The material structure described by NaMg6Sn is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded to two equivalent Mg(4); four equivalent Mg(1); four Mg(3,3); and two equivalent Sn(1) atoms to form NaMg10Sn2 cuboctahedra that share corners with four equivalent Mg(4)Na2Mg10 cuboctahedra; corners with six equivalent Na(1)Mg10Sn2 cuboctahedra; corners with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Mg(4)Na2Mg10 cuboctahedra; edges with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Sn(1)Na2Mg10 cuboctahedra; edges with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Mg(2)Mg10Sn2 cuboctahedra. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Sn(1) atoms to form distorted MgNa2Mg8Sn2 cuboctahedra that share corners with four equivalent Mg(2)Mg10Sn2 cuboctahedra; corners with four equivalent Sn(1)Na2Mg10 cuboctahedra; corners with ten equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with two equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Sn(1)Na2Mg10 cuboctahedra; edges with four equivalent Na(1)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(4)Na2Mg10 cuboctahedra; edges with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; and faces with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Sn(1) atoms to form distorted MgMg10Sn2 cuboctahedra that share corners with four equivalent Sn(1)Na2Mg10 cuboctahedra; corners with six equivalent Mg(2)Mg10Sn2 cuboctahedra; corners with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Sn(1)Na2Mg10 cuboctahedra; edges with four equivalent Mg(4)Na2Mg10 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Na(1)Mg10Sn2 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Sn(1) atoms to form distorted MgNa2Mg8Sn2 cuboctahedra that share corners with four equivalent Na(1)Mg10Sn2 cuboctahedra; corners with four equivalent Mg(4)Na2Mg10 cuboctahedra; corners with ten Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Na(1)Mg10Sn2 cuboctahedra; edges with two equivalent Mg(4)Na2Mg10 cuboctahedra; edges with two equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Sn(1)Na2Mg10 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to two equivalent Na(1); two equivalent Mg(2); four equivalent Mg(1); and four Mg(3,3) atoms to form distorted MgNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)Mg10Sn2 cuboctahedra; corners with six equivalent Mg(4)Na2Mg10 cuboctahedra; corners with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Na(1)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Sn(1)Na2Mg10 cuboctahedra. In the fifth Mg site, Mg(3) is bonded to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Sn(1) atoms to form distorted MgNa2Mg8Sn2 cuboctahedra that share corners with four equivalent Na(1)Mg10Sn2 cuboctahedra; corners with four equivalent Mg(4)Na2Mg10 cuboctahedra; corners with ten Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Na(1)Mg10Sn2 cuboctahedra; edges with two equivalent Mg(4)Na2Mg10 cuboctahedra; edges with two equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Sn(1)Na2Mg10 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra. Sn(1) is bonded to two equivalent Na(1), two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms to form SnNa2Mg10 cuboctahedra that share corners with four equivalent Mg(2)Mg10Sn2 cuboctahedra; corners with six equivalent Sn(1)Na2Mg10 cuboctahedra; corners with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four equivalent Na(1)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Mg(4)Na2Mg10 cuboctahedra. is represented by the CIF card [CIF]
data_NaMg6Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.194
_cell_length_b   6.497
_cell_length_c   6.497
_cell_angle_alpha   119.737
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   190.352
_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
  Mg  Mg0  1  0.000  0.671  0.837  1.0
  Mg  Mg1  1  0.000  0.163  0.329  1.0
  Mg  Mg2  1  0.000  0.667  0.333  1.0
  Mg  Mg3  1  0.500  0.832  0.667  1.0
  Mg  Mg4  1  0.500  0.333  0.168  1.0
  Mg  Mg5  1  0.500  0.835  0.165  1.0
  Na  Na6  1  0.500  0.333  0.667  1.0
  Sn  Sn7  1  0.000  0.166  0.834  1.0
[/CIF]
.
The material structure described by NaMg6Sn is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded to two equivalent Mg(4); four equivalent Mg(1); four Mg(3,3); and two equivalent Sn(1) atoms to form NaMg10Sn2 cuboctahedra that share corners with four equivalent Mg(4)Na2Mg10 cuboctahedra; corners with six equivalent Na(1)Mg10Sn2 cuboctahedra; corners with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Mg(4)Na2Mg10 cuboctahedra; edges with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Sn(1)Na2Mg10 cuboctahedra; edges with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Mg(2)Mg10Sn2 cuboctahedra. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Sn(1) atoms to form distorted MgNa2Mg8Sn2 cuboctahedra that share corners with four equivalent Mg(2)Mg10Sn2 cuboctahedra; corners with four equivalent Sn(1)Na2Mg10 cuboctahedra; corners with ten equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with two equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Sn(1)Na2Mg10 cuboctahedra; edges with four equivalent Na(1)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(4)Na2Mg10 cuboctahedra; edges with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; and faces with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Sn(1) atoms to form distorted MgMg10Sn2 cuboctahedra that share corners with four equivalent Sn(1)Na2Mg10 cuboctahedra; corners with six equivalent Mg(2)Mg10Sn2 cuboctahedra; corners with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Sn(1)Na2Mg10 cuboctahedra; edges with four equivalent Mg(4)Na2Mg10 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Na(1)Mg10Sn2 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Sn(1) atoms to form distorted MgNa2Mg8Sn2 cuboctahedra that share corners with four equivalent Na(1)Mg10Sn2 cuboctahedra; corners with four equivalent Mg(4)Na2Mg10 cuboctahedra; corners with ten Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Na(1)Mg10Sn2 cuboctahedra; edges with two equivalent Mg(4)Na2Mg10 cuboctahedra; edges with two equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Sn(1)Na2Mg10 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to two equivalent Na(1); two equivalent Mg(2); four equivalent Mg(1); and four Mg(3,3) atoms to form distorted MgNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)Mg10Sn2 cuboctahedra; corners with six equivalent Mg(4)Na2Mg10 cuboctahedra; corners with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Na(1)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four Mg(3,3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Sn(1)Na2Mg10 cuboctahedra. In the fifth Mg site, Mg(3) is bonded to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Sn(1) atoms to form distorted MgNa2Mg8Sn2 cuboctahedra that share corners with four equivalent Na(1)Mg10Sn2 cuboctahedra; corners with four equivalent Mg(4)Na2Mg10 cuboctahedra; corners with ten Mg(3,3)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Na(1)Mg10Sn2 cuboctahedra; edges with two equivalent Mg(4)Na2Mg10 cuboctahedra; edges with two equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with four equivalent Sn(1)Na2Mg10 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(4)Na2Mg10 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra. Sn(1) is bonded to two equivalent Na(1), two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms to form SnNa2Mg10 cuboctahedra that share corners with four equivalent Mg(2)Mg10Sn2 cuboctahedra; corners with six equivalent Sn(1)Na2Mg10 cuboctahedra; corners with eight equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with two equivalent Mg(2)Mg10Sn2 cuboctahedra; edges with four equivalent Na(1)Mg10Sn2 cuboctahedra; edges with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; edges with eight Mg(3,3)Na2Mg8Sn2 cuboctahedra; faces with two equivalent Na(1)Mg10Sn2 cuboctahedra; faces with two equivalent Mg(2)Mg10Sn2 cuboctahedra; faces with two equivalent Sn(1)Na2Mg10 cuboctahedra; faces with four equivalent Mg(1)Na2Mg8Sn2 cuboctahedra; faces with four equivalent Mg(3)Na2Mg8Sn2 cuboctahedra; and faces with six equivalent Mg(4)Na2Mg10 cuboctahedra. is represented by the CIF card [CIF]
data_NaMg6Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.194
_cell_length_b   6.497
_cell_length_c   6.497
_cell_angle_alpha   119.737
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   190.352
_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
  Mg  Mg0  1  0.000  0.671  0.837  1.0
  Mg  Mg1  1  0.000  0.163  0.329  1.0
  Mg  Mg2  1  0.000  0.667  0.333  1.0
  Mg  Mg3  1  0.500  0.832  0.667  1.0
  Mg  Mg4  1  0.500  0.333  0.168  1.0
  Mg  Mg5  1  0.500  0.835  0.165  1.0
  Na  Na6  1  0.500  0.333  0.667  1.0
  Sn  Sn7  1  0.000  0.166  0.834  1.0
[/CIF]
.