The material structure described by Na4Mg(Mo2O5)2 crystallizes in the triclinic P1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(10), one O(6), one O(7), and one O(9) atom. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form MoO6 octahedra that share corners with four equivalent Mo(2)O6 octahedra and  a cornercorner with one Mo(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 5-16°. In the second Mo site, Mo(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form MoO6 octahedra that share corners with four equivalent Mo(1)O6 octahedra and  a cornercorner with one Mo(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 5-16°. In the third Mo site, Mo(3) is bonded to one O(10), one O(5), one O(8), and one O(9) atom to form distorted corner-sharing MoO4 trigonal pyramids. The corner-sharing octahedral tilt angles are 36°. In the fourth Mo site, Mo(4) is bonded in a 3-coordinate geometry to one O(6), one O(7), and one O(9) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(4)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(4)Na4Mo2 octahedra, faces with two equivalent O(2)Na4Mo2 octahedra, and faces with two equivalent O(3)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(3)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(3)Na4Mo2 octahedra, faces with two equivalent O(1)Na4Mo2 octahedra, and faces with two equivalent O(4)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the third O site, O(3) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(2)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(2)Na4Mo2 octahedra, faces with two equivalent O(1)Na4Mo2 octahedra, and faces with two equivalent O(4)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(1)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(1)Na4Mo2 octahedra, faces with two equivalent O(2)Na4Mo2 octahedra, and faces with two equivalent O(3)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Mo(1), and one Mo(3) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Mg(1), one Mo(1), and one Mo(4) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Mg(1), one Mo(2), and one Mo(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(2), one Na(4), one Mo(2), and one Mo(3) atom. In the ninth O site, O(9) is bonded to one Na(1), one Na(4), one Mg(1), one Mo(3), and one Mo(4) atom to form distorted corner-sharing ONa2MgMo2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 35-83°. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Mg(1), and one Mo(3) atom. is represented by the CIF file [CIF]
data_Na4Mg(Mo2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.861
_cell_length_b   5.922
_cell_length_c   8.483
_cell_angle_alpha   110.337
_cell_angle_beta   110.186
_cell_angle_gamma   90.458
_symmetry_Int_Tables_number   1
_cell_volume   256.392
_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  0.392  0.934  0.829  1.0
  Na  Na1  1  0.629  0.058  0.200  1.0
  Na  Na2  1  0.926  0.359  0.800  1.0
  Na  Na3  1  0.060  0.601  0.170  1.0
  Mg  Mg4  1  0.406  0.046  0.498  1.0
  Mo  Mo5  1  0.002  0.995  0.007  1.0
  Mo  Mo6  1  0.493  0.488  0.992  1.0
  Mo  Mo7  1  0.755  0.614  0.499  1.0
  Mo  Mo8  1  0.197  0.435  0.499  1.0
  O  O9  1  0.749  0.231  0.987  1.0
  O  O10  1  0.735  0.732  0.962  1.0
  O  O11  1  0.260  0.258  0.040  1.0
  O  O12  1  0.252  0.758  0.018  1.0
  O  O13  1  0.904  0.872  0.715  1.0
  O  O14  1  0.106  0.109  0.303  1.0
  O  O15  1  0.302  0.304  0.694  1.0
  O  O16  1  0.687  0.658  0.285  1.0
  O  O17  1  0.349  0.728  0.500  1.0
  O  O18  1  0.628  0.307  0.500  1.0
[/CIF]
.
The material structure described by Na4Mg(Mo2O5)2 crystallizes in the triclinic P1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(10), one O(6), one O(7), and one O(9) atom. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form MoO6 octahedra that share corners with four equivalent Mo(2)O6 octahedra and  a cornercorner with one Mo(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 5-16°. In the second Mo site, Mo(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form MoO6 octahedra that share corners with four equivalent Mo(1)O6 octahedra and  a cornercorner with one Mo(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 5-16°. In the third Mo site, Mo(3) is bonded to one O(10), one O(5), one O(8), and one O(9) atom to form distorted corner-sharing MoO4 trigonal pyramids. The corner-sharing octahedral tilt angles are 36°. In the fourth Mo site, Mo(4) is bonded in a 3-coordinate geometry to one O(6), one O(7), and one O(9) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(4)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(4)Na4Mo2 octahedra, faces with two equivalent O(2)Na4Mo2 octahedra, and faces with two equivalent O(3)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(3)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(3)Na4Mo2 octahedra, faces with two equivalent O(1)Na4Mo2 octahedra, and faces with two equivalent O(4)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the third O site, O(3) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(2)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(2)Na4Mo2 octahedra, faces with two equivalent O(1)Na4Mo2 octahedra, and faces with two equivalent O(4)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Mo(1), and one Mo(2) atom to form distorted ONa4Mo2 octahedra that share corners with two equivalent O(1)Na4Mo2 octahedra, corners with two equivalent O(9)Na2MgMo2 trigonal bipyramids, edges with two equivalent O(1)Na4Mo2 octahedra, faces with two equivalent O(2)Na4Mo2 octahedra, and faces with two equivalent O(3)Na4Mo2 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Mo(1), and one Mo(3) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Mg(1), one Mo(1), and one Mo(4) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Mg(1), one Mo(2), and one Mo(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(2), one Na(4), one Mo(2), and one Mo(3) atom. In the ninth O site, O(9) is bonded to one Na(1), one Na(4), one Mg(1), one Mo(3), and one Mo(4) atom to form distorted corner-sharing ONa2MgMo2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 35-83°. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Mg(1), and one Mo(3) atom. is represented by the CIF file [CIF]
data_Na4Mg(Mo2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.861
_cell_length_b   5.922
_cell_length_c   8.483
_cell_angle_alpha   110.337
_cell_angle_beta   110.186
_cell_angle_gamma   90.458
_symmetry_Int_Tables_number   1
_cell_volume   256.392
_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  0.392  0.934  0.829  1.0
  Na  Na1  1  0.629  0.058  0.200  1.0
  Na  Na2  1  0.926  0.359  0.800  1.0
  Na  Na3  1  0.060  0.601  0.170  1.0
  Mg  Mg4  1  0.406  0.046  0.498  1.0
  Mo  Mo5  1  0.002  0.995  0.007  1.0
  Mo  Mo6  1  0.493  0.488  0.992  1.0
  Mo  Mo7  1  0.755  0.614  0.499  1.0
  Mo  Mo8  1  0.197  0.435  0.499  1.0
  O  O9  1  0.749  0.231  0.987  1.0
  O  O10  1  0.735  0.732  0.962  1.0
  O  O11  1  0.260  0.258  0.040  1.0
  O  O12  1  0.252  0.758  0.018  1.0
  O  O13  1  0.904  0.872  0.715  1.0
  O  O14  1  0.106  0.109  0.303  1.0
  O  O15  1  0.302  0.304  0.694  1.0
  O  O16  1  0.687  0.658  0.285  1.0
  O  O17  1  0.349  0.728  0.500  1.0
  O  O18  1  0.628  0.307  0.500  1.0
[/CIF]
.