The compound described by Li(Mg4Al3)4 is gamma-brass-derived structured and crystallizes in the monoclinic Cm space group. Li(1) is bonded in a 12-coordinate geometry to one Mg(2), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(9), one Al(2), two equivalent Al(3), and two equivalent Al(4) atoms. There are ten inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to one Mg(4), two equivalent Mg(10), two equivalent Mg(5), two equivalent Mg(7), one Al(1), two equivalent Al(3), and two equivalent Al(5) atoms. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to one Li(1), one Mg(3), two equivalent Mg(7), two equivalent Al(3), two equivalent Al(5), and two equivalent Al(6) atoms. In the third Mg site, Mg(3) is bonded in a 16-coordinate geometry to one Mg(2), one Mg(4), two equivalent Mg(8), one Al(1), one Al(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(6), and two equivalent Al(7) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to one Mg(1), one Mg(3), two equivalent Mg(6), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(7) atoms. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Li(1), one Mg(1), one Mg(10), one Mg(6), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(2), one Al(3), one Al(6), and one Al(7) atom. In the sixth Mg site, Mg(6) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(4), one Mg(5), one Mg(7), two equivalent Mg(9), one Al(2), one Al(4), one Al(5), one Al(6), and one Al(7) atom. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Mg(1), one Mg(2), one Mg(5), one Mg(6), one Mg(9), two equivalent Mg(10), one Al(1), one Al(4), one Al(5), one Al(6), and one Al(7) atom. In the eighth Mg site, Mg(8) is bonded in a 10-coordinate geometry to one Mg(10), one Mg(3), one Mg(5), one Mg(9), one Al(1), one Al(2), one Al(4), one Al(5), one Al(6), and one Al(7) atom. In the ninth Mg site, Mg(9) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(5), one Mg(7), one Mg(8), two equivalent Mg(6), one Al(3), one Al(4), one Al(5), and two equivalent Al(6) atoms. In the tenth Mg site, Mg(10) is bonded in a 12-coordinate geometry to one Mg(1), one Mg(5), one Mg(6), one Mg(8), one Mg(9), two equivalent Mg(7), one Al(3), one Al(4), one Al(5), and two equivalent Al(7) atoms. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted q6 geometry to one Mg(1), one Mg(3), two equivalent Mg(5), two equivalent Mg(7), two equivalent Mg(8), one Al(2), and two equivalent Al(4) atoms. In the second Al site, Al(3) is bonded in a 11-coordinate geometry to one Li(1), one Mg(1), one Mg(10), one Mg(2), one Mg(3), one Mg(4), one Mg(5), one Mg(9), one Al(3), one Al(6), and one Al(7) atom. In the third Al site, Al(4) is bonded in a 11-coordinate geometry to one Li(1), one Mg(10), one Mg(3), one Mg(4), one Mg(6), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(4), and one Al(7) atom. In the fourth Al site, Al(5) is bonded in a 11-coordinate geometry to one Mg(1), one Mg(10), one Mg(2), one Mg(3), one Mg(6), one Mg(7), one Mg(8), one Mg(9), one Al(2), one Al(5), and one Al(6) atom. In the fifth Al site, Al(6) is bonded in a 11-coordinate geometry to one Mg(2), one Mg(3), one Mg(5), one Mg(6), one Mg(7), one Mg(8), two equivalent Mg(9), one Al(3), one Al(5), and one Al(7) atom. In the sixth Al site, Al(2) is bonded in a 11-coordinate geometry to one Li(1), one Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(8), one Al(1), and two equivalent Al(5) atoms. In the seventh Al site, Al(7) is bonded in a 11-coordinate geometry to one Mg(3), one Mg(4), one Mg(5), one Mg(6), one Mg(7), one Mg(8), two equivalent Mg(10), one Al(3), one Al(4), and one Al(6) atom. is represented by the CIF file [CIF]
data_Li(Mg4Al3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.078
_cell_length_b   9.078
_cell_length_c   9.116
_cell_angle_alpha   70.563
_cell_angle_beta   70.563
_cell_angle_gamma   109.168
_symmetry_Int_Tables_number   1
_cell_volume   580.971
_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
  Li  Li0  1  0.684  0.684  0.709  1.0
  Mg  Mg1  1  0.397  0.397  0.288  1.0
  Mg  Mg2  1  0.991  0.991  0.657  1.0
  Mg  Mg3  1  0.001  0.001  0.999  1.0
  Mg  Mg4  1  0.657  0.657  0.343  1.0
  Mg  Mg5  1  0.601  0.321  0.997  1.0
  Mg  Mg6  1  0.714  0.401  0.602  1.0
  Mg  Mg7  1  0.316  0.001  0.398  1.0
  Mg  Mg8  1  0.345  0.000  0.001  1.0
  Mg  Mg9  1  0.999  0.603  0.685  1.0
  Mg  Mg10  1  0.684  0.286  0.316  1.0
  Mg  Mg11  1  0.286  0.684  0.316  1.0
  Mg  Mg12  1  0.603  0.999  0.685  1.0
  Mg  Mg13  1  0.000  0.345  0.001  1.0
  Mg  Mg14  1  0.001  0.316  0.398  1.0
  Mg  Mg15  1  0.401  0.714  0.602  1.0
  Mg  Mg16  1  0.321  0.601  0.997  1.0
  Al  Al17  1  0.185  0.185  0.180  1.0
  Al  Al18  1  0.369  0.369  0.818  1.0
  Al  Al19  1  0.815  0.633  0.001  1.0
  Al  Al20  1  0.998  0.813  0.369  1.0
  Al  Al21  1  0.366  0.180  0.635  1.0
  Al  Al22  1  0.186  0.819  0.815  1.0
  Al  Al23  1  0.002  0.634  0.184  1.0
  Al  Al24  1  0.634  0.002  0.184  1.0
  Al  Al25  1  0.819  0.186  0.815  1.0
  Al  Al26  1  0.180  0.366  0.635  1.0
  Al  Al27  1  0.813  0.998  0.369  1.0
  Al  Al28  1  0.633  0.815  0.001  1.0
[/CIF]
.
The compound described by Li(Mg4Al3)4 is gamma-brass-derived structured and crystallizes in the monoclinic Cm space group. Li(1) is bonded in a 12-coordinate geometry to one Mg(2), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(9), one Al(2), two equivalent Al(3), and two equivalent Al(4) atoms. There are ten inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to one Mg(4), two equivalent Mg(10), two equivalent Mg(5), two equivalent Mg(7), one Al(1), two equivalent Al(3), and two equivalent Al(5) atoms. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to one Li(1), one Mg(3), two equivalent Mg(7), two equivalent Al(3), two equivalent Al(5), and two equivalent Al(6) atoms. In the third Mg site, Mg(3) is bonded in a 16-coordinate geometry to one Mg(2), one Mg(4), two equivalent Mg(8), one Al(1), one Al(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(6), and two equivalent Al(7) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to one Mg(1), one Mg(3), two equivalent Mg(6), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(7) atoms. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Li(1), one Mg(1), one Mg(10), one Mg(6), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(2), one Al(3), one Al(6), and one Al(7) atom. In the sixth Mg site, Mg(6) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(4), one Mg(5), one Mg(7), two equivalent Mg(9), one Al(2), one Al(4), one Al(5), one Al(6), and one Al(7) atom. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Mg(1), one Mg(2), one Mg(5), one Mg(6), one Mg(9), two equivalent Mg(10), one Al(1), one Al(4), one Al(5), one Al(6), and one Al(7) atom. In the eighth Mg site, Mg(8) is bonded in a 10-coordinate geometry to one Mg(10), one Mg(3), one Mg(5), one Mg(9), one Al(1), one Al(2), one Al(4), one Al(5), one Al(6), and one Al(7) atom. In the ninth Mg site, Mg(9) is bonded in a 12-coordinate geometry to one Li(1), one Mg(10), one Mg(5), one Mg(7), one Mg(8), two equivalent Mg(6), one Al(3), one Al(4), one Al(5), and two equivalent Al(6) atoms. In the tenth Mg site, Mg(10) is bonded in a 12-coordinate geometry to one Mg(1), one Mg(5), one Mg(6), one Mg(8), one Mg(9), two equivalent Mg(7), one Al(3), one Al(4), one Al(5), and two equivalent Al(7) atoms. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted q6 geometry to one Mg(1), one Mg(3), two equivalent Mg(5), two equivalent Mg(7), two equivalent Mg(8), one Al(2), and two equivalent Al(4) atoms. In the second Al site, Al(3) is bonded in a 11-coordinate geometry to one Li(1), one Mg(1), one Mg(10), one Mg(2), one Mg(3), one Mg(4), one Mg(5), one Mg(9), one Al(3), one Al(6), and one Al(7) atom. In the third Al site, Al(4) is bonded in a 11-coordinate geometry to one Li(1), one Mg(10), one Mg(3), one Mg(4), one Mg(6), one Mg(7), one Mg(8), one Mg(9), one Al(1), one Al(4), and one Al(7) atom. In the fourth Al site, Al(5) is bonded in a 11-coordinate geometry to one Mg(1), one Mg(10), one Mg(2), one Mg(3), one Mg(6), one Mg(7), one Mg(8), one Mg(9), one Al(2), one Al(5), and one Al(6) atom. In the fifth Al site, Al(6) is bonded in a 11-coordinate geometry to one Mg(2), one Mg(3), one Mg(5), one Mg(6), one Mg(7), one Mg(8), two equivalent Mg(9), one Al(3), one Al(5), and one Al(7) atom. In the sixth Al site, Al(2) is bonded in a 11-coordinate geometry to one Li(1), one Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(8), one Al(1), and two equivalent Al(5) atoms. In the seventh Al site, Al(7) is bonded in a 11-coordinate geometry to one Mg(3), one Mg(4), one Mg(5), one Mg(6), one Mg(7), one Mg(8), two equivalent Mg(10), one Al(3), one Al(4), and one Al(6) atom. is represented by the CIF file [CIF]
data_Li(Mg4Al3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.078
_cell_length_b   9.078
_cell_length_c   9.116
_cell_angle_alpha   70.563
_cell_angle_beta   70.563
_cell_angle_gamma   109.168
_symmetry_Int_Tables_number   1
_cell_volume   580.971
_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
  Li  Li0  1  0.684  0.684  0.709  1.0
  Mg  Mg1  1  0.397  0.397  0.288  1.0
  Mg  Mg2  1  0.991  0.991  0.657  1.0
  Mg  Mg3  1  0.001  0.001  0.999  1.0
  Mg  Mg4  1  0.657  0.657  0.343  1.0
  Mg  Mg5  1  0.601  0.321  0.997  1.0
  Mg  Mg6  1  0.714  0.401  0.602  1.0
  Mg  Mg7  1  0.316  0.001  0.398  1.0
  Mg  Mg8  1  0.345  0.000  0.001  1.0
  Mg  Mg9  1  0.999  0.603  0.685  1.0
  Mg  Mg10  1  0.684  0.286  0.316  1.0
  Mg  Mg11  1  0.286  0.684  0.316  1.0
  Mg  Mg12  1  0.603  0.999  0.685  1.0
  Mg  Mg13  1  0.000  0.345  0.001  1.0
  Mg  Mg14  1  0.001  0.316  0.398  1.0
  Mg  Mg15  1  0.401  0.714  0.602  1.0
  Mg  Mg16  1  0.321  0.601  0.997  1.0
  Al  Al17  1  0.185  0.185  0.180  1.0
  Al  Al18  1  0.369  0.369  0.818  1.0
  Al  Al19  1  0.815  0.633  0.001  1.0
  Al  Al20  1  0.998  0.813  0.369  1.0
  Al  Al21  1  0.366  0.180  0.635  1.0
  Al  Al22  1  0.186  0.819  0.815  1.0
  Al  Al23  1  0.002  0.634  0.184  1.0
  Al  Al24  1  0.634  0.002  0.184  1.0
  Al  Al25  1  0.819  0.186  0.815  1.0
  Al  Al26  1  0.180  0.366  0.635  1.0
  Al  Al27  1  0.813  0.998  0.369  1.0
  Al  Al28  1  0.633  0.815  0.001  1.0
[/CIF]
.