four equivalent Ti(1)Mg8Ti4 cuboctahedra,  a faceface with one Ti(2)Mg8Ti4 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, and faces with three equivalent Mg(4)Mg9Ti3 cuboctahedra. In the second Ti site, Ti(2) is bonded to one Mg(1), one Mg(3), one Mg(4), two equivalent Mg(5), three equivalent Mg(8), one Ti(1), one Ti(3), and two equivalent Ti(4) atoms to form TiMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(7)Mg7Ti5 cuboctahedra,  a cornercorner with one Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with three equivalent Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(4)Mg6Ti6 cuboctahedra, edges with two equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Ti(1)Mg8Ti4 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(6)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra, and faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra. In the third Ti site, Ti(3) is bonded to one Mg(3), one Mg(4), one Mg(7), one Mg(8), two equivalent Mg(1), two equivalent Mg(2), one Ti(1), one Ti(2), and two equivalent Ti(4) atoms to form TiMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(1)Mg8Ti4 cuboctahedra,  a cornercorner with one Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with three equivalent Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra, edges with two equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with two equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with three equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with five equivalent Mg(6)Mg8Ti4 cuboctahedra,  a faceface with one Mg(3)Mg10Ti2 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Ti(1)Mg8Ti4 cuboctahedra,  a faceface with one Ti(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, and faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra. In the fourth Ti site, Ti(4) is bonded to one Mg(1), one Mg(2), one Mg(5), one Mg(6), one Mg(7), one Mg(8), two equivalent Ti(1), two equivalent Ti(2), and two equivalent Ti(3) atoms to form TiMg6Ti6 cuboctahedra that share  a cornercorner with one Mg(3)Mg10Ti2 cuboctahedra,  a cornercorner with one Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with five equivalent Mg(3)Mg10Ti2 cuboctahedra,  a faceface with one Mg(1)Mg8Ti4 cuboctahedra,  a faceface with one Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(6)Mg8Ti4 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, and faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra. is represented by the CIF file [CIF]
data_Mg2Ti
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.855
_cell_length_b   8.344
_cell_length_c   12.431
_cell_angle_alpha   79.090
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   494.459
_cell_formula_units_Z   8
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.250  0.282  0.400  1.0
  Mg  Mg1  1  0.250  0.286  0.154  1.0
  Mg  Mg2  1  0.750  0.059  0.428  1.0
  Mg  Mg3  1  0.750  0.056  0.180  1.0
  Mg  Mg4  1  0.750  0.064  0.681  1.0
  Mg  Mg5  1  0.750  0.060  0.930  1.0
  Mg  Mg6  1  0.250  0.941  0.572  1.0
  Mg  Mg7  1  0.250  0.936  0.319  1.0
  Mg  Mg8  1  0.250  0.944  0.820  1.0
  Mg  Mg9  1  0.250  0.940  0.070  1.0
  Mg  Mg10  1  0.750  0.714  0.846  1.0
  Mg  Mg11  1  0.750  0.718  0.600  1.0
  Mg  Mg12  1  0.250  0.611  0.988  1.0
  Mg  Mg13  1  0.250  0.610  0.485  1.0
  Mg  Mg14  1  0.750  0.389  0.012  1.0
  Mg  Mg15  1  0.750  0.390  0.515  1.0
  Ti  Ti16  1  0.250  0.289  0.882  1.0
  Ti  Ti17  1  0.250  0.290  0.671  1.0
  Ti  Ti18  1  0.750  0.711  0.118  1.0
  Ti  Ti19  1  0.750  0.710  0.329  1.0
  Ti  Ti20  1  0.250  0.578  0.740  1.0
  Ti  Ti21  1  0.250  0.613  0.237  1.0
  Ti  Ti22  1  0.750  0.422  0.260  1.0
  Ti  Ti23  1  0.750  0.387  0.763  1.0
[/CIF]
.
The compound described by Mg2Ti is beta-derived structured and crystallizes in the monoclinic P2_1/m space group. There are eight inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one Mg(2), one Mg(5), three equivalent Mg(3), three equivalent Mg(8), one Ti(2), one Ti(4), and two equivalent Ti(3) atoms to form distorted MgMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(6)Mg8Ti4 cuboctahedra,  a cornercorner with one Ti(3)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with three equivalent Ti(4)Mg6Ti6 cuboctahedra,  an edgeedge with one Mg(8)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(3)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with two equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with four equivalent Mg(1)Mg8Ti4 cuboctahedra,  a faceface with one Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(5)Mg9Ti3 cuboctahedra, and faces with three equivalent Ti(2)Mg8Ti4 cuboctahedra. In the second Mg site, Mg(2) is bonded to one Mg(1), one Mg(5), one Mg(6), two equivalent Mg(4), three equivalent Mg(7), one Ti(1), one Ti(4), and two equivalent Ti(3) atoms to form distorted MgMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(8)Mg7Ti5 cuboctahedra,  a cornercorner with one Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with three equivalent Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(3)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with four equivalent Ti(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(1)Mg8Ti4 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, and faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra. In the third Mg site, Mg(3) is bonded to one Mg(4), one Mg(8), two equivalent Mg(3), three equivalent Mg(1), three equivalent Mg(5), one Ti(2), and one Ti(3) atom to form MgMg10Ti2 cuboctahedra that share  a cornercorner with one Ti(4)Mg6Ti6 cuboctahedra,  a cornercorner with one Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with three equivalent Ti(3)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(7)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with two equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with five equivalent Ti(4)Mg6Ti6 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with three equivalent Ti(2)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(3)Mg10Ti2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to one Mg(3), one Mg(7), two equivalent Mg(2), two equivalent Mg(5), three equivalent Mg(6), one Ti(1), one Ti(2), and one Ti(3) atom to form MgMg9Ti3 cuboctahedra that share  a cornercorner with one Mg(8)Mg7Ti5 cuboctahedra,  a cornercorner with one Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with three equivalent Ti(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(3)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with two equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with four equivalent Mg(7)Mg7Ti5 cuboctahedra,  a faceface with one Mg(3)Mg10Ti2 cuboctahedra,  a faceface with one Mg(7)Mg7Ti5 cuboctahedra,  a faceface with one Ti(2)Mg8Ti4 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, and faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Mg(1), one Mg(2), one Mg(6), one Mg(8), two equivalent Mg(4), three equivalent Mg(3), one Ti(4), and two equivalent Ti(2) atoms to form distorted MgMg9Ti3 cuboctahedra that share  a cornercorner with one Mg(7)Mg7Ti5 cuboctahedra,  a cornercorner with one Ti(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with three equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with three equivalent Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(4)Mg6Ti6 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(8)Mg7Ti5 cuboctahedra,  a faceface with one Mg(8)Mg7Ti5 cuboctahedra,  a faceface with one Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(6)Mg8Ti4 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, and faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra. In the sixth Mg site, Mg(6) is bonded to one Mg(2), one Mg(5), one Mg(7), two equivalent Mg(6), three equivalent Mg(4), one Ti(4), and three equivalent Ti(1) atoms to form distorted MgMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(1)Mg8Ti4 cuboctahedra,  a cornercorner with one Ti(3)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with three equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with three equivalent Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(8)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with two equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with two equivalent Ti(4)Mg6Ti6 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with five equivalent Ti(3)Mg8Ti4 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra,  a faceface with one Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(6)Mg8Ti4 cuboctahedra. In the seventh Mg site, Mg(7) is bonded to one Mg(4), one Mg(6), two equivalent Mg(7), three equivalent Mg(2), one Ti(3), one Ti(4), and three equivalent Ti(1) atoms to form MgMg7Ti5 cuboctahedra that share  a cornercorner with one Mg(5)Mg9Ti3 cuboctahedra,  a cornercorner with one Ti(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with three equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra, faces with three equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with three equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(3)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(7)Mg7Ti5 cuboctahedra. In the eighth Mg site, Mg(8) is bonded to one Mg(3), one Mg(5), two equivalent Mg(8), three equivalent Mg(1), one Ti(3), one Ti(4), and three equivalent Ti(2) atoms to form MgMg7Ti5 cuboctahedra that share  a cornercorner with one Mg(2)Mg8Ti4 cuboctahedra,  a cornercorner with one Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with three equivalent Ti(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with three equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with three equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(5)Mg9Ti3 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with three equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with three equivalent Ti(3)Mg8Ti4 cuboctahedra, and faces with four equivalent Mg(8)Mg7Ti5 cuboctahedra. There are four inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one Mg(2), one Mg(4), three equivalent Mg(6), three equivalent Mg(7), one Ti(2), one Ti(3), and two equivalent Ti(4) atoms to form TiMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(3)Mg10Ti2 cuboctahedra,  a cornercorner with one Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(6)Mg8Ti4 cuboctahedra, corners with three equivalent Ti(3)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Mg(7)Mg7Ti5 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(4)Mg6Ti6 cuboctahedra, edges with two equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(8)Mg7Ti5 cuboctahedra, edges with four equivalent Ti(1)Mg8Ti4 cuboctahedra,  a faceface with one Ti(2)Mg8Ti4 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, faces with three equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(6)Mg8Ti4 cuboctahedra, and faces with three equivalent Mg(4)Mg9Ti3 cuboctahedra. In the second Ti site, Ti(2) is bonded to one Mg(1), one Mg(3), one Mg(4), two equivalent Mg(5), three equivalent Mg(8), one Ti(1), one Ti(3), and two equivalent Ti(4) atoms to form TiMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(7)Mg7Ti5 cuboctahedra,  a cornercorner with one Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with two equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with three equivalent Mg(4)Mg9Ti3 cuboctahedra,  an edgeedge with one Mg(3)Mg10Ti2 cuboctahedra,  an edgeedge with one Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(4)Mg6Ti6 cuboctahedra, edges with two equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with two equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(7)Mg7Ti5 cuboctahedra, edges with three equivalent Ti(3)Mg8Ti4 cuboctahedra, edges with four equivalent Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Ti(1)Mg8Ti4 cuboctahedra,  a faceface with one Ti(3)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(6)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(3)Mg10Ti2 cuboctahedra, faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra, and faces with three equivalent Mg(1)Mg8Ti4 cuboctahedra. In the third Ti site, Ti(3) is bonded to one Mg(3), one Mg(4), one Mg(7), one Mg(8), two equivalent Mg(1), two equivalent Mg(2), one Ti(1), one Ti(2), and two equivalent Ti(4) atoms to form TiMg8Ti4 cuboctahedra that share  a cornercorner with one Mg(1)Mg8Ti4 cuboctahedra,  a cornercorner with one Mg(6)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(4)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(4)Mg6Ti6 cuboctahedra, corners with two equivalent Ti(2)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(3)Mg10Ti2 cuboctahedra, corners with three equivalent Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(2)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(4)Mg9Ti3 cuboctahedra, edges with two equivalent Mg(3)Mg10Ti2 cuboctahedra, edges with two equivalent Ti(1)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(5)Mg9Ti3 cuboctahedra, edges with three equivalent Ti(2)Mg8Ti4 cuboctahedra, edges with five equivalent Mg(6)Mg8Ti4 cuboctahedra,  a faceface with one Mg(3)Mg10Ti2 cuboctahedra,  a faceface with one Mg(4)Mg9Ti3 cuboctahedra,  a faceface with one Ti(1)Mg8Ti4 cuboctahedra,  a faceface with one Ti(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(1)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(2)Mg8Ti4 cuboctahedra, faces with two equivalent Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, and faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra. In the fourth Ti site, Ti(4) is bonded to one Mg(1), one Mg(2), one Mg(5), one Mg(6), one Mg(7), one Mg(8), two equivalent Ti(1), two equivalent Ti(2), and two equivalent Ti(3) atoms to form TiMg6Ti6 cuboctahedra that share  a cornercorner with one Mg(3)Mg10Ti2 cuboctahedra,  a cornercorner with one Ti(1)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(7)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(8)Mg7Ti5 cuboctahedra, corners with two equivalent Mg(2)Mg8Ti4 cuboctahedra, corners with two equivalent Mg(5)Mg9Ti3 cuboctahedra, corners with two equivalent Ti(3)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(1)Mg8Ti4 cuboctahedra, corners with three equivalent Mg(6)Mg8Ti4 cuboctahedra,  an edgeedge with one Mg(5)Mg9Ti3 cuboctahedra,  an edgeedge with one Ti(1)Mg8Ti4 cuboctahedra,  an edgeedge with one Ti(2)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(1)Mg8Ti4 cuboctahedra, edges with two equivalent Mg(6)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(2)Mg8Ti4 cuboctahedra, edges with three equivalent Mg(4)Mg9Ti3 cuboctahedra, edges with five equivalent Mg(3)Mg10Ti2 cuboctahedra,  a faceface with one Mg(1)Mg8Ti4 cuboctahedra,  a faceface with one Mg(2)Mg8Ti4 cuboctahedra,  a faceface with one Mg(6)Mg8Ti4 cuboctahedra,  a faceface with one Mg(5)Mg9Ti3 cuboctahedra, faces with two equivalent Mg(4)Mg9Ti3 cuboctahedra, faces with two equivalent Ti(4)Mg6Ti6 cuboctahedra, faces with two equivalent Ti(1)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(2)Mg8Ti4 cuboctahedra, faces with two equivalent Ti(3)Mg8Ti4 cuboctahedra, faces with three equivalent Mg(7)Mg7Ti5 cuboctahedra, and faces with three equivalent Mg(8)Mg7Ti5 cuboctahedra. is represented by the CIF file [CIF]
data_Mg2Ti
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.855
_cell_length_b   8.344
_cell_length_c   12.431
_cell_angle_alpha   79.090
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   494.459
_cell_formula_units_Z   8
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.250  0.282  0.400  1.0
  Mg  Mg1  1  0.250  0.286  0.154  1.0
  Mg  Mg2  1  0.750  0.059  0.428  1.0
  Mg  Mg3  1  0.750  0.056  0.180  1.0
  Mg  Mg4  1  0.750  0.064  0.681  1.0
  Mg  Mg5  1  0.750  0.060  0.930  1.0
  Mg  Mg6  1  0.250  0.941  0.572  1.0
  Mg  Mg7  1  0.250  0.936  0.319  1.0
  Mg  Mg8  1  0.250  0.944  0.820  1.0
  Mg  Mg9  1  0.250  0.940  0.070  1.0
  Mg  Mg10  1  0.750  0.714  0.846  1.0
  Mg  Mg11  1  0.750  0.718  0.600  1.0
  Mg  Mg12  1  0.250  0.611  0.988  1.0
  Mg  Mg13  1  0.250  0.610  0.485  1.0
  Mg  Mg14  1  0.750  0.389  0.012  1.0
  Mg  Mg15  1  0.750  0.390  0.515  1.0
  Ti  Ti16  1  0.250  0.289  0.882  1.0
  Ti  Ti17  1  0.250  0.290  0.671  1.0
  Ti  Ti18  1  0.750  0.711  0.118  1.0
  Ti  Ti19  1  0.750  0.710  0.329  1.0
  Ti  Ti20  1  0.250  0.578  0.740  1.0
  Ti  Ti21  1  0.250  0.613  0.237  1.0
  Ti  Ti22  1  0.750  0.422  0.260  1.0
  Ti  Ti23  1  0.750  0.387  0.763  1.0
[/CIF]
.