The compound described by NaMg6W crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent W(1) atoms to form NaMg10W2 cuboctahedra that share corners with four equivalent Mg(2)Na2Mg10 cuboctahedra, corners with six equivalent Na(1)Mg10W2 cuboctahedra, edges with two equivalent Mg(2)Na2Mg10 cuboctahedra, edges with four equivalent W(1)Na2Mg10 cuboctahedra, faces with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with two equivalent W(1)Na2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent W(1) atoms. In the second Mg site, Mg(2) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form MgNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)Mg10W2 cuboctahedra, corners with six equivalent Mg(2)Na2Mg10 cuboctahedra, edges with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with six equivalent W(1)Na2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 4-coordinate geometry to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), and two equivalent W(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted linear geometry to two equivalent Mg(2), four equivalent Mg(1), and two equivalent W(1) atoms. W(1) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form WNa2Mg10 cuboctahedra that share corners with six equivalent W(1)Na2Mg10 cuboctahedra, edges with four equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent W(1)Na2Mg10 cuboctahedra, and faces with six equivalent Mg(2)Na2Mg10 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaMg6W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.236
_cell_length_b   6.236
_cell_length_c   5.042
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.591
_symmetry_Int_Tables_number   1
_cell_volume   170.510
_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
  Na  Na0  1  0.833  0.167  0.000  1.0
  Mg  Mg1  1  0.822  0.637  0.000  1.0
  Mg  Mg2  1  0.363  0.178  0.000  1.0
  Mg  Mg3  1  0.333  0.667  0.000  1.0
  Mg  Mg4  1  0.666  0.833  0.500  1.0
  Mg  Mg5  1  0.167  0.334  0.500  1.0
  Mg  Mg6  1  0.163  0.837  0.500  1.0
  W  W7  1  0.653  0.347  0.500  1.0
[/CIF]
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The compound described by NaMg6W crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent W(1) atoms to form NaMg10W2 cuboctahedra that share corners with four equivalent Mg(2)Na2Mg10 cuboctahedra, corners with six equivalent Na(1)Mg10W2 cuboctahedra, edges with two equivalent Mg(2)Na2Mg10 cuboctahedra, edges with four equivalent W(1)Na2Mg10 cuboctahedra, faces with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with two equivalent W(1)Na2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and two equivalent W(1) atoms. In the second Mg site, Mg(2) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form MgNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)Mg10W2 cuboctahedra, corners with six equivalent Mg(2)Na2Mg10 cuboctahedra, edges with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Mg(2)Na2Mg10 cuboctahedra, and faces with six equivalent W(1)Na2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 4-coordinate geometry to two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), and two equivalent W(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted linear geometry to two equivalent Mg(2), four equivalent Mg(1), and two equivalent W(1) atoms. W(1) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form WNa2Mg10 cuboctahedra that share corners with six equivalent W(1)Na2Mg10 cuboctahedra, edges with four equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent Na(1)Mg10W2 cuboctahedra, faces with two equivalent W(1)Na2Mg10 cuboctahedra, and faces with six equivalent Mg(2)Na2Mg10 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaMg6W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.236
_cell_length_b   6.236
_cell_length_c   5.042
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.591
_symmetry_Int_Tables_number   1
_cell_volume   170.510
_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
  Na  Na0  1  0.833  0.167  0.000  1.0
  Mg  Mg1  1  0.822  0.637  0.000  1.0
  Mg  Mg2  1  0.363  0.178  0.000  1.0
  Mg  Mg3  1  0.333  0.667  0.000  1.0
  Mg  Mg4  1  0.666  0.833  0.500  1.0
  Mg  Mg5  1  0.167  0.334  0.500  1.0
  Mg  Mg6  1  0.163  0.837  0.500  1.0
  W  W7  1  0.653  0.347  0.500  1.0
[/CIF]
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