The crystal structure described by CaMn16O32 crystallizes in the monoclinic Pm space group. Ca(1) is bonded in a 5-coordinate geometry to one O(5), two equivalent O(21), and two equivalent O(24) atoms. There are twelve inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(18), one O(8), two equivalent O(21), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the second Mn site, Mn(2) is bonded to one O(17), one O(7), two equivalent O(21), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the third Mn site, Mn(3) is bonded to one O(11), one O(19), two equivalent O(22), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(20), two equivalent O(22), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the fifth Mn site, Mn(5) is bonded to one O(15), one O(5), two equivalent O(2), and two equivalent O(24) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the sixth Mn site, Mn(6) is bonded to one O(16), one O(6), two equivalent O(2), and two equivalent O(24) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. In the seventh Mn site, Mn(7) is bonded to one O(10), one O(14), two equivalent O(1), and two equivalent O(23) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 51°. In the eighth Mn site, Mn(8) is bonded to one O(13), one O(9), two equivalent O(1), and two equivalent O(23) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the ninth Mn site, Mn(9) is bonded to one O(11), one O(12), one O(13), one O(14), one O(2), and one O(23) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the tenth Mn site, Mn(10) is bonded to one O(10), one O(15), one O(16), one O(24), one O(4), and one O(9) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the eleventh Mn site, Mn(11) is bonded to one O(1), one O(19), one O(20), one O(22), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the twelfth Mn site, Mn(12) is bonded to one O(17), one O(18), one O(21), one O(3), one O(5), and one O(6) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(11), one Mn(7), and one Mn(8) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(5), one Mn(6), and one Mn(9) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(12), one Mn(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(10), and one Mn(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(5), and two equivalent Mn(12) atoms. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(6) and two equivalent Mn(12) atoms. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(2) and two equivalent Mn(11) atoms. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mn(1) and two equivalent Mn(11) atoms. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(8) and two equivalent Mn(10) atoms. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Mn(7) and two equivalent Mn(10) atoms. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Mn(3) and two equivalent Mn(9) atoms. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Mn(4) and two equivalent Mn(9) atoms. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Mn(8) and two equivalent Mn(9) atoms. In the fourteenth O site, O(14) is bonded in a distorted trigonal non-coplanar geometry to one Mn(7) and two equivalent Mn(9) atoms. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Mn(5) and two equivalent Mn(10) atoms. In the sixteenth O site, O(16) is bonded in a distorted trigonal non-coplanar geometry to one Mn(6) and two equivalent Mn(10) atoms. In the seventeenth O site, O(17) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2) and two equivalent Mn(12) atoms. In the eighteenth O site, O(18) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Mn(12) atoms. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Mn(3) and two equivalent Mn(11) atoms. In the twentieth O site, O(20) is bonded in a distorted trigonal non-coplanar geometry to one Mn(4) and two equivalent Mn(11) atoms. In the twenty-first O site, O(21) is bonded to one Ca(1), one Mn(1), one Mn(12), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OCaMn3 trigonal pyramids. In the twenty-second O site, O(22) is bonded in a distorted trigonal non-coplanar geometry to one Mn(11), one Mn(3), and one Mn(4) atom. In the twenty-third O site, O(23) is bonded in a distorted T-shaped geometry to one Mn(7), one Mn(8), and one Mn(9) atom. In the twenty-fourth O site, O(24) is bonded to one Ca(1), one Mn(10), one Mn(5), and one Mn(6) atom to form a mixture of corner and edge-sharing OCaMn3 trigonal pyramids. is represented by the CIF card [CIF]
data_CaMn16O32
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.907
_cell_length_b   9.854
_cell_length_c   9.973
_cell_angle_alpha   89.987
_cell_angle_beta   89.995
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   580.467
_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
  Ca  Ca0  1  0.000  0.497  0.427  1.0
  Mn  Mn1  1  0.500  0.171  0.353  1.0
  Mn  Mn2  1  0.000  0.163  0.346  1.0
  Mn  Mn3  1  0.500  0.349  0.832  1.0
  Mn  Mn4  1  0.000  0.347  0.834  1.0
  Mn  Mn5  1  0.000  0.657  0.156  1.0
  Mn  Mn6  1  0.500  0.647  0.167  1.0
  Mn  Mn7  1  1.000  0.833  0.647  1.0
  Mn  Mn8  1  0.500  0.831  0.645  1.0
  Mn  Mn9  1  0.751  0.667  0.845  1.0
  Mn  Mn10  1  0.249  0.667  0.846  1.0
  Mn  Mn11  1  0.752  0.848  0.332  1.0
  Mn  Mn12  1  0.248  0.847  0.332  1.0
  Mn  Mn13  1  0.750  0.151  0.665  1.0
  Mn  Mn14  1  0.250  0.151  0.665  1.0
  Mn  Mn15  1  0.751  0.331  0.149  1.0
  Mn  Mn16  1  0.249  0.331  0.149  1.0
  O  O17  1  0.749  0.957  0.658  1.0
  O  O18  1  0.251  0.957  0.658  1.0
  O  O19  1  0.752  0.664  0.036  1.0
  O  O20  1  0.248  0.664  0.036  1.0
  O  O21  1  0.749  0.333  0.955  1.0
  O  O22  1  0.251  0.333  0.955  1.0
  O  O23  1  0.754  0.041  0.340  1.0
  O  O24  1  0.247  0.041  0.340  1.0
  O  O25  1  0.000  0.458  0.165  1.0
  O  O26  1  0.500  0.454  0.163  1.0
  O  O27  1  1.000  0.173  0.542  1.0
  O  O28  1  0.500  0.173  0.544  1.0
  O  O29  1  0.500  0.829  0.454  1.0
  O  O30  1  1.000  0.828  0.455  1.0
  O  O31  1  0.500  0.542  0.831  1.0
  O  O32  1  1.000  0.542  0.829  1.0
  O  O33  1  0.500  0.796  0.837  1.0
  O  O34  1  1.000  0.796  0.838  1.0
  O  O35  1  0.000  0.847  0.202  1.0
  O  O36  1  0.500  0.840  0.205  1.0
  O  O37  1  0.000  0.201  0.154  1.0
  O  O38  1  0.500  0.203  0.161  1.0
  O  O39  1  0.500  0.155  0.793  1.0
  O  O40  1  1.000  0.154  0.793  1.0
  O  O41  1  0.768  0.307  0.344  1.0
  O  O42  1  0.233  0.307  0.344  1.0
  O  O43  1  0.753  0.346  0.703  1.0
  O  O44  1  0.247  0.346  0.703  1.0
  O  O45  1  0.753  0.701  0.648  1.0
  O  O46  1  0.247  0.701  0.648  1.0
  O  O47  1  0.768  0.648  0.298  1.0
  O  O48  1  0.232  0.648  0.298  1.0
[/CIF]
.
The crystal structure described by CaMn16O32 crystallizes in the monoclinic Pm space group. Ca(1) is bonded in a 5-coordinate geometry to one O(5), two equivalent O(21), and two equivalent O(24) atoms. There are twelve inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(18), one O(8), two equivalent O(21), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the second Mn site, Mn(2) is bonded to one O(17), one O(7), two equivalent O(21), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the third Mn site, Mn(3) is bonded to one O(11), one O(19), two equivalent O(22), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(20), two equivalent O(22), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the fifth Mn site, Mn(5) is bonded to one O(15), one O(5), two equivalent O(2), and two equivalent O(24) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the sixth Mn site, Mn(6) is bonded to one O(16), one O(6), two equivalent O(2), and two equivalent O(24) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. In the seventh Mn site, Mn(7) is bonded to one O(10), one O(14), two equivalent O(1), and two equivalent O(23) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 51°. In the eighth Mn site, Mn(8) is bonded to one O(13), one O(9), two equivalent O(1), and two equivalent O(23) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the ninth Mn site, Mn(9) is bonded to one O(11), one O(12), one O(13), one O(14), one O(2), and one O(23) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the tenth Mn site, Mn(10) is bonded to one O(10), one O(15), one O(16), one O(24), one O(4), and one O(9) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the eleventh Mn site, Mn(11) is bonded to one O(1), one O(19), one O(20), one O(22), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. In the twelfth Mn site, Mn(12) is bonded to one O(17), one O(18), one O(21), one O(3), one O(5), and one O(6) atom to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(11), one Mn(7), and one Mn(8) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(5), one Mn(6), and one Mn(9) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(12), one Mn(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(10), and one Mn(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(5), and two equivalent Mn(12) atoms. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(6) and two equivalent Mn(12) atoms. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(2) and two equivalent Mn(11) atoms. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mn(1) and two equivalent Mn(11) atoms. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(8) and two equivalent Mn(10) atoms. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Mn(7) and two equivalent Mn(10) atoms. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Mn(3) and two equivalent Mn(9) atoms. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Mn(4) and two equivalent Mn(9) atoms. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Mn(8) and two equivalent Mn(9) atoms. In the fourteenth O site, O(14) is bonded in a distorted trigonal non-coplanar geometry to one Mn(7) and two equivalent Mn(9) atoms. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Mn(5) and two equivalent Mn(10) atoms. In the sixteenth O site, O(16) is bonded in a distorted trigonal non-coplanar geometry to one Mn(6) and two equivalent Mn(10) atoms. In the seventeenth O site, O(17) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2) and two equivalent Mn(12) atoms. In the eighteenth O site, O(18) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Mn(12) atoms. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Mn(3) and two equivalent Mn(11) atoms. In the twentieth O site, O(20) is bonded in a distorted trigonal non-coplanar geometry to one Mn(4) and two equivalent Mn(11) atoms. In the twenty-first O site, O(21) is bonded to one Ca(1), one Mn(1), one Mn(12), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OCaMn3 trigonal pyramids. In the twenty-second O site, O(22) is bonded in a distorted trigonal non-coplanar geometry to one Mn(11), one Mn(3), and one Mn(4) atom. In the twenty-third O site, O(23) is bonded in a distorted T-shaped geometry to one Mn(7), one Mn(8), and one Mn(9) atom. In the twenty-fourth O site, O(24) is bonded to one Ca(1), one Mn(10), one Mn(5), and one Mn(6) atom to form a mixture of corner and edge-sharing OCaMn3 trigonal pyramids. is represented by the CIF card [CIF]
data_CaMn16O32
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.907
_cell_length_b   9.854
_cell_length_c   9.973
_cell_angle_alpha   89.987
_cell_angle_beta   89.995
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   580.467
_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
  Ca  Ca0  1  0.000  0.497  0.427  1.0
  Mn  Mn1  1  0.500  0.171  0.353  1.0
  Mn  Mn2  1  0.000  0.163  0.346  1.0
  Mn  Mn3  1  0.500  0.349  0.832  1.0
  Mn  Mn4  1  0.000  0.347  0.834  1.0
  Mn  Mn5  1  0.000  0.657  0.156  1.0
  Mn  Mn6  1  0.500  0.647  0.167  1.0
  Mn  Mn7  1  1.000  0.833  0.647  1.0
  Mn  Mn8  1  0.500  0.831  0.645  1.0
  Mn  Mn9  1  0.751  0.667  0.845  1.0
  Mn  Mn10  1  0.249  0.667  0.846  1.0
  Mn  Mn11  1  0.752  0.848  0.332  1.0
  Mn  Mn12  1  0.248  0.847  0.332  1.0
  Mn  Mn13  1  0.750  0.151  0.665  1.0
  Mn  Mn14  1  0.250  0.151  0.665  1.0
  Mn  Mn15  1  0.751  0.331  0.149  1.0
  Mn  Mn16  1  0.249  0.331  0.149  1.0
  O  O17  1  0.749  0.957  0.658  1.0
  O  O18  1  0.251  0.957  0.658  1.0
  O  O19  1  0.752  0.664  0.036  1.0
  O  O20  1  0.248  0.664  0.036  1.0
  O  O21  1  0.749  0.333  0.955  1.0
  O  O22  1  0.251  0.333  0.955  1.0
  O  O23  1  0.754  0.041  0.340  1.0
  O  O24  1  0.247  0.041  0.340  1.0
  O  O25  1  0.000  0.458  0.165  1.0
  O  O26  1  0.500  0.454  0.163  1.0
  O  O27  1  1.000  0.173  0.542  1.0
  O  O28  1  0.500  0.173  0.544  1.0
  O  O29  1  0.500  0.829  0.454  1.0
  O  O30  1  1.000  0.828  0.455  1.0
  O  O31  1  0.500  0.542  0.831  1.0
  O  O32  1  1.000  0.542  0.829  1.0
  O  O33  1  0.500  0.796  0.837  1.0
  O  O34  1  1.000  0.796  0.838  1.0
  O  O35  1  0.000  0.847  0.202  1.0
  O  O36  1  0.500  0.840  0.205  1.0
  O  O37  1  0.000  0.201  0.154  1.0
  O  O38  1  0.500  0.203  0.161  1.0
  O  O39  1  0.500  0.155  0.793  1.0
  O  O40  1  1.000  0.154  0.793  1.0
  O  O41  1  0.768  0.307  0.344  1.0
  O  O42  1  0.233  0.307  0.344  1.0
  O  O43  1  0.753  0.346  0.703  1.0
  O  O44  1  0.247  0.346  0.703  1.0
  O  O45  1  0.753  0.701  0.648  1.0
  O  O46  1  0.247  0.701  0.648  1.0
  O  O47  1  0.768  0.648  0.298  1.0
  O  O48  1  0.232  0.648  0.298  1.0
[/CIF]
.