The compound described by NaMg6La crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent La(1) atoms to form NaLa2Mg10 cuboctahedra that share corners with four equivalent La(1)Na2Mg10 cuboctahedra, corners with six equivalent Na(1)La2Mg10 cuboctahedra, edges with two equivalent La(1)Na2Mg10 cuboctahedra, faces with two equivalent Na(1)La2Mg10 cuboctahedra, and faces with two equivalent La(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 La(1) atoms. In the second Mg site, Mg(2) 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 La(1) atoms. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent La(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted water-like geometry to two equivalent Na(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms. La(1) is bonded to two equivalent Na(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms to form LaNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)La2Mg10 cuboctahedra, corners with six equivalent La(1)Na2Mg10 cuboctahedra, edges with two equivalent Na(1)La2Mg10 cuboctahedra, faces with two equivalent Na(1)La2Mg10 cuboctahedra, and faces with two equivalent La(1)Na2Mg10 cuboctahedra. is represented by the CIF file [CIF]
data_NaLaMg6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.288
_cell_length_b   6.819
_cell_length_c   6.819
_cell_angle_alpha   119.298
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   214.402
_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
  La  La0  1  0.500  0.165  0.835  1.0
  Mg  Mg1  1  0.500  0.663  0.825  1.0
  Mg  Mg2  1  0.500  0.175  0.337  1.0
  Mg  Mg3  1  0.000  0.824  0.667  1.0
  Mg  Mg4  1  0.000  0.333  0.176  1.0
  Mg  Mg5  1  0.000  0.338  0.662  1.0
  Mg  Mg6  1  0.000  0.836  0.164  1.0
  Na  Na7  1  0.500  0.666  0.334  1.0
[/CIF]
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The compound described by NaMg6La crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent La(1) atoms to form NaLa2Mg10 cuboctahedra that share corners with four equivalent La(1)Na2Mg10 cuboctahedra, corners with six equivalent Na(1)La2Mg10 cuboctahedra, edges with two equivalent La(1)Na2Mg10 cuboctahedra, faces with two equivalent Na(1)La2Mg10 cuboctahedra, and faces with two equivalent La(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 La(1) atoms. In the second Mg site, Mg(2) 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 La(1) atoms. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent La(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted water-like geometry to two equivalent Na(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms. La(1) is bonded to two equivalent Na(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms to form LaNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)La2Mg10 cuboctahedra, corners with six equivalent La(1)Na2Mg10 cuboctahedra, edges with two equivalent Na(1)La2Mg10 cuboctahedra, faces with two equivalent Na(1)La2Mg10 cuboctahedra, and faces with two equivalent La(1)Na2Mg10 cuboctahedra. is represented by the CIF file [CIF]
data_NaLaMg6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.288
_cell_length_b   6.819
_cell_length_c   6.819
_cell_angle_alpha   119.298
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   214.402
_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
  La  La0  1  0.500  0.165  0.835  1.0
  Mg  Mg1  1  0.500  0.663  0.825  1.0
  Mg  Mg2  1  0.500  0.175  0.337  1.0
  Mg  Mg3  1  0.000  0.824  0.667  1.0
  Mg  Mg4  1  0.000  0.333  0.176  1.0
  Mg  Mg5  1  0.000  0.338  0.662  1.0
  Mg  Mg6  1  0.000  0.836  0.164  1.0
  Na  Na7  1  0.500  0.666  0.334  1.0
[/CIF]
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