The structure described by Ba2YMn3O7 crystallizes in the orthorhombic Pmmm space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO5 square pyramids. In the second Mn site, Mn(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1) and two equivalent Mn(2) atoms to form a mixture of distorted face, corner, and edge-sharing OBa4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Mn(1) atoms. In the fourth O site, O(4) is bonded to four equivalent Ba(1), one Mn(1), and one Mn(2) atom to form a mixture of distorted face, corner, and edge-sharing OBa4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-65°. is represented by the CIF file [CIF]
data_Ba2YMn3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.947
_cell_length_b   4.072
_cell_length_c   11.854
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   89.993
_symmetry_Int_Tables_number   1
_cell_volume   190.538
_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
  Ba  Ba0  1  0.500  0.500  0.819  1.0
  Ba  Ba1  1  0.500  0.500  0.181  1.0
  Y  Y2  1  0.500  0.500  0.500  1.0
  Mn  Mn3  1  0.000  0.000  0.654  1.0
  Mn  Mn4  1  1.000  1.000  0.346  1.0
  Mn  Mn5  1  0.000  1.000  0.000  1.0
  O  O6  1  1.000  0.500  0.000  1.0
  O  O7  1  0.500  0.000  0.619  1.0
  O  O8  1  0.500  0.000  0.381  1.0
  O  O9  1  0.000  0.500  0.621  1.0
  O  O10  1  1.000  0.500  0.379  1.0
  O  O11  1  0.000  0.000  0.834  1.0
  O  O12  1  1.000  0.000  0.166  1.0
[/CIF]
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The structure described by Ba2YMn3O7 crystallizes in the orthorhombic Pmmm space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO5 square pyramids. In the second Mn site, Mn(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1) and two equivalent Mn(2) atoms to form a mixture of distorted face, corner, and edge-sharing OBa4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Mn(1) atoms. In the fourth O site, O(4) is bonded to four equivalent Ba(1), one Mn(1), and one Mn(2) atom to form a mixture of distorted face, corner, and edge-sharing OBa4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-65°. is represented by the CIF file [CIF]
data_Ba2YMn3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.947
_cell_length_b   4.072
_cell_length_c   11.854
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   89.993
_symmetry_Int_Tables_number   1
_cell_volume   190.538
_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
  Ba  Ba0  1  0.500  0.500  0.819  1.0
  Ba  Ba1  1  0.500  0.500  0.181  1.0
  Y  Y2  1  0.500  0.500  0.500  1.0
  Mn  Mn3  1  0.000  0.000  0.654  1.0
  Mn  Mn4  1  1.000  1.000  0.346  1.0
  Mn  Mn5  1  0.000  1.000  0.000  1.0
  O  O6  1  1.000  0.500  0.000  1.0
  O  O7  1  0.500  0.000  0.619  1.0
  O  O8  1  0.500  0.000  0.381  1.0
  O  O9  1  0.000  0.500  0.621  1.0
  O  O10  1  1.000  0.500  0.379  1.0
  O  O11  1  0.000  0.000  0.834  1.0
  O  O12  1  1.000  0.000  0.166  1.0
[/CIF]
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