The structure described by KSrMg6 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Sr(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms to form distorted KSr2Mg10 cuboctahedra that share corners with four equivalent Sr(1)K2Mg10 cuboctahedra, corners with six equivalent K(1)Sr2Mg10 cuboctahedra, edges with two equivalent Sr(1)K2Mg10 cuboctahedra, faces with two equivalent K(1)Sr2Mg10 cuboctahedra, and faces with two equivalent Sr(1)K2Mg10 cuboctahedra. Sr(1) is bonded to two equivalent K(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(2) atoms to form distorted SrK2Mg10 cuboctahedra that share corners with four equivalent K(1)Sr2Mg10 cuboctahedra, corners with six equivalent Sr(1)K2Mg10 cuboctahedra, edges with two equivalent K(1)Sr2Mg10 cuboctahedra, faces with two equivalent K(1)Sr2Mg10 cuboctahedra, and faces with two equivalent Sr(1)K2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Sr(1), two equivalent Mg(2), two equivalent Mg(3), and two equivalent Mg(4) atoms. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Sr(1), one Mg(3), one Mg(4), and two equivalent Mg(1) atoms. In the third Mg site, Mg(3) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Mg(2), and four equivalent Mg(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Mg(2), and four equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KSrMg6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.991
_cell_length_b   6.991
_cell_length_c   5.540
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   114.040
_symmetry_Int_Tables_number   1
_cell_volume   247.287
_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
  K  K0  1  0.836  0.164  0.500  1.0
  Sr  Sr1  1  0.340  0.660  0.500  1.0
  Mg  Mg2  1  0.329  0.161  0.500  1.0
  Mg  Mg3  1  0.839  0.671  0.500  1.0
  Mg  Mg4  1  0.179  0.323  0.000  1.0
  Mg  Mg5  1  0.677  0.821  0.000  1.0
  Mg  Mg6  1  0.648  0.352  0.000  1.0
  Mg  Mg7  1  0.151  0.849  0.000  1.0
[/CIF]
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The structure described by KSrMg6 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Sr(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms to form distorted KSr2Mg10 cuboctahedra that share corners with four equivalent Sr(1)K2Mg10 cuboctahedra, corners with six equivalent K(1)Sr2Mg10 cuboctahedra, edges with two equivalent Sr(1)K2Mg10 cuboctahedra, faces with two equivalent K(1)Sr2Mg10 cuboctahedra, and faces with two equivalent Sr(1)K2Mg10 cuboctahedra. Sr(1) is bonded to two equivalent K(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(2) atoms to form distorted SrK2Mg10 cuboctahedra that share corners with four equivalent K(1)Sr2Mg10 cuboctahedra, corners with six equivalent Sr(1)K2Mg10 cuboctahedra, edges with two equivalent K(1)Sr2Mg10 cuboctahedra, faces with two equivalent K(1)Sr2Mg10 cuboctahedra, and faces with two equivalent Sr(1)K2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Sr(1), two equivalent Mg(2), two equivalent Mg(3), and two equivalent Mg(4) atoms. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Sr(1), one Mg(3), one Mg(4), and two equivalent Mg(1) atoms. In the third Mg site, Mg(3) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Mg(2), and four equivalent Mg(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Mg(2), and four equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KSrMg6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.991
_cell_length_b   6.991
_cell_length_c   5.540
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   114.040
_symmetry_Int_Tables_number   1
_cell_volume   247.287
_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
  K  K0  1  0.836  0.164  0.500  1.0
  Sr  Sr1  1  0.340  0.660  0.500  1.0
  Mg  Mg2  1  0.329  0.161  0.500  1.0
  Mg  Mg3  1  0.839  0.671  0.500  1.0
  Mg  Mg4  1  0.179  0.323  0.000  1.0
  Mg  Mg5  1  0.677  0.821  0.000  1.0
  Mg  Mg6  1  0.648  0.352  0.000  1.0
  Mg  Mg7  1  0.151  0.849  0.000  1.0
[/CIF]
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