The crystal structure described by PbMn3Mn4O12 crystallizes in the monoclinic P2 space group. There are ten inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a square co-planar geometry to two equivalent O(10) and two equivalent O(11) atoms. In the second Mn site, Mn(2) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. In the third Mn site, Mn(3) is bonded in a rectangular see-saw-like geometry to two equivalent O(6) and two equivalent O(7) atoms. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(11), one O(12), one O(3), one O(6), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Mn(9)O6 octahedra, corners with four equivalent Mn(10)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 41-44°. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(10)O6 octahedra, corners with four equivalent Mn(9)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 40-44°. In the sixth Mn site, Mn(6) is bonded in a square co-planar geometry to two equivalent O(12) and two equivalent O(9) atoms. In the seventh Mn site, Mn(7) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. In the eighth Mn site, Mn(8) is bonded in a square co-planar geometry to two equivalent O(5) and two equivalent O(8) atoms. In the ninth Mn site, Mn(9) is bonded to one O(11), one O(12), one O(2), one O(4), one O(5), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Mn(4)O6 octahedra, corners with four equivalent Mn(5)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 40-44°. In the tenth Mn site, Mn(10) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(5)O6 octahedra, corners with four equivalent Mn(4)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 41-42°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(12), two equivalent O(4), two equivalent O(5), two equivalent O(8), and two equivalent O(9) atoms to form distorted PbO12 cuboctahedra that share faces with two equivalent Mn(10)O6 octahedra, faces with two equivalent Mn(4)O6 octahedra, faces with two equivalent Mn(5)O6 octahedra, and faces with two equivalent Mn(9)O6 octahedra. In the second Pb site, Pb(2) is bonded to two equivalent O(10), two equivalent O(11), two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted PbO12 cuboctahedra that share faces with two equivalent Mn(10)O6 octahedra, faces with two equivalent Mn(4)O6 octahedra, faces with two equivalent Mn(5)O6 octahedra, and faces with two equivalent Mn(9)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(10), one Mn(4), one Mn(7), and one Pb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(5), one Mn(9), and one Pb(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(10), one Mn(2), one Mn(4), and one Pb(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(5), one Mn(7), one Mn(9), and one Pb(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(5), one Mn(8), one Mn(9), and one Pb(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(3), one Mn(4), and one Pb(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mn(3), one Mn(5), one Mn(9), and one Pb(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(4), one Mn(8), and one Pb(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(5), one Mn(6), and one Pb(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(10), one Mn(5), and one Pb(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(4), one Mn(9), and one Pb(2) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Mn(4), one Mn(6), one Mn(9), and one Pb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn7PbO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.687
_cell_length_b   7.488
_cell_length_c   7.496
_cell_angle_alpha   90.022
_cell_angle_beta   90.015
_cell_angle_gamma   89.974
_symmetry_Int_Tables_number   1
_cell_volume   431.474
_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  1.000  0.500  0.509  1.0
  Mn  Mn1  1  0.500  1.000  0.495  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Mn  Mn3  1  0.751  0.750  0.750  1.0
  Mn  Mn4  1  0.750  0.250  0.250  1.0
  Mn  Mn5  1  0.250  0.750  0.250  1.0
  Mn  Mn6  1  0.249  0.250  0.750  1.0
  Mn  Mn7  1  0.500  0.000  0.988  1.0
  Mn  Mn8  1  0.000  0.500  0.005  1.0
  Mn  Mn9  1  0.000  0.000  0.501  1.0
  Mn  Mn10  1  0.251  0.249  0.250  1.0
  Mn  Mn11  1  0.250  0.750  0.750  1.0
  Mn  Mn12  1  0.750  0.250  0.750  1.0
  Mn  Mn13  1  0.749  0.751  0.250  1.0
  Pb  Pb14  1  1.000  0.000  0.005  1.0
  Pb  Pb15  1  0.500  0.500  0.494  1.0
  O  O16  1  0.982  0.686  0.825  1.0
  O  O17  1  0.517  0.183  0.315  1.0
  O  O18  1  0.517  0.814  0.676  1.0
  O  O19  1  0.982  0.317  0.185  1.0
  O  O20  1  0.483  0.186  0.675  1.0
  O  O21  1  0.018  0.684  0.185  1.0
  O  O22  1  0.018  0.313  0.825  1.0
  O  O23  1  0.483  0.816  0.315  1.0
  O  O24  1  0.176  0.984  0.317  1.0
  O  O25  1  0.680  0.501  0.811  1.0
  O  O26  1  0.324  0.515  0.184  1.0
  O  O27  1  0.820  0.999  0.690  1.0
  O  O28  1  0.320  0.499  0.811  1.0
  O  O29  1  0.824  0.016  0.316  1.0
  O  O30  1  0.180  0.001  0.690  1.0
  O  O31  1  0.676  0.485  0.184  1.0
  O  O32  1  0.690  0.178  0.000  1.0
  O  O33  1  0.190  0.677  0.499  1.0
  O  O34  1  0.810  0.322  0.500  1.0
  O  O35  1  0.310  0.822  0.001  1.0
  O  O36  1  0.177  0.315  0.516  1.0
  O  O37  1  0.678  0.816  0.984  1.0
  O  O38  1  0.322  0.184  0.983  1.0
  O  O39  1  0.823  0.684  0.516  1.0
[/CIF]
.
The crystal structure described by PbMn3Mn4O12 crystallizes in the monoclinic P2 space group. There are ten inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a square co-planar geometry to two equivalent O(10) and two equivalent O(11) atoms. In the second Mn site, Mn(2) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. In the third Mn site, Mn(3) is bonded in a rectangular see-saw-like geometry to two equivalent O(6) and two equivalent O(7) atoms. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(11), one O(12), one O(3), one O(6), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Mn(9)O6 octahedra, corners with four equivalent Mn(10)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 41-44°. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(10)O6 octahedra, corners with four equivalent Mn(9)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 40-44°. In the sixth Mn site, Mn(6) is bonded in a square co-planar geometry to two equivalent O(12) and two equivalent O(9) atoms. In the seventh Mn site, Mn(7) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. In the eighth Mn site, Mn(8) is bonded in a square co-planar geometry to two equivalent O(5) and two equivalent O(8) atoms. In the ninth Mn site, Mn(9) is bonded to one O(11), one O(12), one O(2), one O(4), one O(5), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Mn(4)O6 octahedra, corners with four equivalent Mn(5)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 40-44°. In the tenth Mn site, Mn(10) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(5)O6 octahedra, corners with four equivalent Mn(4)O6 octahedra,  a faceface with one Pb(1)O12 cuboctahedra, and  a faceface with one Pb(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 41-42°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(12), two equivalent O(4), two equivalent O(5), two equivalent O(8), and two equivalent O(9) atoms to form distorted PbO12 cuboctahedra that share faces with two equivalent Mn(10)O6 octahedra, faces with two equivalent Mn(4)O6 octahedra, faces with two equivalent Mn(5)O6 octahedra, and faces with two equivalent Mn(9)O6 octahedra. In the second Pb site, Pb(2) is bonded to two equivalent O(10), two equivalent O(11), two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted PbO12 cuboctahedra that share faces with two equivalent Mn(10)O6 octahedra, faces with two equivalent Mn(4)O6 octahedra, faces with two equivalent Mn(5)O6 octahedra, and faces with two equivalent Mn(9)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(10), one Mn(4), one Mn(7), and one Pb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(5), one Mn(9), and one Pb(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(10), one Mn(2), one Mn(4), and one Pb(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(5), one Mn(7), one Mn(9), and one Pb(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(5), one Mn(8), one Mn(9), and one Pb(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(3), one Mn(4), and one Pb(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mn(3), one Mn(5), one Mn(9), and one Pb(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(4), one Mn(8), and one Pb(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(5), one Mn(6), and one Pb(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(10), one Mn(5), and one Pb(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(4), one Mn(9), and one Pb(2) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Mn(4), one Mn(6), one Mn(9), and one Pb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn7PbO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.687
_cell_length_b   7.488
_cell_length_c   7.496
_cell_angle_alpha   90.022
_cell_angle_beta   90.015
_cell_angle_gamma   89.974
_symmetry_Int_Tables_number   1
_cell_volume   431.474
_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  1.000  0.500  0.509  1.0
  Mn  Mn1  1  0.500  1.000  0.495  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Mn  Mn3  1  0.751  0.750  0.750  1.0
  Mn  Mn4  1  0.750  0.250  0.250  1.0
  Mn  Mn5  1  0.250  0.750  0.250  1.0
  Mn  Mn6  1  0.249  0.250  0.750  1.0
  Mn  Mn7  1  0.500  0.000  0.988  1.0
  Mn  Mn8  1  0.000  0.500  0.005  1.0
  Mn  Mn9  1  0.000  0.000  0.501  1.0
  Mn  Mn10  1  0.251  0.249  0.250  1.0
  Mn  Mn11  1  0.250  0.750  0.750  1.0
  Mn  Mn12  1  0.750  0.250  0.750  1.0
  Mn  Mn13  1  0.749  0.751  0.250  1.0
  Pb  Pb14  1  1.000  0.000  0.005  1.0
  Pb  Pb15  1  0.500  0.500  0.494  1.0
  O  O16  1  0.982  0.686  0.825  1.0
  O  O17  1  0.517  0.183  0.315  1.0
  O  O18  1  0.517  0.814  0.676  1.0
  O  O19  1  0.982  0.317  0.185  1.0
  O  O20  1  0.483  0.186  0.675  1.0
  O  O21  1  0.018  0.684  0.185  1.0
  O  O22  1  0.018  0.313  0.825  1.0
  O  O23  1  0.483  0.816  0.315  1.0
  O  O24  1  0.176  0.984  0.317  1.0
  O  O25  1  0.680  0.501  0.811  1.0
  O  O26  1  0.324  0.515  0.184  1.0
  O  O27  1  0.820  0.999  0.690  1.0
  O  O28  1  0.320  0.499  0.811  1.0
  O  O29  1  0.824  0.016  0.316  1.0
  O  O30  1  0.180  0.001  0.690  1.0
  O  O31  1  0.676  0.485  0.184  1.0
  O  O32  1  0.690  0.178  0.000  1.0
  O  O33  1  0.190  0.677  0.499  1.0
  O  O34  1  0.810  0.322  0.500  1.0
  O  O35  1  0.310  0.822  0.001  1.0
  O  O36  1  0.177  0.315  0.516  1.0
  O  O37  1  0.678  0.816  0.984  1.0
  O  O38  1  0.322  0.184  0.983  1.0
  O  O39  1  0.823  0.684  0.516  1.0
[/CIF]
.