The material described by Mg14CuBi crystallizes in the orthorhombic Amm2 space group. There are eight inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2); two equivalent Mg(6); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Bi(1)Mg10Cu2 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(6)Mg11Cu cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Cu(1)Mg10Bi2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(7)Mg11Bi cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1); two equivalent Mg(7); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cu(1)Mg10Bi2 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(7)Mg11Bi cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Bi(1)Mg10Cu2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(6)Mg11Cu cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), two equivalent Cu(1), and two equivalent Bi(1) atoms to form distorted MgMg6Cu2Bi2 cuboctahedra that share corners with two equivalent Mg(7)Mg11Bi cuboctahedra, corners with two equivalent Mg(6)Mg11Cu cuboctahedra, corners with two equivalent Cu(1)Mg10Bi2 cuboctahedra, corners with two equivalent Bi(1)Mg10Cu2 cuboctahedra, corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with four equivalent Mg(2)Mg12 cuboctahedra, corners with four equivalent Mg(4)Mg12 cuboctahedra, corners with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, edges with two equivalent Mg(7)Mg11Bi cuboctahedra, edges with two equivalent Mg(6)Mg11Cu cuboctahedra, edges with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, edges with four equivalent Mg(5)Mg10CuBi cuboctahedra, faces with two equivalent Mg(7)Mg11Bi cuboctahedra, faces with two equivalent Mg(6)Mg11Cu cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, faces with two equivalent Cu(1)Mg10Bi2 cuboctahedra, faces with two equivalent Bi(1)Mg10Cu2 cuboctahedra, and faces with eight equivalent Mg(5)Mg10CuBi cuboctahedra. 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 Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with four equivalent Cu(1)Mg10Bi2 cuboctahedra; corners with four equivalent Bi(1)Mg10Cu2 cuboctahedra; corners with six Mg(4,4)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)Mg10CuBi cuboctahedra; edges with four equivalent Mg(7)Mg11Bi cuboctahedra; edges with four equivalent Mg(6)Mg11Cu cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu 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; faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; and faces with eight equivalent Mg(5)Mg10CuBi cuboctahedra. In the fifth 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 Mg(3)Mg6Cu2Bi2 cuboctahedra, corners with four equivalent Cu(1)Mg10Bi2 cuboctahedra, corners with four equivalent Bi(1)Mg10Cu2 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)Mg10CuBi cuboctahedra, edges with four equivalent Mg(7)Mg11Bi cuboctahedra, edges with four equivalent Mg(6)Mg11Cu cuboctahedra, faces with two equivalent Mg(7)Mg11Bi cuboctahedra, faces with two equivalent Mg(6)Mg11Cu 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, faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, and faces with eight equivalent Mg(5)Mg10CuBi cuboctahedra. In the sixth Mg site, Mg(5) is bonded to one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), one Cu(1), and one Bi(1) atom to form distorted MgMg10CuBi cuboctahedra that share corners with four equivalent Mg(7)Mg11Bi cuboctahedra; corners with four equivalent Mg(6)Mg11Cu cuboctahedra; corners with ten equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(7)Mg11Bi cuboctahedra; edges with two equivalent Mg(6)Mg11Cu 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 Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Cu(1)Mg10Bi2 cuboctahedra; edges with two equivalent Bi(1)Mg10Cu2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Cu(1)Mg10Bi2 cuboctahedra;  a faceface with one Bi(1)Mg10Cu2 cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra. In the seventh Mg site, Mg(6) is bonded to one Mg(1); two equivalent Mg(3); two Mg(4,4); two equivalent Mg(7); four equivalent Mg(5); and one Cu(1) atom to form distorted MgMg11Cu cuboctahedra that share corners with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with four equivalent Mg(7)Mg11Bi cuboctahedra; corners with six equivalent Mg(6)Mg11Cu cuboctahedra; corners with eight equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(7)Mg11Bi cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Cu(1)Mg10Bi2 cuboctahedra; edges with four equivalent Mg(5)Mg10CuBi cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Cu(1)Mg10Bi2 cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; faces with three equivalent Bi(1)Mg10Cu2 cuboctahedra; and faces with four equivalent Mg(5)Mg10CuBi cuboctahedra. In the eighth Mg site, Mg(7) is bonded to one Mg(2); two equivalent Mg(3); two Mg(4,4); two equivalent Mg(6); four equivalent Mg(5); and one Bi(1) atom to form distorted MgMg11Bi cuboctahedra that share corners with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with four equivalent Mg(6)Mg11Cu cuboctahedra; corners with six equivalent Mg(7)Mg11Bi cuboctahedra; corners with eight equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(6)Mg11Cu cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Bi(1)Mg10Cu2 cuboctahedra; edges with four equivalent Mg(5)Mg10CuBi cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Bi(1)Mg10Cu2 cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; faces with three equivalent Mg(1)Mg12 cuboctahedra; faces with three equivalent Cu(1)Mg10Bi2 cuboctahedra; and faces with four equivalent Mg(5)Mg10CuBi cuboctahedra. Cu(1) is bonded to two equivalent Mg(6), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Bi(1) atoms to form CuMg10Bi2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with six equivalent Cu(1)Mg10Bi2 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Bi(1)Mg10Cu2 cuboctahedra; edges with four equivalent Mg(6)Mg11Cu cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Bi(1)Mg10Cu2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; and faces with six equivalent Mg(7)Mg11Bi cuboctahedra. Bi(1) is bonded to two equivalent Mg(7), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Cu(1) atoms to form BiMg10Cu2 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with six equivalent Bi(1)Mg10Cu2 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Cu(1)Mg10Bi2 cuboctahedra; edges with four equivalent Mg(7)Mg11Bi cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Cu(1)Mg10Bi2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; and faces with six equivalent Mg(6)Mg11Cu cuboctahedra. is represented by the CIF file [CIF]
data_Mg14CuBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.319
_cell_length_b   6.312
_cell_length_c   10.401
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.961
_symmetry_Int_Tables_number   1
_cell_volume   359.427
_cell_formula_units_Z   1
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  0.167  0.334  0.625  1.0
  Mg  Mg1  1  0.168  0.834  0.625  1.0
  Mg  Mg2  1  0.668  0.335  0.125  1.0
  Mg  Mg3  1  0.665  0.332  0.625  1.0
  Mg  Mg4  1  0.668  0.833  0.125  1.0
  Mg  Mg5  1  0.665  0.833  0.625  1.0
  Mg  Mg6  1  0.333  0.173  0.373  1.0
  Mg  Mg7  1  0.333  0.173  0.877  1.0
  Mg  Mg8  1  0.333  0.660  0.373  1.0
  Mg  Mg9  1  0.333  0.660  0.877  1.0
  Mg  Mg10  1  0.839  0.169  0.371  1.0
  Mg  Mg11  1  0.839  0.169  0.879  1.0
  Mg  Mg12  1  0.829  0.665  0.382  1.0
  Mg  Mg13  1  0.829  0.665  0.868  1.0
  Cu  Cu14  1  0.167  0.333  0.125  1.0
  Bi  Bi15  1  0.164  0.832  0.125  1.0
[/CIF]
.
The material described by Mg14CuBi crystallizes in the orthorhombic Amm2 space group. There are eight inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2); two equivalent Mg(6); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Bi(1)Mg10Cu2 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(6)Mg11Cu cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Cu(1)Mg10Bi2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(7)Mg11Bi cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1); two equivalent Mg(7); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cu(1)Mg10Bi2 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(7)Mg11Bi cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Bi(1)Mg10Cu2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(6)Mg11Cu cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), two equivalent Cu(1), and two equivalent Bi(1) atoms to form distorted MgMg6Cu2Bi2 cuboctahedra that share corners with two equivalent Mg(7)Mg11Bi cuboctahedra, corners with two equivalent Mg(6)Mg11Cu cuboctahedra, corners with two equivalent Cu(1)Mg10Bi2 cuboctahedra, corners with two equivalent Bi(1)Mg10Cu2 cuboctahedra, corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with four equivalent Mg(2)Mg12 cuboctahedra, corners with four equivalent Mg(4)Mg12 cuboctahedra, corners with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, edges with two equivalent Mg(7)Mg11Bi cuboctahedra, edges with two equivalent Mg(6)Mg11Cu cuboctahedra, edges with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, edges with four equivalent Mg(5)Mg10CuBi cuboctahedra, faces with two equivalent Mg(7)Mg11Bi cuboctahedra, faces with two equivalent Mg(6)Mg11Cu cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, faces with two equivalent Cu(1)Mg10Bi2 cuboctahedra, faces with two equivalent Bi(1)Mg10Cu2 cuboctahedra, and faces with eight equivalent Mg(5)Mg10CuBi cuboctahedra. 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 Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with four equivalent Cu(1)Mg10Bi2 cuboctahedra; corners with four equivalent Bi(1)Mg10Cu2 cuboctahedra; corners with six Mg(4,4)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)Mg10CuBi cuboctahedra; edges with four equivalent Mg(7)Mg11Bi cuboctahedra; edges with four equivalent Mg(6)Mg11Cu cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu 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; faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; and faces with eight equivalent Mg(5)Mg10CuBi cuboctahedra. In the fifth 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 Mg(3)Mg6Cu2Bi2 cuboctahedra, corners with four equivalent Cu(1)Mg10Bi2 cuboctahedra, corners with four equivalent Bi(1)Mg10Cu2 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)Mg10CuBi cuboctahedra, edges with four equivalent Mg(7)Mg11Bi cuboctahedra, edges with four equivalent Mg(6)Mg11Cu cuboctahedra, faces with two equivalent Mg(7)Mg11Bi cuboctahedra, faces with two equivalent Mg(6)Mg11Cu 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, faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra, and faces with eight equivalent Mg(5)Mg10CuBi cuboctahedra. In the sixth Mg site, Mg(5) is bonded to one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), one Cu(1), and one Bi(1) atom to form distorted MgMg10CuBi cuboctahedra that share corners with four equivalent Mg(7)Mg11Bi cuboctahedra; corners with four equivalent Mg(6)Mg11Cu cuboctahedra; corners with ten equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(7)Mg11Bi cuboctahedra; edges with two equivalent Mg(6)Mg11Cu 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 Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Cu(1)Mg10Bi2 cuboctahedra; edges with two equivalent Bi(1)Mg10Cu2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Cu(1)Mg10Bi2 cuboctahedra;  a faceface with one Bi(1)Mg10Cu2 cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra. In the seventh Mg site, Mg(6) is bonded to one Mg(1); two equivalent Mg(3); two Mg(4,4); two equivalent Mg(7); four equivalent Mg(5); and one Cu(1) atom to form distorted MgMg11Cu cuboctahedra that share corners with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with four equivalent Mg(7)Mg11Bi cuboctahedra; corners with six equivalent Mg(6)Mg11Cu cuboctahedra; corners with eight equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(7)Mg11Bi cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Cu(1)Mg10Bi2 cuboctahedra; edges with four equivalent Mg(5)Mg10CuBi cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Cu(1)Mg10Bi2 cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; faces with three equivalent Bi(1)Mg10Cu2 cuboctahedra; and faces with four equivalent Mg(5)Mg10CuBi cuboctahedra. In the eighth Mg site, Mg(7) is bonded to one Mg(2); two equivalent Mg(3); two Mg(4,4); two equivalent Mg(6); four equivalent Mg(5); and one Bi(1) atom to form distorted MgMg11Bi cuboctahedra that share corners with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with four equivalent Mg(6)Mg11Cu cuboctahedra; corners with six equivalent Mg(7)Mg11Bi cuboctahedra; corners with eight equivalent Mg(5)Mg10CuBi cuboctahedra; edges with two equivalent Mg(6)Mg11Cu cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; edges with two equivalent Bi(1)Mg10Cu2 cuboctahedra; edges with four equivalent Mg(5)Mg10CuBi cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Bi(1)Mg10Cu2 cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; faces with three equivalent Mg(1)Mg12 cuboctahedra; faces with three equivalent Cu(1)Mg10Bi2 cuboctahedra; and faces with four equivalent Mg(5)Mg10CuBi cuboctahedra. Cu(1) is bonded to two equivalent Mg(6), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Bi(1) atoms to form CuMg10Bi2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with six equivalent Cu(1)Mg10Bi2 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Bi(1)Mg10Cu2 cuboctahedra; edges with four equivalent Mg(6)Mg11Cu cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(6)Mg11Cu cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Bi(1)Mg10Cu2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; and faces with six equivalent Mg(7)Mg11Bi cuboctahedra. Bi(1) is bonded to two equivalent Mg(7), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Cu(1) atoms to form BiMg10Cu2 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; corners with six equivalent Bi(1)Mg10Cu2 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Cu(1)Mg10Bi2 cuboctahedra; edges with four equivalent Mg(7)Mg11Bi cuboctahedra; edges with eight equivalent Mg(5)Mg10CuBi cuboctahedra; faces with two equivalent Mg(7)Mg11Bi cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Cu(1)Mg10Bi2 cuboctahedra; faces with four equivalent Mg(5)Mg10CuBi cuboctahedra; faces with four equivalent Mg(3)Mg6Cu2Bi2 cuboctahedra; and faces with six equivalent Mg(6)Mg11Cu cuboctahedra. is represented by the CIF file [CIF]
data_Mg14CuBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.319
_cell_length_b   6.312
_cell_length_c   10.401
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.961
_symmetry_Int_Tables_number   1
_cell_volume   359.427
_cell_formula_units_Z   1
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  0.167  0.334  0.625  1.0
  Mg  Mg1  1  0.168  0.834  0.625  1.0
  Mg  Mg2  1  0.668  0.335  0.125  1.0
  Mg  Mg3  1  0.665  0.332  0.625  1.0
  Mg  Mg4  1  0.668  0.833  0.125  1.0
  Mg  Mg5  1  0.665  0.833  0.625  1.0
  Mg  Mg6  1  0.333  0.173  0.373  1.0
  Mg  Mg7  1  0.333  0.173  0.877  1.0
  Mg  Mg8  1  0.333  0.660  0.373  1.0
  Mg  Mg9  1  0.333  0.660  0.877  1.0
  Mg  Mg10  1  0.839  0.169  0.371  1.0
  Mg  Mg11  1  0.839  0.169  0.879  1.0
  Mg  Mg12  1  0.829  0.665  0.382  1.0
  Mg  Mg13  1  0.829  0.665  0.868  1.0
  Cu  Cu14  1  0.167  0.333  0.125  1.0
  Bi  Bi15  1  0.164  0.832  0.125  1.0
[/CIF]
.