The compound described by Na3Mg4(MoO4)6 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(12), one O(4), one O(6), one O(7), and one O(8) atom to form NaO5 trigonal bipyramids that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Mo(2)O4 tetrahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one Mg(2)O6 octahedra. The corner-sharing octahedral tilt angles are 60°. In the second Na site, Na(2) is bonded to two equivalent O(1), two equivalent O(10), and two equivalent O(7) atoms to form distorted NaO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra, and corners with two equivalent Na(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 62°. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(11), one O(12), one O(2), one O(8), and two equivalent O(5) atoms to form MgO6 octahedra that share corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one Na(1)O5 trigonal bipyramid. In the second Mg site, Mg(2) is bonded to one O(10), one O(3), one O(4), one O(6), and two equivalent O(9) atoms to form MgO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Mo(1)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra, corners with three equivalent Mo(2)O4 tetrahedra,  an edgeedge with one Mg(2)O6 octahedra, and  an edgeedge with one Na(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 62°. There are three inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(11), one O(3), one O(7), and one O(8) atom to form MoO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, and corners with two equivalent Na(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 17-70°. In the second Mo site, Mo(2) is bonded to one O(1), one O(5), one O(6), and one O(9) atom to form MoO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with three equivalent Mg(2)O6 octahedra, and  a cornercorner with one Na(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 38-58°. In the third Mo site, Mo(3) is bonded to one O(10), one O(12), one O(2), and one O(4) atom to form MoO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Mg(2)O6 octahedra, and corners with two equivalent Na(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 17-59°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Na(2) and one Mo(2) atom. In the second O site, O(2) is bonded in a linear geometry to one Mg(1) and one Mo(3) atom. In the third O site, O(3) is bonded in a linear geometry to one Mg(2) and one Mo(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Mg(2), and one Mo(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one Mo(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Mg(2), and one Mo(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Mo(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Na(1), one Mg(1), and one Mo(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to two equivalent Mg(2) and one Mo(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Na(2), one Mg(2), and one Mo(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Mg(1) and one Mo(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Na(1), one Mg(1), and one Mo(3) atom. is represented by the CIF card [CIF]
data_Na3Mg4(MoO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.106
_cell_length_b   8.813
_cell_length_c   10.460
_cell_angle_alpha   106.984
_cell_angle_beta   105.138
_cell_angle_gamma   103.539
_symmetry_Int_Tables_number   1
_cell_volume   569.577
_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  0.286  0.292  0.801  1.0
  Na  Na1  1  0.714  0.708  0.199  1.0
  Na  Na2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.043  0.200  0.017  1.0
  Mg  Mg4  1  0.957  0.800  0.983  1.0
  Mg  Mg5  1  0.624  0.044  0.397  1.0
  Mg  Mg6  1  0.376  0.956  0.603  1.0
  Mo  Mo7  1  0.594  0.257  0.131  1.0
  Mo  Mo8  1  0.406  0.743  0.869  1.0
  Mo  Mo9  1  0.117  0.095  0.334  1.0
  Mo  Mo10  1  0.883  0.905  0.666  1.0
  Mo  Mo11  1  0.215  0.664  0.261  1.0
  Mo  Mo12  1  0.785  0.336  0.739  1.0
  O  O13  1  0.175  0.310  0.423  1.0
  O  O14  1  0.825  0.690  0.577  1.0
  O  O15  1  0.163  0.445  0.171  1.0
  O  O16  1  0.837  0.555  0.829  1.0
  O  O17  1  0.566  0.147  0.248  1.0
  O  O18  1  0.434  0.853  0.752  1.0
  O  O19  1  0.536  0.219  0.732  1.0
  O  O20  1  0.464  0.781  0.268  1.0
  O  O21  1  0.078  0.057  0.146  1.0
  O  O22  1  0.922  0.943  0.854  1.0
  O  O23  1  0.121  0.006  0.648  1.0
  O  O24  1  0.879  0.994  0.352  1.0
  O  O25  1  0.733  0.473  0.241  1.0
  O  O26  1  0.267  0.527  0.759  1.0
  O  O27  1  0.346  0.236  0.011  1.0
  O  O28  1  0.654  0.764  0.989  1.0
  O  O29  1  0.330  0.031  0.422  1.0
  O  O30  1  0.670  0.969  0.578  1.0
  O  O31  1  0.217  0.709  0.441  1.0
  O  O32  1  0.783  0.291  0.559  1.0
  O  O33  1  0.754  0.188  0.034  1.0
  O  O34  1  0.246  0.812  0.966  1.0
  O  O35  1  0.023  0.731  0.160  1.0
  O  O36  1  0.977  0.269  0.840  1.0
[/CIF]
.
The compound described by Na3Mg4(MoO4)6 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(12), one O(4), one O(6), one O(7), and one O(8) atom to form NaO5 trigonal bipyramids that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Mo(2)O4 tetrahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one Mg(2)O6 octahedra. The corner-sharing octahedral tilt angles are 60°. In the second Na site, Na(2) is bonded to two equivalent O(1), two equivalent O(10), and two equivalent O(7) atoms to form distorted NaO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra, and corners with two equivalent Na(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 62°. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(11), one O(12), one O(2), one O(8), and two equivalent O(5) atoms to form MgO6 octahedra that share corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one Na(1)O5 trigonal bipyramid. In the second Mg site, Mg(2) is bonded to one O(10), one O(3), one O(4), one O(6), and two equivalent O(9) atoms to form MgO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Mo(1)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra, corners with three equivalent Mo(2)O4 tetrahedra,  an edgeedge with one Mg(2)O6 octahedra, and  an edgeedge with one Na(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 62°. There are three inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(11), one O(3), one O(7), and one O(8) atom to form MoO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Mg(2)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, and corners with two equivalent Na(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 17-70°. In the second Mo site, Mo(2) is bonded to one O(1), one O(5), one O(6), and one O(9) atom to form MoO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with three equivalent Mg(2)O6 octahedra, and  a cornercorner with one Na(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 38-58°. In the third Mo site, Mo(3) is bonded to one O(10), one O(12), one O(2), and one O(4) atom to form MoO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Mg(2)O6 octahedra, and corners with two equivalent Na(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 17-59°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Na(2) and one Mo(2) atom. In the second O site, O(2) is bonded in a linear geometry to one Mg(1) and one Mo(3) atom. In the third O site, O(3) is bonded in a linear geometry to one Mg(2) and one Mo(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Mg(2), and one Mo(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one Mo(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Mg(2), and one Mo(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Mo(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Na(1), one Mg(1), and one Mo(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to two equivalent Mg(2) and one Mo(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Na(2), one Mg(2), and one Mo(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Mg(1) and one Mo(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Na(1), one Mg(1), and one Mo(3) atom. is represented by the CIF card [CIF]
data_Na3Mg4(MoO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.106
_cell_length_b   8.813
_cell_length_c   10.460
_cell_angle_alpha   106.984
_cell_angle_beta   105.138
_cell_angle_gamma   103.539
_symmetry_Int_Tables_number   1
_cell_volume   569.577
_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  0.286  0.292  0.801  1.0
  Na  Na1  1  0.714  0.708  0.199  1.0
  Na  Na2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.043  0.200  0.017  1.0
  Mg  Mg4  1  0.957  0.800  0.983  1.0
  Mg  Mg5  1  0.624  0.044  0.397  1.0
  Mg  Mg6  1  0.376  0.956  0.603  1.0
  Mo  Mo7  1  0.594  0.257  0.131  1.0
  Mo  Mo8  1  0.406  0.743  0.869  1.0
  Mo  Mo9  1  0.117  0.095  0.334  1.0
  Mo  Mo10  1  0.883  0.905  0.666  1.0
  Mo  Mo11  1  0.215  0.664  0.261  1.0
  Mo  Mo12  1  0.785  0.336  0.739  1.0
  O  O13  1  0.175  0.310  0.423  1.0
  O  O14  1  0.825  0.690  0.577  1.0
  O  O15  1  0.163  0.445  0.171  1.0
  O  O16  1  0.837  0.555  0.829  1.0
  O  O17  1  0.566  0.147  0.248  1.0
  O  O18  1  0.434  0.853  0.752  1.0
  O  O19  1  0.536  0.219  0.732  1.0
  O  O20  1  0.464  0.781  0.268  1.0
  O  O21  1  0.078  0.057  0.146  1.0
  O  O22  1  0.922  0.943  0.854  1.0
  O  O23  1  0.121  0.006  0.648  1.0
  O  O24  1  0.879  0.994  0.352  1.0
  O  O25  1  0.733  0.473  0.241  1.0
  O  O26  1  0.267  0.527  0.759  1.0
  O  O27  1  0.346  0.236  0.011  1.0
  O  O28  1  0.654  0.764  0.989  1.0
  O  O29  1  0.330  0.031  0.422  1.0
  O  O30  1  0.670  0.969  0.578  1.0
  O  O31  1  0.217  0.709  0.441  1.0
  O  O32  1  0.783  0.291  0.559  1.0
  O  O33  1  0.754  0.188  0.034  1.0
  O  O34  1  0.246  0.812  0.966  1.0
  O  O35  1  0.023  0.731  0.160  1.0
  O  O36  1  0.977  0.269  0.840  1.0
[/CIF]
.