The crystal structure described by SrMg3 crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded to twelve equivalent Mg(1) atoms to form a mixture of face and corner-sharing SrMg12 cuboctahedra. Mg(1) is bonded in a 10-coordinate geometry to four equivalent Sr(1) and six equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrMg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.149
_cell_length_b   7.149
_cell_length_c   5.386
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   238.426
_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
  Sr  Sr0  1  0.333  0.667  0.250  1.0
  Sr  Sr1  1  0.667  0.333  0.750  1.0
  Mg  Mg2  1  0.300  0.150  0.250  1.0
  Mg  Mg3  1  0.850  0.150  0.250  1.0
  Mg  Mg4  1  0.850  0.700  0.250  1.0
  Mg  Mg5  1  0.700  0.850  0.750  1.0
  Mg  Mg6  1  0.150  0.300  0.750  1.0
  Mg  Mg7  1  0.150  0.850  0.750  1.0
[/CIF]
.
The crystal structure described by SrMg3 crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded to twelve equivalent Mg(1) atoms to form a mixture of face and corner-sharing SrMg12 cuboctahedra. Mg(1) is bonded in a 10-coordinate geometry to four equivalent Sr(1) and six equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrMg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.149
_cell_length_b   7.149
_cell_length_c   5.386
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   238.426
_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
  Sr  Sr0  1  0.333  0.667  0.250  1.0
  Sr  Sr1  1  0.667  0.333  0.750  1.0
  Mg  Mg2  1  0.300  0.150  0.250  1.0
  Mg  Mg3  1  0.850  0.150  0.250  1.0
  Mg  Mg4  1  0.850  0.700  0.250  1.0
  Mg  Mg5  1  0.700  0.850  0.750  1.0
  Mg  Mg6  1  0.150  0.300  0.750  1.0
  Mg  Mg7  1  0.150  0.850  0.750  1.0
[/CIF]
.