The material described by Na10Mn2O9 is Aluminum carbonitride-like structured and crystallizes in the triclinic P1 space group. There are ten inequivalent Na sites. In the first Na site, Na(1) is bonded in a trigonal planar geometry to one O(1), one O(6), and one O(9) atom. In the second Na site, Na(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(6)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the third Na site, Na(3) is bonded to one O(2), one O(6), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra, corners with three equivalent Na(4)O4 tetrahedra, corners with three equivalent Na(5)O4 tetrahedra,  an edgeedge with one Mn(2)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the fourth Na site, Na(4) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra, corners with three equivalent Na(3)O4 tetrahedra, corners with three equivalent Na(5)O4 tetrahedra,  an edgeedge with one Mn(2)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the fifth Na site, Na(5) is bonded to one O(5), one O(6), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra, corners with three equivalent Na(3)O4 tetrahedra, corners with three equivalent Na(4)O4 tetrahedra,  an edgeedge with one Mn(2)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the sixth Na site, Na(6) is bonded to one O(1), one O(3), one O(4), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(2)O4 tetrahedra,  an edgeedge with one Na(7)O4 tetrahedra, and  an edgeedge with one Mn(1)O4 tetrahedra. In the seventh Na site, Na(7) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  an edgeedge with one Na(6)O4 tetrahedra, and  an edgeedge with one Mn(2)O4 tetrahedra. In the eighth Na site, Na(8) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(8) atom. In the ninth Na site, Na(9) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(5), and one O(8) atom. In the tenth Na site, Na(10) is bonded to one O(2), one O(4), one O(5), and one O(9) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  an edgeedge with one Na(2)O4 tetrahedra,  an edgeedge with one Na(3)O4 tetrahedra,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Na(5)O4 tetrahedra, and  an edgeedge with one Mn(1)O4 tetrahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form MnO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra, corners with three equivalent Na(2)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(6)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the second Mn site, Mn(2) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form MnO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(3)O4 tetrahedra,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Na(5)O4 tetrahedra, and  an edgeedge with one Na(7)O4 tetrahedra. There are nine inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(6), one Na(7), one Na(8), and one Na(9) atom to form a mixture of distorted corner and edge-sharing ONa6 octahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(10), one Na(2), one Na(3), and one Mn(1) atom. In the third O site, O(3) is bonded to one Na(6), one Na(7), one Na(8), one Na(9), and one Mn(1) atom to form distorted ONa4Mn trigonal bipyramids that share corners with two equivalent O(1)Na6 octahedra,  a cornercorner with one O(7)Na4Mn trigonal bipyramid,  an edgeedge with one O(1)Na6 octahedra, and  an edgeedge with one O(4)Na4Mn trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-60°. In the fourth O site, O(4) is bonded to one Na(10), one Na(2), one Na(4), one Na(6), and one Mn(1) atom to form distorted ONa4Mn trigonal bipyramids that share  a cornercorner with one O(6)Na4Mn trigonal bipyramid,  a cornercorner with one O(7)Na4Mn trigonal bipyramid,  an edgeedge with one O(1)Na6 octahedra, and  an edgeedge with one O(3)Na4Mn trigonal bipyramid. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(10), one Na(2), one Na(5), one Na(9), and one Mn(1) atom. In the sixth O site, O(6) is bonded to one Na(1), one Na(3), one Na(4), one Na(5), and one Mn(2) atom to form distorted ONa4Mn trigonal bipyramids that share  a cornercorner with one O(1)Na6 octahedra,  a cornercorner with one O(4)Na4Mn trigonal bipyramid, corners with two equivalent O(7)Na4Mn trigonal bipyramids, and  an edgeedge with one O(7)Na4Mn trigonal bipyramid. The corner-sharing octahedral tilt angles are 52°. In the seventh O site, O(7) is bonded to one Na(3), one Na(4), one Na(5), one Na(7), and one Mn(2) atom to form ONa4Mn trigonal bipyramids that share  a cornercorner with one O(1)Na6 octahedra,  a cornercorner with one O(3)Na4Mn trigonal bipyramid,  a cornercorner with one O(4)Na4Mn trigonal bipyramid, corners with two equivalent O(6)Na4Mn trigonal bipyramids, and  an edgeedge with one O(6)Na4Mn trigonal bipyramid. The corner-sharing octahedral tilt angles are 64°. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Na(6), one Na(7), one Na(8), one Na(9), and one Mn(2) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Na(1), one Na(10), one Na(3), one Na(4), one Na(5), and one Mn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na10Mn2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.225
_cell_length_b   6.527
_cell_length_c   9.499
_cell_angle_alpha   89.373
_cell_angle_beta   89.777
_cell_angle_gamma   61.556
_symmetry_Int_Tables_number   1
_cell_volume   339.316
_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
  Mn  Mn0  1  0.329  0.333  0.279  1.0
  Mn  Mn1  1  0.643  0.681  0.746  1.0
  Na  Na2  1  0.010  0.879  0.809  1.0
  Na  Na3  1  0.970  0.047  0.263  1.0
  Na  Na4  1  0.647  0.281  0.584  1.0
  Na  Na5  1  0.015  0.663  0.546  1.0
  Na  Na6  1  0.261  0.099  0.578  1.0
  Na  Na7  1  0.980  0.696  0.090  1.0
  Na  Na8  1  0.077  0.296  0.910  1.0
  Na  Na9  1  0.646  0.339  0.033  1.0
  Na  Na10  1  0.391  0.930  0.082  1.0
  Na  Na11  1  0.458  0.699  0.399  1.0
  O  O12  1  0.007  0.015  0.018  1.0
  O  O13  1  0.606  0.325  0.340  1.0
  O  O14  1  0.313  0.315  0.090  1.0
  O  O15  1  0.119  0.639  0.323  1.0
  O  O16  1  0.305  0.076  0.334  1.0
  O  O17  1  0.664  0.928  0.669  1.0
  O  O18  1  0.910  0.412  0.684  1.0
  O  O19  1  0.703  0.643  0.933  1.0
  O  O20  1  0.363  0.715  0.655  1.0
[/CIF]
.
The material described by Na10Mn2O9 is Aluminum carbonitride-like structured and crystallizes in the triclinic P1 space group. There are ten inequivalent Na sites. In the first Na site, Na(1) is bonded in a trigonal planar geometry to one O(1), one O(6), and one O(9) atom. In the second Na site, Na(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(6)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the third Na site, Na(3) is bonded to one O(2), one O(6), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra, corners with three equivalent Na(4)O4 tetrahedra, corners with three equivalent Na(5)O4 tetrahedra,  an edgeedge with one Mn(2)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the fourth Na site, Na(4) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra, corners with three equivalent Na(3)O4 tetrahedra, corners with three equivalent Na(5)O4 tetrahedra,  an edgeedge with one Mn(2)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the fifth Na site, Na(5) is bonded to one O(5), one O(6), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra, corners with three equivalent Na(3)O4 tetrahedra, corners with three equivalent Na(4)O4 tetrahedra,  an edgeedge with one Mn(2)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the sixth Na site, Na(6) is bonded to one O(1), one O(3), one O(4), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(2)O4 tetrahedra,  an edgeedge with one Na(7)O4 tetrahedra, and  an edgeedge with one Mn(1)O4 tetrahedra. In the seventh Na site, Na(7) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  an edgeedge with one Na(6)O4 tetrahedra, and  an edgeedge with one Mn(2)O4 tetrahedra. In the eighth Na site, Na(8) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(8) atom. In the ninth Na site, Na(9) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(5), and one O(8) atom. In the tenth Na site, Na(10) is bonded to one O(2), one O(4), one O(5), and one O(9) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(2)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  an edgeedge with one Na(2)O4 tetrahedra,  an edgeedge with one Na(3)O4 tetrahedra,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Na(5)O4 tetrahedra, and  an edgeedge with one Mn(1)O4 tetrahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form MnO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(7)O4 tetrahedra, corners with three equivalent Na(2)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(6)O4 tetrahedra, and  an edgeedge with one Na(10)O4 trigonal pyramid. In the second Mn site, Mn(2) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form MnO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Na(10)O4 trigonal pyramid,  an edgeedge with one Na(3)O4 tetrahedra,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Na(5)O4 tetrahedra, and  an edgeedge with one Na(7)O4 tetrahedra. There are nine inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(6), one Na(7), one Na(8), and one Na(9) atom to form a mixture of distorted corner and edge-sharing ONa6 octahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(10), one Na(2), one Na(3), and one Mn(1) atom. In the third O site, O(3) is bonded to one Na(6), one Na(7), one Na(8), one Na(9), and one Mn(1) atom to form distorted ONa4Mn trigonal bipyramids that share corners with two equivalent O(1)Na6 octahedra,  a cornercorner with one O(7)Na4Mn trigonal bipyramid,  an edgeedge with one O(1)Na6 octahedra, and  an edgeedge with one O(4)Na4Mn trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-60°. In the fourth O site, O(4) is bonded to one Na(10), one Na(2), one Na(4), one Na(6), and one Mn(1) atom to form distorted ONa4Mn trigonal bipyramids that share  a cornercorner with one O(6)Na4Mn trigonal bipyramid,  a cornercorner with one O(7)Na4Mn trigonal bipyramid,  an edgeedge with one O(1)Na6 octahedra, and  an edgeedge with one O(3)Na4Mn trigonal bipyramid. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(10), one Na(2), one Na(5), one Na(9), and one Mn(1) atom. In the sixth O site, O(6) is bonded to one Na(1), one Na(3), one Na(4), one Na(5), and one Mn(2) atom to form distorted ONa4Mn trigonal bipyramids that share  a cornercorner with one O(1)Na6 octahedra,  a cornercorner with one O(4)Na4Mn trigonal bipyramid, corners with two equivalent O(7)Na4Mn trigonal bipyramids, and  an edgeedge with one O(7)Na4Mn trigonal bipyramid. The corner-sharing octahedral tilt angles are 52°. In the seventh O site, O(7) is bonded to one Na(3), one Na(4), one Na(5), one Na(7), and one Mn(2) atom to form ONa4Mn trigonal bipyramids that share  a cornercorner with one O(1)Na6 octahedra,  a cornercorner with one O(3)Na4Mn trigonal bipyramid,  a cornercorner with one O(4)Na4Mn trigonal bipyramid, corners with two equivalent O(6)Na4Mn trigonal bipyramids, and  an edgeedge with one O(6)Na4Mn trigonal bipyramid. The corner-sharing octahedral tilt angles are 64°. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Na(6), one Na(7), one Na(8), one Na(9), and one Mn(2) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Na(1), one Na(10), one Na(3), one Na(4), one Na(5), and one Mn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na10Mn2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.225
_cell_length_b   6.527
_cell_length_c   9.499
_cell_angle_alpha   89.373
_cell_angle_beta   89.777
_cell_angle_gamma   61.556
_symmetry_Int_Tables_number   1
_cell_volume   339.316
_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
  Mn  Mn0  1  0.329  0.333  0.279  1.0
  Mn  Mn1  1  0.643  0.681  0.746  1.0
  Na  Na2  1  0.010  0.879  0.809  1.0
  Na  Na3  1  0.970  0.047  0.263  1.0
  Na  Na4  1  0.647  0.281  0.584  1.0
  Na  Na5  1  0.015  0.663  0.546  1.0
  Na  Na6  1  0.261  0.099  0.578  1.0
  Na  Na7  1  0.980  0.696  0.090  1.0
  Na  Na8  1  0.077  0.296  0.910  1.0
  Na  Na9  1  0.646  0.339  0.033  1.0
  Na  Na10  1  0.391  0.930  0.082  1.0
  Na  Na11  1  0.458  0.699  0.399  1.0
  O  O12  1  0.007  0.015  0.018  1.0
  O  O13  1  0.606  0.325  0.340  1.0
  O  O14  1  0.313  0.315  0.090  1.0
  O  O15  1  0.119  0.639  0.323  1.0
  O  O16  1  0.305  0.076  0.334  1.0
  O  O17  1  0.664  0.928  0.669  1.0
  O  O18  1  0.910  0.412  0.684  1.0
  O  O19  1  0.703  0.643  0.933  1.0
  O  O20  1  0.363  0.715  0.655  1.0
[/CIF]
.