The structure described by Mg2Sr is Magnesium tetraboride-like structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one Mg(3), two equivalent Mg(1), two equivalent Mg(4), and three equivalent Mg(2) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Mg(1), two equivalent Mg(2), two equivalent Mg(4), and three equivalent Mg(3) atoms. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 7-coordinate geometry to one Sr(2), two equivalent Sr(1), two equivalent Mg(2), and two equivalent Mg(3) atoms. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to two equivalent Sr(2), three equivalent Sr(1), one Mg(4), and two equivalent Mg(1) atoms. In the third Mg site, Mg(3) is bonded in a 8-coordinate geometry to one Sr(1), three equivalent Sr(2), two equivalent Mg(1), and two equivalent Mg(4) atoms. In the fourth Mg site, Mg(4) is bonded in a 7-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Mg(2), and two equivalent Mg(3) atoms. is represented by the CIF card [CIF]
data_SrMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.782
_cell_length_b   6.782
_cell_length_c   7.841
_cell_angle_alpha   87.292
_cell_angle_beta   87.292
_cell_angle_gamma   34.548
_symmetry_Int_Tables_number   1
_cell_volume   204.298
_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  0.655  0.655  0.275  1.0
  Sr  Sr1  1  0.915  0.915  0.602  1.0
  Mg  Mg2  1  0.987  0.987  0.014  1.0
  Mg  Mg3  1  0.378  0.378  0.253  1.0
  Mg  Mg4  1  0.624  0.624  0.768  1.0
  Mg  Mg5  1  0.274  0.274  0.922  1.0
[/CIF]
.
The structure described by Mg2Sr is Magnesium tetraboride-like structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one Mg(3), two equivalent Mg(1), two equivalent Mg(4), and three equivalent Mg(2) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Mg(1), two equivalent Mg(2), two equivalent Mg(4), and three equivalent Mg(3) atoms. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 7-coordinate geometry to one Sr(2), two equivalent Sr(1), two equivalent Mg(2), and two equivalent Mg(3) atoms. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to two equivalent Sr(2), three equivalent Sr(1), one Mg(4), and two equivalent Mg(1) atoms. In the third Mg site, Mg(3) is bonded in a 8-coordinate geometry to one Sr(1), three equivalent Sr(2), two equivalent Mg(1), and two equivalent Mg(4) atoms. In the fourth Mg site, Mg(4) is bonded in a 7-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Mg(2), and two equivalent Mg(3) atoms. is represented by the CIF card [CIF]
data_SrMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.782
_cell_length_b   6.782
_cell_length_c   7.841
_cell_angle_alpha   87.292
_cell_angle_beta   87.292
_cell_angle_gamma   34.548
_symmetry_Int_Tables_number   1
_cell_volume   204.298
_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  0.655  0.655  0.275  1.0
  Sr  Sr1  1  0.915  0.915  0.602  1.0
  Mg  Mg2  1  0.987  0.987  0.014  1.0
  Mg  Mg3  1  0.378  0.378  0.253  1.0
  Mg  Mg4  1  0.624  0.624  0.768  1.0
  Mg  Mg5  1  0.274  0.274  0.922  1.0
[/CIF]
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