The structure described by Na4MnO4 crystallizes in the triclinic P1 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(7) atom to form distorted NaO5 trigonal bipyramids that share  a cornercorner with one Mn(2)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Na(7)O4 trigonal pyramid, edges with two equivalent Na(3)O5 square pyramids, and  an edgeedge with one Mn(2)O4 tetrahedra. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the third Na site, Na(3) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted NaO5 square pyramids that share  a cornercorner with one Mn(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Na(7)O4 trigonal pyramid,  an edgeedge with one Mn(1)O4 tetrahedra, and edges with two equivalent Na(1)O5 trigonal bipyramids. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the fifth Na site, Na(5) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the sixth Na site, Na(6) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(3)O5 square pyramid, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Na(1)O5 trigonal bipyramid, and edges with two equivalent Na(7)O4 trigonal pyramids. In the seventh Na site, Na(7) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(3)O5 square pyramid, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Na(1)O5 trigonal bipyramid, and edges with two equivalent Na(6)O4 trigonal pyramids. In the eighth Na site, Na(8) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(6), one O(7), and one O(8) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form MnO4 tetrahedra that share  a cornercorner with one Na(3)O5 square pyramid, corners with two equivalent Na(1)O5 trigonal bipyramids, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Na(7)O4 trigonal pyramids, and  an edgeedge with one Na(3)O5 square pyramid. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form MnO4 tetrahedra that share corners with two equivalent Na(3)O5 square pyramids,  a cornercorner with one Na(1)O5 trigonal bipyramid, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Na(7)O4 trigonal pyramids, and  an edgeedge with one Na(1)O5 trigonal bipyramid. There are eight 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 Na(8), and one Mn(2) atom to form a mixture of corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-18°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Na(8), and one Mn(2) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Na(5), and one Mn(1) atom. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Na(5), and one Mn(1) atom to form a mixture of corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-19°. In the fifth O site, O(5) is bonded to one Na(3), one Na(4), one Na(5), one Na(6), one Na(7), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-18°. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Na(4), one Na(5), one Na(6), one Na(7), one Na(8), and one Mn(1) atom. In the seventh O site, O(7) is bonded to one Na(1), one Na(2), one Na(6), one Na(7), one Na(8), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-19°. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Na(2), one Na(5), one Na(6), one Na(7), one Na(8), and one Mn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4MnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.484
_cell_length_b   5.778
_cell_length_c   5.549
_cell_angle_alpha   67.867
_cell_angle_beta   109.281
_cell_angle_gamma   102.410
_symmetry_Int_Tables_number   1
_cell_volume   236.560
_cell_formula_units_Z   2
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  0.182  0.002  0.644  1.0
  Na  Na1  1  0.131  0.509  0.114  1.0
  Na  Na2  1  0.314  0.552  0.676  1.0
  Na  Na3  1  0.363  0.047  0.204  1.0
  Na  Na4  1  0.576  0.043  0.736  1.0
  Na  Na5  1  0.723  0.528  0.922  1.0
  Na  Na6  1  0.772  0.029  0.394  1.0
  Na  Na7  1  0.919  0.511  0.582  1.0
  Mn  Mn8  1  0.501  0.560  0.309  1.0
  Mn  Mn9  1  0.994  0.995  0.009  1.0
  O  O10  1  0.131  0.248  0.865  1.0
  O  O11  1  0.103  0.786  0.323  1.0
  O  O12  1  0.391  0.769  0.996  1.0
  O  O13  1  0.365  0.306  0.453  1.0
  O  O14  1  0.549  0.757  0.513  1.0
  O  O15  1  0.658  0.385  0.324  1.0
  O  O16  1  0.946  0.799  0.804  1.0
  O  O17  1  0.837  0.171  0.993  1.0
[/CIF]
.
The structure described by Na4MnO4 crystallizes in the triclinic P1 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(7) atom to form distorted NaO5 trigonal bipyramids that share  a cornercorner with one Mn(2)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Na(7)O4 trigonal pyramid, edges with two equivalent Na(3)O5 square pyramids, and  an edgeedge with one Mn(2)O4 tetrahedra. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the third Na site, Na(3) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted NaO5 square pyramids that share  a cornercorner with one Mn(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Na(7)O4 trigonal pyramid,  an edgeedge with one Mn(1)O4 tetrahedra, and edges with two equivalent Na(1)O5 trigonal bipyramids. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the fifth Na site, Na(5) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the sixth Na site, Na(6) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(3)O5 square pyramid, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Na(1)O5 trigonal bipyramid, and edges with two equivalent Na(7)O4 trigonal pyramids. In the seventh Na site, Na(7) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(3)O5 square pyramid, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Na(1)O5 trigonal bipyramid, and edges with two equivalent Na(6)O4 trigonal pyramids. In the eighth Na site, Na(8) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(6), one O(7), and one O(8) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form MnO4 tetrahedra that share  a cornercorner with one Na(3)O5 square pyramid, corners with two equivalent Na(1)O5 trigonal bipyramids, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Na(7)O4 trigonal pyramids, and  an edgeedge with one Na(3)O5 square pyramid. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form MnO4 tetrahedra that share corners with two equivalent Na(3)O5 square pyramids,  a cornercorner with one Na(1)O5 trigonal bipyramid, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Na(7)O4 trigonal pyramids, and  an edgeedge with one Na(1)O5 trigonal bipyramid. There are eight 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 Na(8), and one Mn(2) atom to form a mixture of corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-18°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Na(8), and one Mn(2) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Na(5), and one Mn(1) atom. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Na(3), one Na(4), one Na(5), and one Mn(1) atom to form a mixture of corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-19°. In the fifth O site, O(5) is bonded to one Na(3), one Na(4), one Na(5), one Na(6), one Na(7), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-18°. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Na(4), one Na(5), one Na(6), one Na(7), one Na(8), and one Mn(1) atom. In the seventh O site, O(7) is bonded to one Na(1), one Na(2), one Na(6), one Na(7), one Na(8), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing ONa5Mn octahedra. The corner-sharing octahedral tilt angles range from 15-19°. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Na(2), one Na(5), one Na(6), one Na(7), one Na(8), and one Mn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4MnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.484
_cell_length_b   5.778
_cell_length_c   5.549
_cell_angle_alpha   67.867
_cell_angle_beta   109.281
_cell_angle_gamma   102.410
_symmetry_Int_Tables_number   1
_cell_volume   236.560
_cell_formula_units_Z   2
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  0.182  0.002  0.644  1.0
  Na  Na1  1  0.131  0.509  0.114  1.0
  Na  Na2  1  0.314  0.552  0.676  1.0
  Na  Na3  1  0.363  0.047  0.204  1.0
  Na  Na4  1  0.576  0.043  0.736  1.0
  Na  Na5  1  0.723  0.528  0.922  1.0
  Na  Na6  1  0.772  0.029  0.394  1.0
  Na  Na7  1  0.919  0.511  0.582  1.0
  Mn  Mn8  1  0.501  0.560  0.309  1.0
  Mn  Mn9  1  0.994  0.995  0.009  1.0
  O  O10  1  0.131  0.248  0.865  1.0
  O  O11  1  0.103  0.786  0.323  1.0
  O  O12  1  0.391  0.769  0.996  1.0
  O  O13  1  0.365  0.306  0.453  1.0
  O  O14  1  0.549  0.757  0.513  1.0
  O  O15  1  0.658  0.385  0.324  1.0
  O  O16  1  0.946  0.799  0.804  1.0
  O  O17  1  0.837  0.171  0.993  1.0
[/CIF]
.