The compound described by CaMn2O4 crystallizes in the triclinic P-1 space group. Ca(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CaO6 octahedra that share corners with ten equivalent Mn(1)O5 square pyramids, edges with two equivalent Ca(1)O6 octahedra, and edges with two equivalent Mn(1)O5 square pyramids. Mn(1) is bonded to two equivalent O(2) and three equivalent O(1) atoms to form distorted MnO5 square pyramids that share corners with five equivalent Ca(1)O6 octahedra, corners with two equivalent Mn(1)O5 square pyramids,  an edgeedge with one Ca(1)O6 octahedra, and edges with three equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 43-62°. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1) and three equivalent Mn(1) atoms to form a mixture of corner and edge-sharing OCaMn3 trigonal pyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Mn(1) atoms. is represented by the CIF file [CIF]
data_CaMn2O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.285
_cell_length_b   4.993
_cell_length_c   5.861
_cell_angle_alpha   67.957
_cell_angle_beta   80.497
_cell_angle_gamma   82.217
_symmetry_Int_Tables_number   1
_cell_volume   87.610
_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  0.250  0.250  0.500  1.0
  Mn  Mn1  1  0.552  0.530  0.960  1.0
  Mn  Mn2  1  0.948  0.970  0.040  1.0
  O  O3  1  0.100  0.777  0.803  1.0
  O  O4  1  0.400  0.723  0.197  1.0
  O  O5  1  0.658  0.273  0.785  1.0
  O  O6  1  0.842  0.227  0.215  1.0
[/CIF]
.
The compound described by CaMn2O4 crystallizes in the triclinic P-1 space group. Ca(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CaO6 octahedra that share corners with ten equivalent Mn(1)O5 square pyramids, edges with two equivalent Ca(1)O6 octahedra, and edges with two equivalent Mn(1)O5 square pyramids. Mn(1) is bonded to two equivalent O(2) and three equivalent O(1) atoms to form distorted MnO5 square pyramids that share corners with five equivalent Ca(1)O6 octahedra, corners with two equivalent Mn(1)O5 square pyramids,  an edgeedge with one Ca(1)O6 octahedra, and edges with three equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 43-62°. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1) and three equivalent Mn(1) atoms to form a mixture of corner and edge-sharing OCaMn3 trigonal pyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Mn(1) atoms. is represented by the CIF file [CIF]
data_CaMn2O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.285
_cell_length_b   4.993
_cell_length_c   5.861
_cell_angle_alpha   67.957
_cell_angle_beta   80.497
_cell_angle_gamma   82.217
_symmetry_Int_Tables_number   1
_cell_volume   87.610
_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  0.250  0.250  0.500  1.0
  Mn  Mn1  1  0.552  0.530  0.960  1.0
  Mn  Mn2  1  0.948  0.970  0.040  1.0
  O  O3  1  0.100  0.777  0.803  1.0
  O  O4  1  0.400  0.723  0.197  1.0
  O  O5  1  0.658  0.273  0.785  1.0
  O  O6  1  0.842  0.227  0.215  1.0
[/CIF]
.