The crystal structure described by CaMn2O5 crystallizes in the orthorhombic Pmmn space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Mn(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing MnO5 trigonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ca(1) and three equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca(1) and one Mn(1) atom. is represented by the CIF card [CIF]
data_CaMn2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.691
_cell_length_b   4.681
_cell_length_c   11.505
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   198.780
_cell_formula_units_Z   2
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  0.500  0.095  0.000  1.0
  Ca  Ca1  1  0.000  0.905  0.500  1.0
  Mn  Mn2  1  0.000  0.573  0.846  1.0
  Mn  Mn3  1  0.500  0.427  0.654  1.0
  Mn  Mn4  1  0.500  0.427  0.346  1.0
  Mn  Mn5  1  0.000  0.573  0.154  1.0
  O  O6  1  0.500  0.556  0.500  1.0
  O  O7  1  0.000  0.444  0.000  1.0
  O  O8  1  0.500  0.475  0.826  1.0
  O  O9  1  0.000  0.525  0.674  1.0
  O  O10  1  0.500  0.475  0.174  1.0
  O  O11  1  0.000  0.525  0.326  1.0
  O  O12  1  0.000  0.938  0.125  1.0
  O  O13  1  0.500  0.062  0.375  1.0
  O  O14  1  0.500  0.062  0.625  1.0
  O  O15  1  0.000  0.938  0.875  1.0
[/CIF]
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The crystal structure described by CaMn2O5 crystallizes in the orthorhombic Pmmn space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Mn(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing MnO5 trigonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ca(1) and three equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca(1) and one Mn(1) atom. is represented by the CIF card [CIF]
data_CaMn2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.691
_cell_length_b   4.681
_cell_length_c   11.505
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   198.780
_cell_formula_units_Z   2
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  0.500  0.095  0.000  1.0
  Ca  Ca1  1  0.000  0.905  0.500  1.0
  Mn  Mn2  1  0.000  0.573  0.846  1.0
  Mn  Mn3  1  0.500  0.427  0.654  1.0
  Mn  Mn4  1  0.500  0.427  0.346  1.0
  Mn  Mn5  1  0.000  0.573  0.154  1.0
  O  O6  1  0.500  0.556  0.500  1.0
  O  O7  1  0.000  0.444  0.000  1.0
  O  O8  1  0.500  0.475  0.826  1.0
  O  O9  1  0.000  0.525  0.674  1.0
  O  O10  1  0.500  0.475  0.174  1.0
  O  O11  1  0.000  0.525  0.326  1.0
  O  O12  1  0.000  0.938  0.125  1.0
  O  O13  1  0.500  0.062  0.375  1.0
  O  O14  1  0.500  0.062  0.625  1.0
  O  O15  1  0.000  0.938  0.875  1.0
[/CIF]
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