The crystal structure described by Ta9Mn11O34 crystallizes in the monoclinic Cm space group. There are nine inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(32), and three equivalent O(34) atoms to form TaO5 trigonal bipyramids that share corners with three equivalent Mn(1)O4 tetrahedra,  a cornercorner with one Mn(11)O5 trigonal bipyramid, and corners with six equivalent Ta(1)O5 trigonal bipyramids. In the second Ta site, Ta(2) is bonded to one O(4) and three equivalent O(3) atoms to form distorted TaO4 tetrahedra that share corners with three equivalent Mn(2)O4 tetrahedra, corners with three equivalent Mn(3)O4 tetrahedra, and corners with six equivalent Ta(2)O4 tetrahedra. In the third Ta site, Ta(3) is bonded in a distorted body-centered cubic geometry to one O(11), one O(6), three equivalent O(8), and three equivalent O(9) atoms. In the fourth Ta site, Ta(4) is bonded to one O(7) and three equivalent O(5) atoms to form distorted TaO4 trigonal pyramids that share corners with three equivalent Mn(3)O4 tetrahedra and corners with six equivalent Ta(4)O4 trigonal pyramids. In the fifth Ta site, Ta(5) is bonded in a 6-coordinate geometry to three equivalent O(6) and three equivalent O(7) atoms. In the sixth Ta site, Ta(6) is bonded in a body-centered cubic geometry to one O(10), one O(15), three equivalent O(12), and three equivalent O(13) atoms. In the seventh Ta site, Ta(7) is bonded in a body-centered cubic geometry to one O(13), one O(8), three equivalent O(10), and three equivalent O(11) atoms. In the eighth Ta site, Ta(8) is bonded in a 8-coordinate geometry to one O(12), one O(17), three equivalent O(14), and three equivalent O(15) atoms. In the ninth Ta site, Ta(9) is bonded in a body-centered cubic geometry to one O(16), one O(21), three equivalent O(18), and three equivalent O(19) atoms. There are eleven inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2) and three equivalent O(1) atoms to form MnO4 tetrahedra that share corners with three equivalent Mn(2)O4 tetrahedra, corners with six equivalent Mn(1)O4 tetrahedra, and corners with three equivalent Ta(1)O5 trigonal bipyramids. In the second Mn site, Mn(2) is bonded to one O(3) and three equivalent O(2) atoms to form MnO4 tetrahedra that share corners with three equivalent Ta(2)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra, and corners with six equivalent Mn(2)O4 tetrahedra. In the third Mn site, Mn(3) is bonded to one O(5) and three equivalent O(4) atoms to form MnO4 tetrahedra that share corners with three equivalent Ta(2)O4 tetrahedra, corners with six equivalent Mn(3)O4 tetrahedra, and corners with three equivalent Ta(4)O4 trigonal pyramids. In the fourth Mn site, Mn(4) is bonded in a body-centered cubic geometry to one O(18), one O(23), three equivalent O(20), and three equivalent O(21) atoms. In the fifth Mn site, Mn(5) is bonded in a 7-coordinate geometry to one O(19), three equivalent O(16), and three equivalent O(17) atoms. In the sixth Mn site, Mn(6) is bonded in a body-centered cubic geometry to one O(20), one O(25), three equivalent O(22), and three equivalent O(23) atoms. In the seventh Mn site, Mn(7) is bonded in a body-centered cubic geometry to one O(22), one O(27), three equivalent O(24), and three equivalent O(25) atoms. In the eighth Mn site, Mn(8) is bonded in a distorted body-centered cubic geometry to one O(28), one O(33), three equivalent O(30), and three equivalent O(31) atoms. In the ninth Mn site, Mn(9) is bonded in a body-centered cubic geometry to one O(24), one O(29), three equivalent O(26), and three equivalent O(27) atoms. In the tenth Mn site, Mn(10) is bonded in a body-centered cubic geometry to one O(26), one O(31), three equivalent O(28), and three equivalent O(29) atoms. In the eleventh Mn site, Mn(11) is bonded to one O(30), one O(32), and three equivalent O(33) atoms to form MnO5 trigonal bipyramids that share  a cornercorner with one Ta(1)O5 trigonal bipyramid and corners with six equivalent Mn(11)O5 trigonal bipyramids. There are thirty-four inequivalent O sites. In the first O site, O(1) is bonded to one Ta(1) and three equivalent Mn(1) atoms to form OTaMn3 tetrahedra that share corners with three equivalent O(2)Mn4 tetrahedra and corners with six equivalent O(1)TaMn3 tetrahedra. In the second O site, O(2) is bonded to one Mn(1) and three equivalent Mn(2) atoms to form OMn4 tetrahedra that share corners with three equivalent O(3)Ta3Mn tetrahedra, corners with three equivalent O(1)TaMn3 tetrahedra, and corners with six equivalent O(2)Mn4 tetrahedra. In the third O site, O(3) is bonded to three equivalent Ta(2) and one Mn(2) atom to form distorted OTa3Mn tetrahedra that share corners with three equivalent O(2)Mn4 tetrahedra, corners with three equivalent O(4)TaMn3 tetrahedra, and corners with six equivalent O(3)Ta3Mn tetrahedra. In the fourth O site, O(4) is bonded to one Ta(2) and three equivalent Mn(3) atoms to form OTaMn3 tetrahedra that share corners with three equivalent O(3)Ta3Mn tetrahedra, corners with six equivalent O(4)TaMn3 tetrahedra, and corners with three equivalent O(5)Ta3Mn trigonal pyramids. In the fifth O site, O(5) is bonded to three equivalent Ta(4) and one Mn(3) atom to form distorted OTa3Mn trigonal pyramids that share corners with three equivalent O(7)Ta4 tetrahedra, corners with three equivalent O(4)TaMn3 tetrahedra, and corners with six equivalent O(5)Ta3Mn trigonal pyramids. In the sixth O site, O(6) is bonded to one Ta(3) and three equivalent Ta(5) atoms to form a mixture of distorted edge and corner-sharing OTa4 trigonal pyramids. In the seventh O site, O(7) is bonded to one Ta(4) and three equivalent Ta(5) atoms to form OTa4 tetrahedra that share corners with six equivalent O(7)Ta4 tetrahedra, corners with three equivalent O(5)Ta3Mn trigonal pyramids, corners with three equivalent O(6)Ta4 trigonal pyramids, and edges with three equivalent O(6)Ta4 trigonal pyramids. In the eighth O site, O(8) is bonded to one Ta(7) and three equivalent Ta(3) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to three equivalent Ta(3) atoms. In the tenth O site, O(10) is bonded to one Ta(6) and three equivalent Ta(7) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the eleventh O site, O(11) is bonded to one Ta(3) and three equivalent Ta(7) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Ta(8) and three equivalent Ta(6) atoms. In the thirteenth O site, O(13) is bonded to one Ta(7) and three equivalent Ta(6) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to three equivalent Ta(8) atoms. In the fifteenth O site, O(15) is bonded to one Ta(6) and three equivalent Ta(8) atoms to form distorted corner-sharing OTa4 tetrahedra. In the sixteenth O site, O(16) is bonded to one Ta(9) and three equivalent Mn(5) atoms to form OTaMn3 tetrahedra that share  a cornercorner with one O(21)TaMn3 tetrahedra, corners with three equivalent O(18)Ta3Mn tetrahedra, corners with six equivalent O(16)TaMn3 tetrahedra, and edges with three equivalent O(19)Ta3Mn tetrahedra. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to one Ta(8) and three equivalent Mn(5) atoms. In the eighteenth O site, O(18) is bonded to three equivalent Ta(9) and one Mn(4) atom to form OTa3Mn tetrahedra that share  a cornercorner with one O(23)Mn4 tetrahedra, corners with three equivalent O(20)Mn4 tetrahedra, corners with three equivalent O(19)Ta3Mn tetrahedra, corners with three equivalent O(16)TaMn3 tetrahedra, corners with six equivalent O(18)Ta3Mn tetrahedra, edges with three equivalent O(19)Ta3Mn tetrahedra, and edges with three equivalent O(21)TaMn3 tetrahedra. In the nineteenth O site, O(19) is bonded to three equivalent Ta(9) and one Mn(5) atom to form OTa3Mn tetrahedra that share corners with three equivalent O(18)Ta3Mn tetrahedra, corners with three equivalent O(21)TaMn3 tetrahedra, corners with six equivalent O(19)Ta3Mn tetrahedra, edges with three equivalent O(18)Ta3Mn tetrahedra, and edges with three equivalent O(16)TaMn3 tetrahedra. In the twentieth O site, O(20) is bonded to one Mn(6) and three equivalent Mn(4) atoms to form OMn4 tetrahedra that share  a cornercorner with one O(25)Mn4 tetrahedra, corners with three equivalent O(22)Mn4 tetrahedra, corners with three equivalent O(18)Ta3Mn tetrahedra, corners with three equivalent O(21)TaMn3 tetrahedra, corners with six equivalent O(20)Mn4 tetrahedra, edges with three equivalent O(23)Mn4 tetrahedra, and edges with three equivalent O(21)TaMn3 tetrahedra. In the twenty-first O site, O(21) is bonded to one Ta(9) and three equivalent Mn(4) atoms to form OTaMn3 tetrahedra that share  a cornercorner with one O(16)TaMn3 tetrahedra, corners with three equivalent O(20)Mn4 tetrahedra, corners with three equivalent O(23)Mn4 tetrahedra, corners with three equivalent O(19)Ta3Mn tetrahedra, corners with six equivalent O(21)TaMn3 tetrahedra, edges with three equivalent O(20)Mn4 tetrahedra, and edges with three equivalent O(18)Ta3Mn tetrahedra. In the twenty-second O site, O(22) is bonded to one Mn(7) and three equivalent Mn(6) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-third O site, O(23) is bonded to one Mn(4) and three equivalent Mn(6) atoms to form OMn4 tetrahedra that share  a cornercorner with one O(18)Ta3Mn tetrahedra, corners with three equivalent O(22)Mn4 tetrahedra, corners with three equivalent O(25)Mn4 tetrahedra, corners with three equivalent O(21)TaMn3 tetrahedra, corners with six equivalent O(23)Mn4 tetrahedra, edges with three equivalent O(20)Mn4 tetrahedra, and edges with three equivalent O(22)Mn4 tetrahedra. In the twenty-fourth O site, O(24) is bonded to one Mn(9) and three equivalent Mn(7) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-fifth O site, O(25) is bonded to one Mn(6) and three equivalent Mn(7) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-sixth O site, O(26) is bonded to one Mn(10) and three equivalent Mn(9) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-seventh O site, O(27) is bonded to one Mn(7) and three equivalent Mn(9) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-eighth O site, O(28) is bonded to one Mn(8) and three equivalent Mn(10) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-ninth O site, O(29) is bonded to one Mn(9) and three equivalent Mn(10) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the thirtieth O site, O(30) is bonded to one Mn(11) and three equivalent Mn(8) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the thirty-first O site, O(31) is bonded to one Mn(10) and three equivalent Mn(8) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the thirty-second O site, O(32) is bonded in a distorted bent 150 degrees geometry to one Ta(1) and one Mn(11) atom. In the thirty-third O site, O(33) is bonded in a 3-coordinate geometry to one Mn(8) and three equivalent Mn(11) atoms. In the thirty-fourth O site, O(34) is bonded in a trigonal planar geometry to three equivalent Ta(1) atoms. is represented by the CIF file [CIF]
data_Ta9Mn11O34
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.476
_cell_length_b   3.476
_cell_length_c   70.142
_cell_angle_alpha   61.836
_cell_angle_beta   61.836
_cell_angle_gamma   60.614
_symmetry_Int_Tables_number   1
_cell_volume   618.214
_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
  Ta  Ta0  1  0.932  0.932  0.003  1.0
  Ta  Ta1  1  0.952  0.952  0.154  1.0
  Ta  Ta2  1  0.033  0.033  0.344  1.0
  Ta  Ta3  1  0.062  0.062  0.251  1.0
  Ta  Ta4  1  0.048  0.048  0.289  1.0
  Ta  Ta5  1  0.003  0.003  0.449  1.0
  Ta  Ta6  1  0.018  0.018  0.397  1.0
  Ta  Ta7  1  0.990  0.990  0.502  1.0
  Ta  Ta8  1  0.968  0.968  0.606  1.0
  Mn  Mn9  1  0.964  0.964  0.051  1.0
  Mn  Mn10  1  0.996  0.996  0.099  1.0
  Mn  Mn11  1  0.021  0.021  0.196  1.0
  Mn  Mn12  1  0.960  0.960  0.656  1.0
  Mn  Mn13  1  0.940  0.940  0.558  1.0
  Mn  Mn14  1  0.973  0.973  0.704  1.0
  Mn  Mn15  1  0.992  0.992  0.751  1.0
  Mn  Mn16  1  0.061  0.061  0.893  1.0
  Mn  Mn17  1  0.010  0.010  0.798  1.0
  Mn  Mn18  1  0.030  0.030  0.846  1.0
  Mn  Mn19  1  0.149  0.149  0.940  1.0
  O  O20  1  0.698  0.698  0.040  1.0
  O  O21  1  0.735  0.735  0.087  1.0
  O  O22  1  0.749  0.749  0.135  1.0
  O  O23  1  0.734  0.734  0.188  1.0
  O  O24  1  0.781  0.781  0.232  1.0
  O  O25  1  0.256  0.256  0.310  1.0
  O  O26  1  0.745  0.745  0.284  1.0
  O  O27  1  0.256  0.256  0.361  1.0
  O  O28  1  0.735  0.735  0.338  1.0
  O  O29  1  0.265  0.265  0.410  1.0
  O  O30  1  0.756  0.756  0.386  1.0
  O  O31  1  0.288  0.288  0.457  1.0
  O  O32  1  0.771  0.771  0.434  1.0
  O  O33  1  0.305  0.305  0.505  1.0
  O  O34  1  0.774  0.774  0.484  1.0
  O  O35  1  0.204  0.204  0.569  1.0
  O  O36  1  0.790  0.790  0.533  1.0
  O  O37  1  0.239  0.239  0.615  1.0
  O  O38  1  0.695  0.695  0.596  1.0
  O  O39  1  0.200  0.200  0.669  1.0
  O  O40  1  0.741  0.741  0.641  1.0
  O  O41  1  0.226  0.226  0.716  1.0
  O  O42  1  0.711  0.711  0.693  1.0
  O  O43  1  0.244  0.244  0.763  1.0
  O  O44  1  0.740  0.740  0.739  1.0
  O  O45  1  0.262  0.262  0.810  1.0
  O  O46  1  0.758  0.758  0.787  1.0
  O  O47  1  0.291  0.291  0.857  1.0
  O  O48  1  0.776  0.776  0.834  1.0
  O  O49  1  0.310  0.310  0.908  1.0
  O  O50  1  0.803  0.803  0.882  1.0
  O  O51  1  0.091  0.091  0.973  1.0
  O  O52  1  0.784  0.784  0.939  1.0
  O  O53  1  0.579  0.579  0.006  1.0
[/CIF]
.
The crystal structure described by Ta9Mn11O34 crystallizes in the monoclinic Cm space group. There are nine inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(32), and three equivalent O(34) atoms to form TaO5 trigonal bipyramids that share corners with three equivalent Mn(1)O4 tetrahedra,  a cornercorner with one Mn(11)O5 trigonal bipyramid, and corners with six equivalent Ta(1)O5 trigonal bipyramids. In the second Ta site, Ta(2) is bonded to one O(4) and three equivalent O(3) atoms to form distorted TaO4 tetrahedra that share corners with three equivalent Mn(2)O4 tetrahedra, corners with three equivalent Mn(3)O4 tetrahedra, and corners with six equivalent Ta(2)O4 tetrahedra. In the third Ta site, Ta(3) is bonded in a distorted body-centered cubic geometry to one O(11), one O(6), three equivalent O(8), and three equivalent O(9) atoms. In the fourth Ta site, Ta(4) is bonded to one O(7) and three equivalent O(5) atoms to form distorted TaO4 trigonal pyramids that share corners with three equivalent Mn(3)O4 tetrahedra and corners with six equivalent Ta(4)O4 trigonal pyramids. In the fifth Ta site, Ta(5) is bonded in a 6-coordinate geometry to three equivalent O(6) and three equivalent O(7) atoms. In the sixth Ta site, Ta(6) is bonded in a body-centered cubic geometry to one O(10), one O(15), three equivalent O(12), and three equivalent O(13) atoms. In the seventh Ta site, Ta(7) is bonded in a body-centered cubic geometry to one O(13), one O(8), three equivalent O(10), and three equivalent O(11) atoms. In the eighth Ta site, Ta(8) is bonded in a 8-coordinate geometry to one O(12), one O(17), three equivalent O(14), and three equivalent O(15) atoms. In the ninth Ta site, Ta(9) is bonded in a body-centered cubic geometry to one O(16), one O(21), three equivalent O(18), and three equivalent O(19) atoms. There are eleven inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2) and three equivalent O(1) atoms to form MnO4 tetrahedra that share corners with three equivalent Mn(2)O4 tetrahedra, corners with six equivalent Mn(1)O4 tetrahedra, and corners with three equivalent Ta(1)O5 trigonal bipyramids. In the second Mn site, Mn(2) is bonded to one O(3) and three equivalent O(2) atoms to form MnO4 tetrahedra that share corners with three equivalent Ta(2)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra, and corners with six equivalent Mn(2)O4 tetrahedra. In the third Mn site, Mn(3) is bonded to one O(5) and three equivalent O(4) atoms to form MnO4 tetrahedra that share corners with three equivalent Ta(2)O4 tetrahedra, corners with six equivalent Mn(3)O4 tetrahedra, and corners with three equivalent Ta(4)O4 trigonal pyramids. In the fourth Mn site, Mn(4) is bonded in a body-centered cubic geometry to one O(18), one O(23), three equivalent O(20), and three equivalent O(21) atoms. In the fifth Mn site, Mn(5) is bonded in a 7-coordinate geometry to one O(19), three equivalent O(16), and three equivalent O(17) atoms. In the sixth Mn site, Mn(6) is bonded in a body-centered cubic geometry to one O(20), one O(25), three equivalent O(22), and three equivalent O(23) atoms. In the seventh Mn site, Mn(7) is bonded in a body-centered cubic geometry to one O(22), one O(27), three equivalent O(24), and three equivalent O(25) atoms. In the eighth Mn site, Mn(8) is bonded in a distorted body-centered cubic geometry to one O(28), one O(33), three equivalent O(30), and three equivalent O(31) atoms. In the ninth Mn site, Mn(9) is bonded in a body-centered cubic geometry to one O(24), one O(29), three equivalent O(26), and three equivalent O(27) atoms. In the tenth Mn site, Mn(10) is bonded in a body-centered cubic geometry to one O(26), one O(31), three equivalent O(28), and three equivalent O(29) atoms. In the eleventh Mn site, Mn(11) is bonded to one O(30), one O(32), and three equivalent O(33) atoms to form MnO5 trigonal bipyramids that share  a cornercorner with one Ta(1)O5 trigonal bipyramid and corners with six equivalent Mn(11)O5 trigonal bipyramids. There are thirty-four inequivalent O sites. In the first O site, O(1) is bonded to one Ta(1) and three equivalent Mn(1) atoms to form OTaMn3 tetrahedra that share corners with three equivalent O(2)Mn4 tetrahedra and corners with six equivalent O(1)TaMn3 tetrahedra. In the second O site, O(2) is bonded to one Mn(1) and three equivalent Mn(2) atoms to form OMn4 tetrahedra that share corners with three equivalent O(3)Ta3Mn tetrahedra, corners with three equivalent O(1)TaMn3 tetrahedra, and corners with six equivalent O(2)Mn4 tetrahedra. In the third O site, O(3) is bonded to three equivalent Ta(2) and one Mn(2) atom to form distorted OTa3Mn tetrahedra that share corners with three equivalent O(2)Mn4 tetrahedra, corners with three equivalent O(4)TaMn3 tetrahedra, and corners with six equivalent O(3)Ta3Mn tetrahedra. In the fourth O site, O(4) is bonded to one Ta(2) and three equivalent Mn(3) atoms to form OTaMn3 tetrahedra that share corners with three equivalent O(3)Ta3Mn tetrahedra, corners with six equivalent O(4)TaMn3 tetrahedra, and corners with three equivalent O(5)Ta3Mn trigonal pyramids. In the fifth O site, O(5) is bonded to three equivalent Ta(4) and one Mn(3) atom to form distorted OTa3Mn trigonal pyramids that share corners with three equivalent O(7)Ta4 tetrahedra, corners with three equivalent O(4)TaMn3 tetrahedra, and corners with six equivalent O(5)Ta3Mn trigonal pyramids. In the sixth O site, O(6) is bonded to one Ta(3) and three equivalent Ta(5) atoms to form a mixture of distorted edge and corner-sharing OTa4 trigonal pyramids. In the seventh O site, O(7) is bonded to one Ta(4) and three equivalent Ta(5) atoms to form OTa4 tetrahedra that share corners with six equivalent O(7)Ta4 tetrahedra, corners with three equivalent O(5)Ta3Mn trigonal pyramids, corners with three equivalent O(6)Ta4 trigonal pyramids, and edges with three equivalent O(6)Ta4 trigonal pyramids. In the eighth O site, O(8) is bonded to one Ta(7) and three equivalent Ta(3) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to three equivalent Ta(3) atoms. In the tenth O site, O(10) is bonded to one Ta(6) and three equivalent Ta(7) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the eleventh O site, O(11) is bonded to one Ta(3) and three equivalent Ta(7) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Ta(8) and three equivalent Ta(6) atoms. In the thirteenth O site, O(13) is bonded to one Ta(7) and three equivalent Ta(6) atoms to form a mixture of edge and corner-sharing OTa4 tetrahedra. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to three equivalent Ta(8) atoms. In the fifteenth O site, O(15) is bonded to one Ta(6) and three equivalent Ta(8) atoms to form distorted corner-sharing OTa4 tetrahedra. In the sixteenth O site, O(16) is bonded to one Ta(9) and three equivalent Mn(5) atoms to form OTaMn3 tetrahedra that share  a cornercorner with one O(21)TaMn3 tetrahedra, corners with three equivalent O(18)Ta3Mn tetrahedra, corners with six equivalent O(16)TaMn3 tetrahedra, and edges with three equivalent O(19)Ta3Mn tetrahedra. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to one Ta(8) and three equivalent Mn(5) atoms. In the eighteenth O site, O(18) is bonded to three equivalent Ta(9) and one Mn(4) atom to form OTa3Mn tetrahedra that share  a cornercorner with one O(23)Mn4 tetrahedra, corners with three equivalent O(20)Mn4 tetrahedra, corners with three equivalent O(19)Ta3Mn tetrahedra, corners with three equivalent O(16)TaMn3 tetrahedra, corners with six equivalent O(18)Ta3Mn tetrahedra, edges with three equivalent O(19)Ta3Mn tetrahedra, and edges with three equivalent O(21)TaMn3 tetrahedra. In the nineteenth O site, O(19) is bonded to three equivalent Ta(9) and one Mn(5) atom to form OTa3Mn tetrahedra that share corners with three equivalent O(18)Ta3Mn tetrahedra, corners with three equivalent O(21)TaMn3 tetrahedra, corners with six equivalent O(19)Ta3Mn tetrahedra, edges with three equivalent O(18)Ta3Mn tetrahedra, and edges with three equivalent O(16)TaMn3 tetrahedra. In the twentieth O site, O(20) is bonded to one Mn(6) and three equivalent Mn(4) atoms to form OMn4 tetrahedra that share  a cornercorner with one O(25)Mn4 tetrahedra, corners with three equivalent O(22)Mn4 tetrahedra, corners with three equivalent O(18)Ta3Mn tetrahedra, corners with three equivalent O(21)TaMn3 tetrahedra, corners with six equivalent O(20)Mn4 tetrahedra, edges with three equivalent O(23)Mn4 tetrahedra, and edges with three equivalent O(21)TaMn3 tetrahedra. In the twenty-first O site, O(21) is bonded to one Ta(9) and three equivalent Mn(4) atoms to form OTaMn3 tetrahedra that share  a cornercorner with one O(16)TaMn3 tetrahedra, corners with three equivalent O(20)Mn4 tetrahedra, corners with three equivalent O(23)Mn4 tetrahedra, corners with three equivalent O(19)Ta3Mn tetrahedra, corners with six equivalent O(21)TaMn3 tetrahedra, edges with three equivalent O(20)Mn4 tetrahedra, and edges with three equivalent O(18)Ta3Mn tetrahedra. In the twenty-second O site, O(22) is bonded to one Mn(7) and three equivalent Mn(6) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-third O site, O(23) is bonded to one Mn(4) and three equivalent Mn(6) atoms to form OMn4 tetrahedra that share  a cornercorner with one O(18)Ta3Mn tetrahedra, corners with three equivalent O(22)Mn4 tetrahedra, corners with three equivalent O(25)Mn4 tetrahedra, corners with three equivalent O(21)TaMn3 tetrahedra, corners with six equivalent O(23)Mn4 tetrahedra, edges with three equivalent O(20)Mn4 tetrahedra, and edges with three equivalent O(22)Mn4 tetrahedra. In the twenty-fourth O site, O(24) is bonded to one Mn(9) and three equivalent Mn(7) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-fifth O site, O(25) is bonded to one Mn(6) and three equivalent Mn(7) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-sixth O site, O(26) is bonded to one Mn(10) and three equivalent Mn(9) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-seventh O site, O(27) is bonded to one Mn(7) and three equivalent Mn(9) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-eighth O site, O(28) is bonded to one Mn(8) and three equivalent Mn(10) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the twenty-ninth O site, O(29) is bonded to one Mn(9) and three equivalent Mn(10) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the thirtieth O site, O(30) is bonded to one Mn(11) and three equivalent Mn(8) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the thirty-first O site, O(31) is bonded to one Mn(10) and three equivalent Mn(8) atoms to form a mixture of edge and corner-sharing OMn4 tetrahedra. In the thirty-second O site, O(32) is bonded in a distorted bent 150 degrees geometry to one Ta(1) and one Mn(11) atom. In the thirty-third O site, O(33) is bonded in a 3-coordinate geometry to one Mn(8) and three equivalent Mn(11) atoms. In the thirty-fourth O site, O(34) is bonded in a trigonal planar geometry to three equivalent Ta(1) atoms. is represented by the CIF file [CIF]
data_Ta9Mn11O34
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.476
_cell_length_b   3.476
_cell_length_c   70.142
_cell_angle_alpha   61.836
_cell_angle_beta   61.836
_cell_angle_gamma   60.614
_symmetry_Int_Tables_number   1
_cell_volume   618.214
_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
  Ta  Ta0  1  0.932  0.932  0.003  1.0
  Ta  Ta1  1  0.952  0.952  0.154  1.0
  Ta  Ta2  1  0.033  0.033  0.344  1.0
  Ta  Ta3  1  0.062  0.062  0.251  1.0
  Ta  Ta4  1  0.048  0.048  0.289  1.0
  Ta  Ta5  1  0.003  0.003  0.449  1.0
  Ta  Ta6  1  0.018  0.018  0.397  1.0
  Ta  Ta7  1  0.990  0.990  0.502  1.0
  Ta  Ta8  1  0.968  0.968  0.606  1.0
  Mn  Mn9  1  0.964  0.964  0.051  1.0
  Mn  Mn10  1  0.996  0.996  0.099  1.0
  Mn  Mn11  1  0.021  0.021  0.196  1.0
  Mn  Mn12  1  0.960  0.960  0.656  1.0
  Mn  Mn13  1  0.940  0.940  0.558  1.0
  Mn  Mn14  1  0.973  0.973  0.704  1.0
  Mn  Mn15  1  0.992  0.992  0.751  1.0
  Mn  Mn16  1  0.061  0.061  0.893  1.0
  Mn  Mn17  1  0.010  0.010  0.798  1.0
  Mn  Mn18  1  0.030  0.030  0.846  1.0
  Mn  Mn19  1  0.149  0.149  0.940  1.0
  O  O20  1  0.698  0.698  0.040  1.0
  O  O21  1  0.735  0.735  0.087  1.0
  O  O22  1  0.749  0.749  0.135  1.0
  O  O23  1  0.734  0.734  0.188  1.0
  O  O24  1  0.781  0.781  0.232  1.0
  O  O25  1  0.256  0.256  0.310  1.0
  O  O26  1  0.745  0.745  0.284  1.0
  O  O27  1  0.256  0.256  0.361  1.0
  O  O28  1  0.735  0.735  0.338  1.0
  O  O29  1  0.265  0.265  0.410  1.0
  O  O30  1  0.756  0.756  0.386  1.0
  O  O31  1  0.288  0.288  0.457  1.0
  O  O32  1  0.771  0.771  0.434  1.0
  O  O33  1  0.305  0.305  0.505  1.0
  O  O34  1  0.774  0.774  0.484  1.0
  O  O35  1  0.204  0.204  0.569  1.0
  O  O36  1  0.790  0.790  0.533  1.0
  O  O37  1  0.239  0.239  0.615  1.0
  O  O38  1  0.695  0.695  0.596  1.0
  O  O39  1  0.200  0.200  0.669  1.0
  O  O40  1  0.741  0.741  0.641  1.0
  O  O41  1  0.226  0.226  0.716  1.0
  O  O42  1  0.711  0.711  0.693  1.0
  O  O43  1  0.244  0.244  0.763  1.0
  O  O44  1  0.740  0.740  0.739  1.0
  O  O45  1  0.262  0.262  0.810  1.0
  O  O46  1  0.758  0.758  0.787  1.0
  O  O47  1  0.291  0.291  0.857  1.0
  O  O48  1  0.776  0.776  0.834  1.0
  O  O49  1  0.310  0.310  0.908  1.0
  O  O50  1  0.803  0.803  0.882  1.0
  O  O51  1  0.091  0.091  0.973  1.0
  O  O52  1  0.784  0.784  0.939  1.0
  O  O53  1  0.579  0.579  0.006  1.0
[/CIF]
.