The material structure described by SrMg5 crystallizes in the hexagonal P-62m space group. Sr(1) is bonded in a distorted hexagonal planar geometry to six equivalent Mg(2) and twelve equivalent Mg(1) atoms. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Sr(1), four equivalent Mg(1), and four equivalent Mg(2) atoms to form a mixture of distorted face, corner, and edge-sharing MgSr4Mg8 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 9-coordinate geometry to three equivalent Sr(1) and six equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrMg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.029
_cell_length_b   6.188
_cell_length_c   6.188
_cell_angle_alpha   60.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   166.771
_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
  Sr  Sr0  1  0.500  0.667  0.333  1.0
  Mg  Mg1  1  0.000  0.170  0.830  1.0
  Mg  Mg2  1  0.500  0.333  0.000  1.0
  Mg  Mg3  1  0.000  0.164  0.333  1.0
  Mg  Mg4  1  0.500  0.000  0.667  1.0
  Mg  Mg5  1  0.000  0.667  0.836  1.0
[/CIF]
.
The material structure described by SrMg5 crystallizes in the hexagonal P-62m space group. Sr(1) is bonded in a distorted hexagonal planar geometry to six equivalent Mg(2) and twelve equivalent Mg(1) atoms. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Sr(1), four equivalent Mg(1), and four equivalent Mg(2) atoms to form a mixture of distorted face, corner, and edge-sharing MgSr4Mg8 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 9-coordinate geometry to three equivalent Sr(1) and six equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrMg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.029
_cell_length_b   6.188
_cell_length_c   6.188
_cell_angle_alpha   60.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   166.771
_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
  Sr  Sr0  1  0.500  0.667  0.333  1.0
  Mg  Mg1  1  0.000  0.170  0.830  1.0
  Mg  Mg2  1  0.500  0.333  0.000  1.0
  Mg  Mg3  1  0.000  0.164  0.333  1.0
  Mg  Mg4  1  0.500  0.000  0.667  1.0
  Mg  Mg5  1  0.000  0.667  0.836  1.0
[/CIF]
.