The crystal structure described by YMg3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Y(1) atoms to form distorted MgY4Mg8 cuboctahedra that share corners with four equivalent Y(1)Mg12 cuboctahedra, corners with fourteen equivalent Mg(1)Y4Mg8 cuboctahedra, edges with six equivalent Y(1)Mg12 cuboctahedra, edges with twelve equivalent Mg(1)Y4Mg8 cuboctahedra, faces with four equivalent Y(1)Mg12 cuboctahedra, and faces with sixteen equivalent Mg(1)Y4Mg8 cuboctahedra. Y(1) is bonded to twelve equivalent Mg(1) atoms to form YMg12 cuboctahedra that share corners with six equivalent Y(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Y4Mg8 cuboctahedra, edges with eighteen equivalent Mg(1)Y4Mg8 cuboctahedra, faces with eight equivalent Y(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Y4Mg8 cuboctahedra. is represented by the CIF file [CIF]
data_YMg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.685
_cell_length_b   6.685
_cell_length_c   5.167
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   199.970
_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
  Y  Y0  1  0.667  0.333  0.250  1.0
  Y  Y1  1  0.333  0.667  0.750  1.0
  Mg  Mg2  1  0.163  0.325  0.250  1.0
  Mg  Mg3  1  0.163  0.837  0.250  1.0
  Mg  Mg4  1  0.675  0.837  0.250  1.0
  Mg  Mg5  1  0.325  0.163  0.750  1.0
  Mg  Mg6  1  0.837  0.163  0.750  1.0
  Mg  Mg7  1  0.837  0.675  0.750  1.0
[/CIF]
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The crystal structure described by YMg3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Y(1) atoms to form distorted MgY4Mg8 cuboctahedra that share corners with four equivalent Y(1)Mg12 cuboctahedra, corners with fourteen equivalent Mg(1)Y4Mg8 cuboctahedra, edges with six equivalent Y(1)Mg12 cuboctahedra, edges with twelve equivalent Mg(1)Y4Mg8 cuboctahedra, faces with four equivalent Y(1)Mg12 cuboctahedra, and faces with sixteen equivalent Mg(1)Y4Mg8 cuboctahedra. Y(1) is bonded to twelve equivalent Mg(1) atoms to form YMg12 cuboctahedra that share corners with six equivalent Y(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Y4Mg8 cuboctahedra, edges with eighteen equivalent Mg(1)Y4Mg8 cuboctahedra, faces with eight equivalent Y(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Y4Mg8 cuboctahedra. is represented by the CIF file [CIF]
data_YMg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.685
_cell_length_b   6.685
_cell_length_c   5.167
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   199.970
_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
  Y  Y0  1  0.667  0.333  0.250  1.0
  Y  Y1  1  0.333  0.667  0.750  1.0
  Mg  Mg2  1  0.163  0.325  0.250  1.0
  Mg  Mg3  1  0.163  0.837  0.250  1.0
  Mg  Mg4  1  0.675  0.837  0.250  1.0
  Mg  Mg5  1  0.325  0.163  0.750  1.0
  Mg  Mg6  1  0.837  0.163  0.750  1.0
  Mg  Mg7  1  0.837  0.675  0.750  1.0
[/CIF]
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