The compound described by Ag3Mg is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded to twelve equivalent Ag(1) atoms to form MgAg12 cuboctahedra that share corners with six equivalent Mg(1)Ag12 cuboctahedra, corners with twelve equivalent Ag(1)Mg4Ag8 cuboctahedra, edges with eighteen equivalent Ag(1)Mg4Ag8 cuboctahedra, faces with eight equivalent Mg(1)Ag12 cuboctahedra, and faces with twelve equivalent Ag(1)Mg4Ag8 cuboctahedra. Ag(1) is bonded to four equivalent Mg(1) and eight equivalent Ag(1) atoms to form distorted AgMg4Ag8 cuboctahedra that share corners with four equivalent Mg(1)Ag12 cuboctahedra, corners with fourteen equivalent Ag(1)Mg4Ag8 cuboctahedra, edges with six equivalent Mg(1)Ag12 cuboctahedra, edges with twelve equivalent Ag(1)Mg4Ag8 cuboctahedra, faces with four equivalent Mg(1)Ag12 cuboctahedra, and faces with sixteen equivalent Ag(1)Mg4Ag8 cuboctahedra. is represented by the CIF file [CIF]
data_MgAg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.797
_cell_length_b   5.797
_cell_length_c   4.799
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   139.677
_cell_formula_units_Z   2
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  0.667  0.333  0.250  1.0
  Mg  Mg1  1  0.333  0.667  0.750  1.0
  Ag  Ag2  1  0.166  0.333  0.250  1.0
  Ag  Ag3  1  0.667  0.834  0.250  1.0
  Ag  Ag4  1  0.166  0.834  0.250  1.0
  Ag  Ag5  1  0.834  0.166  0.750  1.0
  Ag  Ag6  1  0.333  0.166  0.750  1.0
  Ag  Ag7  1  0.834  0.667  0.750  1.0
[/CIF]
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The compound described by Ag3Mg is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded to twelve equivalent Ag(1) atoms to form MgAg12 cuboctahedra that share corners with six equivalent Mg(1)Ag12 cuboctahedra, corners with twelve equivalent Ag(1)Mg4Ag8 cuboctahedra, edges with eighteen equivalent Ag(1)Mg4Ag8 cuboctahedra, faces with eight equivalent Mg(1)Ag12 cuboctahedra, and faces with twelve equivalent Ag(1)Mg4Ag8 cuboctahedra. Ag(1) is bonded to four equivalent Mg(1) and eight equivalent Ag(1) atoms to form distorted AgMg4Ag8 cuboctahedra that share corners with four equivalent Mg(1)Ag12 cuboctahedra, corners with fourteen equivalent Ag(1)Mg4Ag8 cuboctahedra, edges with six equivalent Mg(1)Ag12 cuboctahedra, edges with twelve equivalent Ag(1)Mg4Ag8 cuboctahedra, faces with four equivalent Mg(1)Ag12 cuboctahedra, and faces with sixteen equivalent Ag(1)Mg4Ag8 cuboctahedra. is represented by the CIF file [CIF]
data_MgAg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.797
_cell_length_b   5.797
_cell_length_c   4.799
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   139.677
_cell_formula_units_Z   2
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  0.667  0.333  0.250  1.0
  Mg  Mg1  1  0.333  0.667  0.750  1.0
  Ag  Ag2  1  0.166  0.333  0.250  1.0
  Ag  Ag3  1  0.667  0.834  0.250  1.0
  Ag  Ag4  1  0.166  0.834  0.250  1.0
  Ag  Ag5  1  0.834  0.166  0.750  1.0
  Ag  Ag6  1  0.333  0.166  0.750  1.0
  Ag  Ag7  1  0.834  0.667  0.750  1.0
[/CIF]
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