The structure described by MgTa4Nb4Mn4O24 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(15), one O(18), one O(2), and one O(7) atom to form distorted MgO6 octahedra that share corners with two equivalent Ta(4)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, edges with two equivalent Ta(3)O6 octahedra, edges with two equivalent Nb(2)O6 octahedra, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 43-58°. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(13), one O(20), one O(21), one O(3), one O(5), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-57°. In the second Ta site, Ta(2) is bonded to one O(14), one O(19), one O(22), one O(4), one O(5), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and corners with two equivalent Mn(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 45-54°. In the third Ta site, Ta(3) is bonded to one O(1), one O(15), one O(18), one O(23), one O(7), and one O(8) atom to form TaO6 octahedra that share corners with two equivalent Ta(4)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one Mn(2)O5 trigonal bipyramid, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-52°. In the fourth Ta site, Ta(4) is bonded to one O(16), one O(17), one O(2), one O(24), one O(7), and one O(8) atom to form distorted TaO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-56°. There are four inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 5-coordinate geometry to one O(1), one O(17), one O(2), one O(24), one O(7), and one O(9) atom. In the second Nb site, Nb(2) is bonded to one O(1), one O(10), one O(18), one O(2), one O(23), and one O(8) atom to form NbO6 octahedra that share corners with two equivalent Ta(4)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Mn(2)O5 trigonal bipyramids, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one O(11), one O(19), one O(22), one O(3), one O(4), and one O(5) atom. In the fourth Nb site, Nb(4) is bonded in a 6-coordinate geometry to one O(12), one O(20), one O(21), one O(3), one O(4), and one O(6) atom. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(12), one O(13), one O(16), one O(17), one O(20), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. In the second Mn site, Mn(2) is bonded to one O(10), one O(11), one O(14), one O(18), and one O(19) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Ta(3)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-78°. In the third Mn site, Mn(3) is bonded to one O(12), one O(13), one O(16), one O(21), one O(24), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(11), one O(14), one O(15), one O(22), and one O(23) atom to form distorted MnO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Mn(2)O5 trigonal bipyramid, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-58°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Ta(3), one Nb(1), and one Nb(2) atom to form OMgTaNb2 trigonal pyramids that share  a cornercorner with one O(18)MgTaMnNb trigonal pyramid,  a cornercorner with one O(2)MgTaNb2 trigonal pyramid,  an edgeedge with one O(10)MgMn2Nb trigonal pyramid,  an edgeedge with one O(18)MgTaMnNb trigonal pyramid, and  an edgeedge with one O(2)MgTaNb2 trigonal pyramid. In the second O site, O(2) is bonded to one Mg(1), one Ta(4), one Nb(1), and one Nb(2) atom to form distorted OMgTaNb2 trigonal pyramids that share  a cornercorner with one O(1)MgTaNb2 trigonal pyramid, corners with two equivalent O(10)MgMn2Nb trigonal pyramids,  an edgeedge with one O(18)MgTaMnNb trigonal pyramid, and  an edgeedge with one O(1)MgTaNb2 trigonal pyramid. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ta(1), one Nb(3), and one Nb(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ta(2), one Nb(3), and one Nb(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Nb(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Nb(4) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ta(3), one Ta(4), and one Nb(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(3), one Ta(4), and one Nb(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(1), and one Mn(3) atom. In the tenth O site, O(10) is bonded to one Mg(1), one Nb(2), one Mn(2), and one Mn(4) atom to form distorted OMgMn2Nb trigonal pyramids that share  a cornercorner with one O(18)MgTaMnNb trigonal pyramid, corners with two equivalent O(2)MgTaNb2 trigonal pyramids,  an edgeedge with one O(18)MgTaMnNb trigonal pyramid, and  an edgeedge with one O(1)MgTaNb2 trigonal pyramid. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Nb(3), one Mn(2), and one Mn(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Nb(4), one Mn(1), and one Mn(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Ta(1), one Mn(1), and one Mn(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Ta(2), one Mn(2), and one Mn(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Mg(1), one Ta(3), and one Mn(4) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Ta(4), one Mn(1), and one Mn(3) atom. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to one Ta(4), one Nb(1), and one Mn(1) atom. In the eighteenth O site, O(18) is bonded to one Mg(1), one Ta(3), one Nb(2), and one Mn(2) atom to form distorted OMgTaMnNb trigonal pyramids that share  a cornercorner with one O(10)MgMn2Nb trigonal pyramid,  a cornercorner with one O(1)MgTaNb2 trigonal pyramid,  an edgeedge with one O(10)MgMn2Nb trigonal pyramid,  an edgeedge with one O(1)MgTaNb2 trigonal pyramid, and  an edgeedge with one O(2)MgTaNb2 trigonal pyramid. In the nineteenth O site, O(19) is bonded in a trigonal planar geometry to one Ta(2), one Nb(3), and one Mn(2) atom. In the twentieth O site, O(20) is bonded in a trigonal planar geometry to one Ta(1), one Nb(4), and one Mn(1) atom. In the twenty-first O site, O(21) is bonded in a trigonal planar geometry to one Ta(1), one Nb(4), and one Mn(3) atom. In the twenty-second O site, O(22) is bonded in a trigonal planar geometry to one Ta(2), one Nb(3), and one Mn(4) atom. In the twenty-third O site, O(23) is bonded in a distorted water-like geometry to one Ta(3), one Nb(2), and one Mn(4) atom. In the twenty-fourth O site, O(24) is bonded in a trigonal planar geometry to one Ta(4), one Nb(1), and one Mn(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgTa4Mn4Nb4O24
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.158
_cell_length_b   5.995
_cell_length_c   14.860
_cell_angle_alpha   88.292
_cell_angle_beta   91.788
_cell_angle_gamma   89.808
_symmetry_Int_Tables_number   1
_cell_volume   459.103
_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
  Mg  Mg0  1  0.770  0.446  0.658  1.0
  Ta  Ta1  1  0.276  0.652  0.163  1.0
  Ta  Ta2  1  0.790  0.795  0.331  1.0
  Ta  Ta3  1  0.699  0.918  0.672  1.0
  Ta  Ta4  1  0.214  0.685  0.838  1.0
  Mn  Mn5  1  0.245  0.156  0.003  1.0
  Mn  Mn6  1  0.818  0.282  0.481  1.0
  Mn  Mn7  1  0.748  0.814  0.003  1.0
  Mn  Mn8  1  0.275  0.642  0.500  1.0
  Nb  Nb9  1  0.714  0.337  0.854  1.0
  Nb  Nb10  1  0.251  0.166  0.668  1.0
  Nb  Nb11  1  0.302  0.152  0.335  1.0
  Nb  Nb12  1  0.779  0.303  0.160  1.0
  O  O13  1  0.881  0.181  0.749  1.0
  O  O14  1  0.416  0.400  0.759  1.0
  O  O15  1  0.115  0.344  0.242  1.0
  O  O16  1  0.619  0.105  0.255  1.0
  O  O17  1  0.106  0.837  0.251  1.0
  O  O18  1  0.606  0.609  0.244  1.0
  O  O19  1  0.902  0.661  0.756  1.0
  O  O20  1  0.408  0.893  0.763  1.0
  O  O21  1  0.587  0.117  0.928  1.0
  O  O22  1  0.080  0.408  0.582  1.0
  O  O23  1  0.436  0.351  0.414  1.0
  O  O24  1  0.910  0.104  0.083  1.0
  O  O25  1  0.407  0.860  0.084  1.0
  O  O26  1  0.934  0.589  0.412  1.0
  O  O27  1  0.580  0.698  0.594  1.0
  O  O28  1  0.083  0.876  0.920  1.0
  O  O29  1  0.057  0.405  0.904  1.0
  O  O30  1  0.585  0.191  0.593  1.0
  O  O31  1  0.983  0.058  0.393  1.0
  O  O32  1  0.448  0.383  0.101  1.0
  O  O33  1  0.949  0.580  0.100  1.0
  O  O34  1  0.479  0.871  0.396  1.0
  O  O35  1  0.051  0.947  0.607  1.0
  O  O36  1  0.547  0.599  0.908  1.0
[/CIF]
.
The structure described by MgTa4Nb4Mn4O24 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(15), one O(18), one O(2), and one O(7) atom to form distorted MgO6 octahedra that share corners with two equivalent Ta(4)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, edges with two equivalent Ta(3)O6 octahedra, edges with two equivalent Nb(2)O6 octahedra, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 43-58°. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(13), one O(20), one O(21), one O(3), one O(5), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-57°. In the second Ta site, Ta(2) is bonded to one O(14), one O(19), one O(22), one O(4), one O(5), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and corners with two equivalent Mn(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 45-54°. In the third Ta site, Ta(3) is bonded to one O(1), one O(15), one O(18), one O(23), one O(7), and one O(8) atom to form TaO6 octahedra that share corners with two equivalent Ta(4)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one Mn(2)O5 trigonal bipyramid, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-52°. In the fourth Ta site, Ta(4) is bonded to one O(16), one O(17), one O(2), one O(24), one O(7), and one O(8) atom to form distorted TaO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-56°. There are four inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 5-coordinate geometry to one O(1), one O(17), one O(2), one O(24), one O(7), and one O(9) atom. In the second Nb site, Nb(2) is bonded to one O(1), one O(10), one O(18), one O(2), one O(23), and one O(8) atom to form NbO6 octahedra that share corners with two equivalent Ta(4)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Mn(2)O5 trigonal bipyramids, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one O(11), one O(19), one O(22), one O(3), one O(4), and one O(5) atom. In the fourth Nb site, Nb(4) is bonded in a 6-coordinate geometry to one O(12), one O(20), one O(21), one O(3), one O(4), and one O(6) atom. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(12), one O(13), one O(16), one O(17), one O(20), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. In the second Mn site, Mn(2) is bonded to one O(10), one O(11), one O(14), one O(18), and one O(19) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Ta(3)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-78°. In the third Mn site, Mn(3) is bonded to one O(12), one O(13), one O(16), one O(21), one O(24), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(11), one O(14), one O(15), one O(22), and one O(23) atom to form distorted MnO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Mn(2)O5 trigonal bipyramid, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-58°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Ta(3), one Nb(1), and one Nb(2) atom to form OMgTaNb2 trigonal pyramids that share  a cornercorner with one O(18)MgTaMnNb trigonal pyramid,  a cornercorner with one O(2)MgTaNb2 trigonal pyramid,  an edgeedge with one O(10)MgMn2Nb trigonal pyramid,  an edgeedge with one O(18)MgTaMnNb trigonal pyramid, and  an edgeedge with one O(2)MgTaNb2 trigonal pyramid. In the second O site, O(2) is bonded to one Mg(1), one Ta(4), one Nb(1), and one Nb(2) atom to form distorted OMgTaNb2 trigonal pyramids that share  a cornercorner with one O(1)MgTaNb2 trigonal pyramid, corners with two equivalent O(10)MgMn2Nb trigonal pyramids,  an edgeedge with one O(18)MgTaMnNb trigonal pyramid, and  an edgeedge with one O(1)MgTaNb2 trigonal pyramid. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ta(1), one Nb(3), and one Nb(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ta(2), one Nb(3), and one Nb(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Nb(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Nb(4) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ta(3), one Ta(4), and one Nb(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(3), one Ta(4), and one Nb(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(1), and one Mn(3) atom. In the tenth O site, O(10) is bonded to one Mg(1), one Nb(2), one Mn(2), and one Mn(4) atom to form distorted OMgMn2Nb trigonal pyramids that share  a cornercorner with one O(18)MgTaMnNb trigonal pyramid, corners with two equivalent O(2)MgTaNb2 trigonal pyramids,  an edgeedge with one O(18)MgTaMnNb trigonal pyramid, and  an edgeedge with one O(1)MgTaNb2 trigonal pyramid. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Nb(3), one Mn(2), and one Mn(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Nb(4), one Mn(1), and one Mn(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Ta(1), one Mn(1), and one Mn(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Ta(2), one Mn(2), and one Mn(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Mg(1), one Ta(3), and one Mn(4) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Ta(4), one Mn(1), and one Mn(3) atom. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to one Ta(4), one Nb(1), and one Mn(1) atom. In the eighteenth O site, O(18) is bonded to one Mg(1), one Ta(3), one Nb(2), and one Mn(2) atom to form distorted OMgTaMnNb trigonal pyramids that share  a cornercorner with one O(10)MgMn2Nb trigonal pyramid,  a cornercorner with one O(1)MgTaNb2 trigonal pyramid,  an edgeedge with one O(10)MgMn2Nb trigonal pyramid,  an edgeedge with one O(1)MgTaNb2 trigonal pyramid, and  an edgeedge with one O(2)MgTaNb2 trigonal pyramid. In the nineteenth O site, O(19) is bonded in a trigonal planar geometry to one Ta(2), one Nb(3), and one Mn(2) atom. In the twentieth O site, O(20) is bonded in a trigonal planar geometry to one Ta(1), one Nb(4), and one Mn(1) atom. In the twenty-first O site, O(21) is bonded in a trigonal planar geometry to one Ta(1), one Nb(4), and one Mn(3) atom. In the twenty-second O site, O(22) is bonded in a trigonal planar geometry to one Ta(2), one Nb(3), and one Mn(4) atom. In the twenty-third O site, O(23) is bonded in a distorted water-like geometry to one Ta(3), one Nb(2), and one Mn(4) atom. In the twenty-fourth O site, O(24) is bonded in a trigonal planar geometry to one Ta(4), one Nb(1), and one Mn(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgTa4Mn4Nb4O24
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.158
_cell_length_b   5.995
_cell_length_c   14.860
_cell_angle_alpha   88.292
_cell_angle_beta   91.788
_cell_angle_gamma   89.808
_symmetry_Int_Tables_number   1
_cell_volume   459.103
_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
  Mg  Mg0  1  0.770  0.446  0.658  1.0
  Ta  Ta1  1  0.276  0.652  0.163  1.0
  Ta  Ta2  1  0.790  0.795  0.331  1.0
  Ta  Ta3  1  0.699  0.918  0.672  1.0
  Ta  Ta4  1  0.214  0.685  0.838  1.0
  Mn  Mn5  1  0.245  0.156  0.003  1.0
  Mn  Mn6  1  0.818  0.282  0.481  1.0
  Mn  Mn7  1  0.748  0.814  0.003  1.0
  Mn  Mn8  1  0.275  0.642  0.500  1.0
  Nb  Nb9  1  0.714  0.337  0.854  1.0
  Nb  Nb10  1  0.251  0.166  0.668  1.0
  Nb  Nb11  1  0.302  0.152  0.335  1.0
  Nb  Nb12  1  0.779  0.303  0.160  1.0
  O  O13  1  0.881  0.181  0.749  1.0
  O  O14  1  0.416  0.400  0.759  1.0
  O  O15  1  0.115  0.344  0.242  1.0
  O  O16  1  0.619  0.105  0.255  1.0
  O  O17  1  0.106  0.837  0.251  1.0
  O  O18  1  0.606  0.609  0.244  1.0
  O  O19  1  0.902  0.661  0.756  1.0
  O  O20  1  0.408  0.893  0.763  1.0
  O  O21  1  0.587  0.117  0.928  1.0
  O  O22  1  0.080  0.408  0.582  1.0
  O  O23  1  0.436  0.351  0.414  1.0
  O  O24  1  0.910  0.104  0.083  1.0
  O  O25  1  0.407  0.860  0.084  1.0
  O  O26  1  0.934  0.589  0.412  1.0
  O  O27  1  0.580  0.698  0.594  1.0
  O  O28  1  0.083  0.876  0.920  1.0
  O  O29  1  0.057  0.405  0.904  1.0
  O  O30  1  0.585  0.191  0.593  1.0
  O  O31  1  0.983  0.058  0.393  1.0
  O  O32  1  0.448  0.383  0.101  1.0
  O  O33  1  0.949  0.580  0.100  1.0
  O  O34  1  0.479  0.871  0.396  1.0
  O  O35  1  0.051  0.947  0.607  1.0
  O  O36  1  0.547  0.599  0.908  1.0
[/CIF]
.