The crystal structure described by CrMn2Pb2O9 crystallizes in the triclinic P-1 space group. Cr(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(5), one O(6), one O(8), one O(9), and two equivalent O(7) atoms to form edge-sharing MnO6 octahedra. In the second Mn site, Mn(2) is bonded to one O(8), one O(9), two equivalent O(5), and two equivalent O(6) atoms to form edge-sharing MnO6 octahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(5), and two equivalent O(1) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cr(1) and two equivalent Pb(2) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cr(1), one Pb(1), and one Pb(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cr(1), one Pb(1), and one Pb(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Cr(1) and one Pb(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mn(1), two equivalent Mn(2), and one Pb(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1) and two equivalent Mn(2) atoms. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and one Pb(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one Pb(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Pb(1) atom. is represented by the CIF file [CIF]
data_Mn2CrPb2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.016
_cell_length_b   7.559
_cell_length_c   10.346
_cell_angle_alpha   91.697
_cell_angle_beta   99.058
_cell_angle_gamma   109.327
_symmetry_Int_Tables_number   1
_cell_volume   364.102
_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
  Mn  Mn0  1  0.402  0.805  0.501  1.0
  Mn  Mn1  1  0.598  0.195  0.499  1.0
  Mn  Mn2  1  0.804  0.606  0.507  1.0
  Mn  Mn3  1  0.196  0.394  0.493  1.0
  Cr  Cr4  1  0.189  0.767  0.048  1.0
  Cr  Cr5  1  0.811  0.233  0.952  1.0
  Pb  Pb6  1  0.896  0.960  0.258  1.0
  Pb  Pb7  1  0.104  0.040  0.742  1.0
  Pb  Pb8  1  0.508  0.390  0.179  1.0
  Pb  Pb9  1  0.492  0.610  0.821  1.0
  O  O10  1  0.452  0.676  0.067  1.0
  O  O11  1  0.548  0.324  0.933  1.0
  O  O12  1  0.948  0.652  0.132  1.0
  O  O13  1  0.052  0.348  0.868  1.0
  O  O14  1  0.052  0.739  0.888  1.0
  O  O15  1  0.948  0.261  0.112  1.0
  O  O16  1  0.307  0.989  0.106  1.0
  O  O17  1  0.693  0.011  0.894  1.0
  O  O18  1  0.171  0.610  0.598  1.0
  O  O19  1  0.829  0.390  0.402  1.0
  O  O20  1  0.555  0.407  0.596  1.0
  O  O21  1  0.445  0.593  0.404  1.0
  O  O22  1  0.578  0.985  0.396  1.0
  O  O23  1  0.422  0.015  0.604  1.0
  O  O24  1  0.741  0.787  0.610  1.0
  O  O25  1  0.259  0.213  0.390  1.0
  O  O26  1  0.032  0.771  0.410  1.0
  O  O27  1  0.968  0.229  0.590  1.0
[/CIF]
.
The crystal structure described by CrMn2Pb2O9 crystallizes in the triclinic P-1 space group. Cr(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(5), one O(6), one O(8), one O(9), and two equivalent O(7) atoms to form edge-sharing MnO6 octahedra. In the second Mn site, Mn(2) is bonded to one O(8), one O(9), two equivalent O(5), and two equivalent O(6) atoms to form edge-sharing MnO6 octahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(5), and two equivalent O(1) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cr(1) and two equivalent Pb(2) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cr(1), one Pb(1), and one Pb(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cr(1), one Pb(1), and one Pb(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Cr(1) and one Pb(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mn(1), two equivalent Mn(2), and one Pb(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1) and two equivalent Mn(2) atoms. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and one Pb(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one Pb(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Pb(1) atom. is represented by the CIF file [CIF]
data_Mn2CrPb2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.016
_cell_length_b   7.559
_cell_length_c   10.346
_cell_angle_alpha   91.697
_cell_angle_beta   99.058
_cell_angle_gamma   109.327
_symmetry_Int_Tables_number   1
_cell_volume   364.102
_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
  Mn  Mn0  1  0.402  0.805  0.501  1.0
  Mn  Mn1  1  0.598  0.195  0.499  1.0
  Mn  Mn2  1  0.804  0.606  0.507  1.0
  Mn  Mn3  1  0.196  0.394  0.493  1.0
  Cr  Cr4  1  0.189  0.767  0.048  1.0
  Cr  Cr5  1  0.811  0.233  0.952  1.0
  Pb  Pb6  1  0.896  0.960  0.258  1.0
  Pb  Pb7  1  0.104  0.040  0.742  1.0
  Pb  Pb8  1  0.508  0.390  0.179  1.0
  Pb  Pb9  1  0.492  0.610  0.821  1.0
  O  O10  1  0.452  0.676  0.067  1.0
  O  O11  1  0.548  0.324  0.933  1.0
  O  O12  1  0.948  0.652  0.132  1.0
  O  O13  1  0.052  0.348  0.868  1.0
  O  O14  1  0.052  0.739  0.888  1.0
  O  O15  1  0.948  0.261  0.112  1.0
  O  O16  1  0.307  0.989  0.106  1.0
  O  O17  1  0.693  0.011  0.894  1.0
  O  O18  1  0.171  0.610  0.598  1.0
  O  O19  1  0.829  0.390  0.402  1.0
  O  O20  1  0.555  0.407  0.596  1.0
  O  O21  1  0.445  0.593  0.404  1.0
  O  O22  1  0.578  0.985  0.396  1.0
  O  O23  1  0.422  0.015  0.604  1.0
  O  O24  1  0.741  0.787  0.610  1.0
  O  O25  1  0.259  0.213  0.390  1.0
  O  O26  1  0.032  0.771  0.410  1.0
  O  O27  1  0.968  0.229  0.590  1.0
[/CIF]
.