The material structure described by CrMn7O16 is trigonal omega-derived structured and crystallizes in the monoclinic P2/m space group. Cr(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CrO6 octahedra that share edges with two equivalent Mn(1)O6 octahedra and edges with four equivalent Mn(2)O6 octahedra. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form MnO6 octahedra that share edges with two equivalent Cr(1)O6 octahedra and edges with four equivalent Mn(2)O6 octahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form MnO6 octahedra that share  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra,  an edgeedge with one Mn(4)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. In the third Mn site, Mn(3) is bonded to two equivalent O(5) and four equivalent O(6) atoms to form edge-sharing MnO6 octahedra. In the fourth Mn site, Mn(4) is bonded to two equivalent O(4) and four equivalent O(6) atoms to form edge-sharing MnO6 octahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Cr(1), one Mn(1), and one Mn(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Cr(1) and two equivalent Mn(2) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mn(1) and two equivalent Mn(2) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mn(4) and two equivalent Mn(2) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mn(3) and two equivalent Mn(2) atoms. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mn(2), one Mn(3), and one Mn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn7CrO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.823
_cell_length_b   5.825
_cell_length_c   8.239
_cell_angle_alpha   89.886
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   279.502
_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
  Mn  Mn0  1  0.500  0.000  0.000  1.0
  Mn  Mn1  1  0.250  0.750  0.250  1.0
  Mn  Mn2  1  0.750  0.750  0.250  1.0
  Mn  Mn3  1  0.000  0.000  0.500  1.0
  Mn  Mn4  1  0.000  0.500  0.500  1.0
  Mn  Mn5  1  0.250  0.250  0.750  1.0
  Mn  Mn6  1  0.750  0.250  0.750  1.0
  Cr  Cr7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.720  0.751  0.016  1.0
  O  O9  1  0.280  0.751  0.016  1.0
  O  O10  1  0.500  0.531  0.236  1.0
  O  O11  1  0.500  0.970  0.235  1.0
  O  O12  1  0.000  0.530  0.265  1.0
  O  O13  1  0.000  0.971  0.265  1.0
  O  O14  1  0.220  0.750  0.486  1.0
  O  O15  1  0.780  0.750  0.486  1.0
  O  O16  1  0.220  0.250  0.514  1.0
  O  O17  1  0.780  0.250  0.514  1.0
  O  O18  1  0.000  0.470  0.735  1.0
  O  O19  1  0.000  0.029  0.735  1.0
  O  O20  1  0.500  0.469  0.764  1.0
  O  O21  1  0.500  0.030  0.765  1.0
  O  O22  1  0.280  0.249  0.984  1.0
  O  O23  1  0.720  0.249  0.984  1.0
[/CIF]
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The material structure described by CrMn7O16 is trigonal omega-derived structured and crystallizes in the monoclinic P2/m space group. Cr(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CrO6 octahedra that share edges with two equivalent Mn(1)O6 octahedra and edges with four equivalent Mn(2)O6 octahedra. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form MnO6 octahedra that share edges with two equivalent Cr(1)O6 octahedra and edges with four equivalent Mn(2)O6 octahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form MnO6 octahedra that share  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra,  an edgeedge with one Mn(4)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. In the third Mn site, Mn(3) is bonded to two equivalent O(5) and four equivalent O(6) atoms to form edge-sharing MnO6 octahedra. In the fourth Mn site, Mn(4) is bonded to two equivalent O(4) and four equivalent O(6) atoms to form edge-sharing MnO6 octahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Cr(1), one Mn(1), and one Mn(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Cr(1) and two equivalent Mn(2) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mn(1) and two equivalent Mn(2) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mn(4) and two equivalent Mn(2) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mn(3) and two equivalent Mn(2) atoms. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mn(2), one Mn(3), and one Mn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn7CrO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.823
_cell_length_b   5.825
_cell_length_c   8.239
_cell_angle_alpha   89.886
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   279.502
_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
  Mn  Mn0  1  0.500  0.000  0.000  1.0
  Mn  Mn1  1  0.250  0.750  0.250  1.0
  Mn  Mn2  1  0.750  0.750  0.250  1.0
  Mn  Mn3  1  0.000  0.000  0.500  1.0
  Mn  Mn4  1  0.000  0.500  0.500  1.0
  Mn  Mn5  1  0.250  0.250  0.750  1.0
  Mn  Mn6  1  0.750  0.250  0.750  1.0
  Cr  Cr7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.720  0.751  0.016  1.0
  O  O9  1  0.280  0.751  0.016  1.0
  O  O10  1  0.500  0.531  0.236  1.0
  O  O11  1  0.500  0.970  0.235  1.0
  O  O12  1  0.000  0.530  0.265  1.0
  O  O13  1  0.000  0.971  0.265  1.0
  O  O14  1  0.220  0.750  0.486  1.0
  O  O15  1  0.780  0.750  0.486  1.0
  O  O16  1  0.220  0.250  0.514  1.0
  O  O17  1  0.780  0.250  0.514  1.0
  O  O18  1  0.000  0.470  0.735  1.0
  O  O19  1  0.000  0.029  0.735  1.0
  O  O20  1  0.500  0.469  0.764  1.0
  O  O21  1  0.500  0.030  0.765  1.0
  O  O22  1  0.280  0.249  0.984  1.0
  O  O23  1  0.720  0.249  0.984  1.0
[/CIF]
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