The crystal structure described by Sr12Mn6O23 crystallizes in the triclinic P-1 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(5), one O(6), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(2), one O(4), one O(5), one O(7), and two equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(10), one O(12), one O(3), one O(6), one O(7), one O(8), one O(9), and two equivalent O(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(6), one O(8), and two equivalent O(4) atoms. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. In the sixth Sr site, Sr(6) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(11), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra and corners with two equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 6°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(4), one O(5), and one O(7) atom to form corner-sharing MnO5 square pyramids. The corner-sharing octahedral tilt angles range from 0-11°. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, and  a cornercorner with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 0-6°. In the fourth Mn site, Mn(4) is bonded to two equivalent O(10), two equivalent O(12), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra and corners with two equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 1°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(6), one Mn(1), and one Mn(2) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(1)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(5)Sr5Mn octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with three equivalent O(12)Sr5Mn octahedra, corners with three equivalent O(3)Sr5Mn octahedra, corners with three equivalent O(8)Sr5Mn octahedra,  an edgeedge with one O(6)Sr4Mn2 octahedra,  an edgeedge with one O(7)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra,  a faceface with one O(4)Sr5Mn octahedra,  a faceface with one O(5)Sr5Mn octahedra, faces with two equivalent O(2)Sr4Mn2 octahedra, and faces with two equivalent O(11)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-64°. In the second O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(6), one Mn(1), and one Mn(3) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(2)Sr4Mn2 octahedra,  a cornercorner with one O(9)Sr4Mn2 octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with three equivalent O(12)Sr5Mn octahedra, corners with three equivalent O(5)Sr5Mn octahedra, corners with four equivalent O(4)Sr5Mn octahedra,  an edgeedge with one O(10)Sr4Mn2 octahedra,  a faceface with one O(6)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(8)Sr5Mn octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(11)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the third O site, O(3) is bonded to one Sr(3), one Sr(5), one Sr(6), two equivalent Sr(1), and one Mn(3) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(2)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(12)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(6)Sr4Mn2 octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with three equivalent O(1)Sr4Mn2 octahedra, corners with four equivalent O(10)Sr4Mn2 octahedra,  an edgeedge with one O(3)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(11)Sr5Mn octahedra, edges with two equivalent O(12)Sr5Mn octahedra, edges with two equivalent O(5)Sr5Mn octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(6)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra, and  a faceface with one O(9)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-57°. In the fourth O site, O(4) is bonded to one Sr(2), one Sr(5), one Sr(6), two equivalent Sr(4), and one Mn(2) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(10)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(9)Sr4Mn2 octahedra,  a cornercorner with one O(11)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(1)Sr4Mn2 octahedra, corners with two equivalent O(3)Sr5Mn octahedra, corners with three equivalent O(6)Sr4Mn2 octahedra, corners with four equivalent O(2)Sr4Mn2 octahedra,  an edgeedge with one O(4)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra, edges with two equivalent O(11)Sr5Mn octahedra, edges with two equivalent O(12)Sr5Mn octahedra, edges with two equivalent O(8)Sr5Mn octahedra,  a faceface with one O(1)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra, and  a faceface with one O(7)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 6-64°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(6), two equivalent Sr(3), and one Mn(2) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(1)Sr4Mn2 octahedra,  a cornercorner with one O(10)Sr4Mn2 octahedra,  a cornercorner with one O(11)Sr5Mn octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(7)Sr4Mn2 octahedra, corners with two equivalent O(9)Sr4Mn2 octahedra, corners with two equivalent O(8)Sr5Mn octahedra, corners with three equivalent O(2)Sr4Mn2 octahedra, corners with three equivalent O(6)Sr4Mn2 octahedra,  an edgeedge with one O(11)Sr5Mn octahedra,  an edgeedge with one O(4)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(12)Sr5Mn octahedra, edges with two equivalent O(3)Sr5Mn octahedra,  a faceface with one O(1)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra, and  a faceface with one O(7)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 6-64°. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Mn(3), and one Mn(4) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(6)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(3)Sr5Mn octahedra, corners with three equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(4)Sr5Mn octahedra, corners with three equivalent O(5)Sr5Mn octahedra,  an edgeedge with one O(1)Sr4Mn2 octahedra,  an edgeedge with one O(7)Sr4Mn2 octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(9)Sr4Mn2 octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(8)Sr5Mn octahedra, faces with two equivalent O(10)Sr4Mn2 octahedra, and faces with two equivalent O(12)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(5), one Sr(6), one Mn(2), and one Mn(3) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(1)Sr4Mn2 octahedra,  a cornercorner with one O(6)Sr4Mn2 octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(5)Sr5Mn octahedra, corners with two equivalent O(8)Sr5Mn octahedra, corners with three equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(12)Sr5Mn octahedra,  an edgeedge with one O(1)Sr4Mn2 octahedra,  an edgeedge with one O(6)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(9)Sr4Mn2 octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(4)Sr5Mn octahedra,  a faceface with one O(5)Sr5Mn octahedra, and  a faceface with one O(8)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 3-64°. In the eighth O site, O(8) is bonded to one Sr(3), one Sr(4), one Sr(5), two equivalent Sr(2), and one Mn(3) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(2)Sr4Mn2 octahedra,  a cornercorner with one O(6)Sr4Mn2 octahedra,  a cornercorner with one O(12)Sr5Mn octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(7)Sr4Mn2 octahedra, corners with two equivalent O(5)Sr5Mn octahedra, corners with three equivalent O(1)Sr4Mn2 octahedra, corners with three equivalent O(10)Sr4Mn2 octahedra,  an edgeedge with one O(12)Sr5Mn octahedra,  an edgeedge with one O(3)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(11)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(6)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra, and  a faceface with one O(9)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-56°. In the ninth O site, O(9) is bonded to two equivalent Sr(3), two equivalent Sr(5), and two equivalent Mn(3) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(2)Sr4Mn2 octahedra, corners with two equivalent O(11)Sr5Mn octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with four equivalent O(12)Sr5Mn octahedra, corners with four equivalent O(5)Sr5Mn octahedra, edges with two equivalent O(10)Sr4Mn2 octahedra, faces with two equivalent O(6)Sr4Mn2 octahedra, faces with two equivalent O(7)Sr4Mn2 octahedra, faces with two equivalent O(3)Sr5Mn octahedra, and faces with two equivalent O(8)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 3-59°. In the tenth O site, O(10) is bonded to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Mn(2), and one Mn(4) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(10)Sr4Mn2 octahedra,  a cornercorner with one O(4)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra, corners with three equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(8)Sr5Mn octahedra, corners with four equivalent O(3)Sr5Mn octahedra,  an edgeedge with one O(2)Sr4Mn2 octahedra,  an edgeedge with one O(9)Sr4Mn2 octahedra,  a faceface with one O(1)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra,  a faceface with one O(4)Sr5Mn octahedra,  a faceface with one O(5)Sr5Mn octahedra, faces with two equivalent O(6)Sr4Mn2 octahedra, and faces with two equivalent O(12)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(5), one Sr(6), and one Mn(1) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(9)Sr4Mn2 octahedra,  a cornercorner with one O(11)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra, corners with two equivalent O(12)Sr5Mn octahedra, corners with three equivalent O(10)Sr4Mn2 octahedra, corners with three equivalent O(6)Sr4Mn2 octahedra, corners with three equivalent O(7)Sr4Mn2 octahedra,  an edgeedge with one O(12)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with two equivalent O(8)Sr5Mn octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(2)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Sr(6), and one Mn(4) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(12)Sr5Mn octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(9)Sr4Mn2 octahedra, corners with two equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(1)Sr4Mn2 octahedra, corners with three equivalent O(2)Sr4Mn2 octahedra, corners with three equivalent O(7)Sr4Mn2 octahedra,  an edgeedge with one O(11)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with two equivalent O(5)Sr5Mn octahedra, faces with two equivalent O(10)Sr4Mn2 octahedra, and faces with two equivalent O(6)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. is represented by the CIF card [CIF]
data_Sr12Mn6O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.677
_cell_length_b   8.798
_cell_length_c   8.804
_cell_angle_alpha   102.708
_cell_angle_beta   84.351
_cell_angle_gamma   119.514
_symmetry_Int_Tables_number   1
_cell_volume   570.512
_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
  Sr  Sr0  1  0.094  0.417  0.631  1.0
  Sr  Sr1  1  0.576  0.242  0.036  1.0
  Sr  Sr2  1  0.424  0.758  0.964  1.0
  Sr  Sr3  1  0.906  0.583  0.369  1.0
  Sr  Sr4  1  0.430  0.248  0.460  1.0
  Sr  Sr5  1  0.901  0.080  0.869  1.0
  Sr  Sr6  1  0.760  0.084  0.300  1.0
  Sr  Sr7  1  0.240  0.916  0.700  1.0
  Sr  Sr8  1  0.773  0.586  0.789  1.0
  Sr  Sr9  1  0.227  0.414  0.211  1.0
  Sr  Sr10  1  0.099  0.920  0.131  1.0
  Sr  Sr11  1  0.570  0.752  0.540  1.0
  Mn  Mn12  1  0.000  0.500  0.000  1.0
  Mn  Mn13  1  0.329  0.329  0.829  1.0
  Mn  Mn14  1  0.668  0.169  0.667  1.0
  Mn  Mn15  1  0.332  0.831  0.333  1.0
  Mn  Mn16  1  0.000  0.000  0.500  1.0
  Mn  Mn17  1  0.671  0.671  0.171  1.0
  O  O18  1  0.183  0.429  0.929  1.0
  O  O19  1  0.843  0.331  0.830  1.0
  O  O20  1  0.771  0.350  0.534  1.0
  O  O21  1  0.243  0.167  0.974  1.0
  O  O22  1  0.449  0.526  0.718  1.0
  O  O23  1  0.832  0.081  0.583  1.0
  O  O24  1  0.511  0.264  0.763  1.0
  O  O25  1  0.562  0.985  0.797  1.0
  O  O26  1  0.551  0.474  0.282  1.0
  O  O27  1  0.817  0.571  0.071  1.0
  O  O28  1  0.757  0.833  0.026  1.0
  O  O29  1  0.500  0.000  0.500  1.0
  O  O30  1  0.167  0.166  0.666  1.0
  O  O31  1  0.106  0.685  0.869  1.0
  O  O32  1  0.894  0.315  0.131  1.0
  O  O33  1  0.168  0.919  0.417  1.0
  O  O34  1  0.489  0.736  0.237  1.0
  O  O35  1  0.438  0.015  0.203  1.0
  O  O36  1  0.103  0.183  0.370  1.0
  O  O37  1  0.229  0.650  0.466  1.0
  O  O38  1  0.897  0.817  0.630  1.0
  O  O39  1  0.157  0.669  0.170  1.0
  O  O40  1  0.833  0.834  0.334  1.0
[/CIF]
.
The crystal structure described by Sr12Mn6O23 crystallizes in the triclinic P-1 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(5), one O(6), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(2), one O(4), one O(5), one O(7), and two equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(10), one O(12), one O(3), one O(6), one O(7), one O(8), one O(9), and two equivalent O(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(6), one O(8), and two equivalent O(4) atoms. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. In the sixth Sr site, Sr(6) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(11), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra and corners with two equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 6°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(4), one O(5), and one O(7) atom to form corner-sharing MnO5 square pyramids. The corner-sharing octahedral tilt angles range from 0-11°. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, and  a cornercorner with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 0-6°. In the fourth Mn site, Mn(4) is bonded to two equivalent O(10), two equivalent O(12), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra and corners with two equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 1°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(6), one Mn(1), and one Mn(2) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(1)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(5)Sr5Mn octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with three equivalent O(12)Sr5Mn octahedra, corners with three equivalent O(3)Sr5Mn octahedra, corners with three equivalent O(8)Sr5Mn octahedra,  an edgeedge with one O(6)Sr4Mn2 octahedra,  an edgeedge with one O(7)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra,  a faceface with one O(4)Sr5Mn octahedra,  a faceface with one O(5)Sr5Mn octahedra, faces with two equivalent O(2)Sr4Mn2 octahedra, and faces with two equivalent O(11)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-64°. In the second O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(6), one Mn(1), and one Mn(3) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(2)Sr4Mn2 octahedra,  a cornercorner with one O(9)Sr4Mn2 octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with three equivalent O(12)Sr5Mn octahedra, corners with three equivalent O(5)Sr5Mn octahedra, corners with four equivalent O(4)Sr5Mn octahedra,  an edgeedge with one O(10)Sr4Mn2 octahedra,  a faceface with one O(6)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(8)Sr5Mn octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(11)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the third O site, O(3) is bonded to one Sr(3), one Sr(5), one Sr(6), two equivalent Sr(1), and one Mn(3) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(2)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(12)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(6)Sr4Mn2 octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with three equivalent O(1)Sr4Mn2 octahedra, corners with four equivalent O(10)Sr4Mn2 octahedra,  an edgeedge with one O(3)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(11)Sr5Mn octahedra, edges with two equivalent O(12)Sr5Mn octahedra, edges with two equivalent O(5)Sr5Mn octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(6)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra, and  a faceface with one O(9)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-57°. In the fourth O site, O(4) is bonded to one Sr(2), one Sr(5), one Sr(6), two equivalent Sr(4), and one Mn(2) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(10)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(9)Sr4Mn2 octahedra,  a cornercorner with one O(11)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(1)Sr4Mn2 octahedra, corners with two equivalent O(3)Sr5Mn octahedra, corners with three equivalent O(6)Sr4Mn2 octahedra, corners with four equivalent O(2)Sr4Mn2 octahedra,  an edgeedge with one O(4)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra, edges with two equivalent O(11)Sr5Mn octahedra, edges with two equivalent O(12)Sr5Mn octahedra, edges with two equivalent O(8)Sr5Mn octahedra,  a faceface with one O(1)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra, and  a faceface with one O(7)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 6-64°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(6), two equivalent Sr(3), and one Mn(2) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(1)Sr4Mn2 octahedra,  a cornercorner with one O(10)Sr4Mn2 octahedra,  a cornercorner with one O(11)Sr5Mn octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(7)Sr4Mn2 octahedra, corners with two equivalent O(9)Sr4Mn2 octahedra, corners with two equivalent O(8)Sr5Mn octahedra, corners with three equivalent O(2)Sr4Mn2 octahedra, corners with three equivalent O(6)Sr4Mn2 octahedra,  an edgeedge with one O(11)Sr5Mn octahedra,  an edgeedge with one O(4)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(12)Sr5Mn octahedra, edges with two equivalent O(3)Sr5Mn octahedra,  a faceface with one O(1)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra, and  a faceface with one O(7)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 6-64°. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Mn(3), and one Mn(4) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(6)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr4Mn2 octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(3)Sr5Mn octahedra, corners with three equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(4)Sr5Mn octahedra, corners with three equivalent O(5)Sr5Mn octahedra,  an edgeedge with one O(1)Sr4Mn2 octahedra,  an edgeedge with one O(7)Sr4Mn2 octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(9)Sr4Mn2 octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(8)Sr5Mn octahedra, faces with two equivalent O(10)Sr4Mn2 octahedra, and faces with two equivalent O(12)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(5), one Sr(6), one Mn(2), and one Mn(3) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(1)Sr4Mn2 octahedra,  a cornercorner with one O(6)Sr4Mn2 octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(5)Sr5Mn octahedra, corners with two equivalent O(8)Sr5Mn octahedra, corners with three equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(12)Sr5Mn octahedra,  an edgeedge with one O(1)Sr4Mn2 octahedra,  an edgeedge with one O(6)Sr4Mn2 octahedra,  a faceface with one O(10)Sr4Mn2 octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(9)Sr4Mn2 octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(4)Sr5Mn octahedra,  a faceface with one O(5)Sr5Mn octahedra, and  a faceface with one O(8)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 3-64°. In the eighth O site, O(8) is bonded to one Sr(3), one Sr(4), one Sr(5), two equivalent Sr(2), and one Mn(3) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(2)Sr4Mn2 octahedra,  a cornercorner with one O(6)Sr4Mn2 octahedra,  a cornercorner with one O(12)Sr5Mn octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(7)Sr4Mn2 octahedra, corners with two equivalent O(5)Sr5Mn octahedra, corners with three equivalent O(1)Sr4Mn2 octahedra, corners with three equivalent O(10)Sr4Mn2 octahedra,  an edgeedge with one O(12)Sr5Mn octahedra,  an edgeedge with one O(3)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(11)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra,  a faceface with one O(2)Sr4Mn2 octahedra,  a faceface with one O(6)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra, and  a faceface with one O(9)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-56°. In the ninth O site, O(9) is bonded to two equivalent Sr(3), two equivalent Sr(5), and two equivalent Mn(3) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(2)Sr4Mn2 octahedra, corners with two equivalent O(11)Sr5Mn octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with four equivalent O(12)Sr5Mn octahedra, corners with four equivalent O(5)Sr5Mn octahedra, edges with two equivalent O(10)Sr4Mn2 octahedra, faces with two equivalent O(6)Sr4Mn2 octahedra, faces with two equivalent O(7)Sr4Mn2 octahedra, faces with two equivalent O(3)Sr5Mn octahedra, and faces with two equivalent O(8)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 3-59°. In the tenth O site, O(10) is bonded to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Mn(2), and one Mn(4) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(10)Sr4Mn2 octahedra,  a cornercorner with one O(4)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra, corners with three equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(8)Sr5Mn octahedra, corners with four equivalent O(3)Sr5Mn octahedra,  an edgeedge with one O(2)Sr4Mn2 octahedra,  an edgeedge with one O(9)Sr4Mn2 octahedra,  a faceface with one O(1)Sr4Mn2 octahedra,  a faceface with one O(7)Sr4Mn2 octahedra,  a faceface with one O(4)Sr5Mn octahedra,  a faceface with one O(5)Sr5Mn octahedra, faces with two equivalent O(6)Sr4Mn2 octahedra, and faces with two equivalent O(12)Sr5Mn octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(5), one Sr(6), and one Mn(1) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(9)Sr4Mn2 octahedra,  a cornercorner with one O(11)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra,  a cornercorner with one O(5)Sr5Mn octahedra, corners with two equivalent O(12)Sr5Mn octahedra, corners with three equivalent O(10)Sr4Mn2 octahedra, corners with three equivalent O(6)Sr4Mn2 octahedra, corners with three equivalent O(7)Sr4Mn2 octahedra,  an edgeedge with one O(12)Sr5Mn octahedra,  an edgeedge with one O(5)Sr5Mn octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with two equivalent O(8)Sr5Mn octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(2)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Sr(6), and one Mn(4) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(12)Sr5Mn octahedra,  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(8)Sr5Mn octahedra, corners with two equivalent O(9)Sr4Mn2 octahedra, corners with two equivalent O(11)Sr5Mn octahedra, corners with three equivalent O(1)Sr4Mn2 octahedra, corners with three equivalent O(2)Sr4Mn2 octahedra, corners with three equivalent O(7)Sr4Mn2 octahedra,  an edgeedge with one O(11)Sr5Mn octahedra,  an edgeedge with one O(8)Sr5Mn octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with two equivalent O(5)Sr5Mn octahedra, faces with two equivalent O(10)Sr4Mn2 octahedra, and faces with two equivalent O(6)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. is represented by the CIF card [CIF]
data_Sr12Mn6O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.677
_cell_length_b   8.798
_cell_length_c   8.804
_cell_angle_alpha   102.708
_cell_angle_beta   84.351
_cell_angle_gamma   119.514
_symmetry_Int_Tables_number   1
_cell_volume   570.512
_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
  Sr  Sr0  1  0.094  0.417  0.631  1.0
  Sr  Sr1  1  0.576  0.242  0.036  1.0
  Sr  Sr2  1  0.424  0.758  0.964  1.0
  Sr  Sr3  1  0.906  0.583  0.369  1.0
  Sr  Sr4  1  0.430  0.248  0.460  1.0
  Sr  Sr5  1  0.901  0.080  0.869  1.0
  Sr  Sr6  1  0.760  0.084  0.300  1.0
  Sr  Sr7  1  0.240  0.916  0.700  1.0
  Sr  Sr8  1  0.773  0.586  0.789  1.0
  Sr  Sr9  1  0.227  0.414  0.211  1.0
  Sr  Sr10  1  0.099  0.920  0.131  1.0
  Sr  Sr11  1  0.570  0.752  0.540  1.0
  Mn  Mn12  1  0.000  0.500  0.000  1.0
  Mn  Mn13  1  0.329  0.329  0.829  1.0
  Mn  Mn14  1  0.668  0.169  0.667  1.0
  Mn  Mn15  1  0.332  0.831  0.333  1.0
  Mn  Mn16  1  0.000  0.000  0.500  1.0
  Mn  Mn17  1  0.671  0.671  0.171  1.0
  O  O18  1  0.183  0.429  0.929  1.0
  O  O19  1  0.843  0.331  0.830  1.0
  O  O20  1  0.771  0.350  0.534  1.0
  O  O21  1  0.243  0.167  0.974  1.0
  O  O22  1  0.449  0.526  0.718  1.0
  O  O23  1  0.832  0.081  0.583  1.0
  O  O24  1  0.511  0.264  0.763  1.0
  O  O25  1  0.562  0.985  0.797  1.0
  O  O26  1  0.551  0.474  0.282  1.0
  O  O27  1  0.817  0.571  0.071  1.0
  O  O28  1  0.757  0.833  0.026  1.0
  O  O29  1  0.500  0.000  0.500  1.0
  O  O30  1  0.167  0.166  0.666  1.0
  O  O31  1  0.106  0.685  0.869  1.0
  O  O32  1  0.894  0.315  0.131  1.0
  O  O33  1  0.168  0.919  0.417  1.0
  O  O34  1  0.489  0.736  0.237  1.0
  O  O35  1  0.438  0.015  0.203  1.0
  O  O36  1  0.103  0.183  0.370  1.0
  O  O37  1  0.229  0.650  0.466  1.0
  O  O38  1  0.897  0.817  0.630  1.0
  O  O39  1  0.157  0.669  0.170  1.0
  O  O40  1  0.833  0.834  0.334  1.0
[/CIF]
.