The structure described by CeMn10Cu crystallizes in the orthorhombic Cmm2 space group. Ce(1) is bonded in a 20-coordinate geometry to two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(5), two equivalent Mn(6), two equivalent Mn(7), four equivalent Mn(3), four equivalent Mn(4), and two equivalent Cu(1) atoms. There are nine inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted single-bond geometry to two equivalent Ce(1), one Mn(1), one Mn(6), two equivalent Mn(5), two equivalent Mn(7), two equivalent Mn(8), four equivalent Mn(4), and one Cu(1) atom. In the second Mn site, Mn(2) is bonded in a 15-coordinate geometry to two equivalent Ce(1), one Mn(2), one Mn(5), one Mn(7), two equivalent Mn(6), two equivalent Mn(9), four equivalent Mn(3), and two equivalent Cu(1) atoms. In the third Mn site, Mn(3) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Mn(3), one Mn(5), one Mn(6), one Mn(7), one Mn(9), two equivalent Mn(2), two equivalent Mn(4), and one Cu(1) atom. In the fourth Mn site, Mn(4) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Mn(4), one Mn(5), one Mn(6), one Mn(7), one Mn(8), two equivalent Mn(1), two equivalent Mn(3), and one Cu(1) atom. In the fifth Mn site, Mn(5) is bonded to two equivalent Ce(1), one Mn(2), one Mn(8), two equivalent Mn(1), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(7) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with three equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(5)Ce2Mn10 cuboctahedra,  an edgeedge with one Mn(7)Ce2Mn10 cuboctahedra,  a faceface with one Mn(5)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with two equivalent Mn(8)Mn12 cuboctahedra. In the sixth Mn site, Mn(6) is bonded in a 2-coordinate geometry to two equivalent Ce(1), one Mn(1), one Mn(9), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Cu(1) atoms. In the seventh Mn site, Mn(7) is bonded to two equivalent Ce(1), one Mn(2), one Mn(8), two equivalent Mn(1), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(5) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with three equivalent Mn(5)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(7)Ce2Mn10 cuboctahedra,  an edgeedge with one Mn(5)Ce2Mn10 cuboctahedra,  a faceface with one Mn(7)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(5)Ce2Mn10 cuboctahedra, and faces with two equivalent Mn(8)Mn12 cuboctahedra. In the eighth Mn site, Mn(8) is bonded to two equivalent Mn(5), two equivalent Mn(7), four equivalent Mn(1), and four equivalent Mn(4) atoms to form MnMn12 cuboctahedra that share edges with two equivalent Mn(8)Mn12 cuboctahedra, faces with four equivalent Mn(5)Ce2Mn10 cuboctahedra, and faces with four equivalent Mn(7)Ce2Mn10 cuboctahedra. In the ninth Mn site, Mn(9) is bonded in a 12-coordinate geometry to two equivalent Mn(6), four equivalent Mn(2), four equivalent Mn(3), and two equivalent Cu(1) atoms. Cu(1) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Mn(1), one Mn(9), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(6) atoms. is represented by the CIF file [CIF]
data_CeMn10Cu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.743
_cell_length_b   8.210
_cell_length_c   8.210
_cell_angle_alpha   89.751
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   319.701
_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
  Ce  Ce0  1  0.994  0.500  0.500  1.0
  Ce  Ce1  1  0.994  0.000  0.000  1.0
  Mn  Mn2  1  0.000  0.113  0.613  1.0
  Mn  Mn3  1  0.000  0.887  0.387  1.0
  Mn  Mn4  1  0.999  0.382  0.118  1.0
  Mn  Mn5  1  0.999  0.618  0.882  1.0
  Mn  Mn6  1  0.494  0.572  0.718  1.0
  Mn  Mn7  1  0.494  0.428  0.282  1.0
  Mn  Mn8  1  0.492  0.937  0.221  1.0
  Mn  Mn9  1  0.492  0.063  0.779  1.0
  Mn  Mn10  1  0.492  0.721  0.437  1.0
  Mn  Mn11  1  0.492  0.279  0.563  1.0
  Mn  Mn12  1  0.494  0.218  0.072  1.0
  Mn  Mn13  1  0.494  0.782  0.928  1.0
  Mn  Mn14  1  0.770  0.177  0.323  1.0
  Mn  Mn15  1  0.770  0.823  0.677  1.0
  Mn  Mn16  1  0.262  0.678  0.178  1.0
  Mn  Mn17  1  0.262  0.322  0.822  1.0
  Mn  Mn18  1  0.230  0.823  0.677  1.0
  Mn  Mn19  1  0.230  0.177  0.323  1.0
  Mn  Mn20  1  0.498  0.000  0.500  1.0
  Mn  Mn21  1  0.498  0.500  0.000  1.0
  Cu  Cu22  1  0.774  0.321  0.821  1.0
  Cu  Cu23  1  0.774  0.679  0.179  1.0
[/CIF]
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The structure described by CeMn10Cu crystallizes in the orthorhombic Cmm2 space group. Ce(1) is bonded in a 20-coordinate geometry to two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(5), two equivalent Mn(6), two equivalent Mn(7), four equivalent Mn(3), four equivalent Mn(4), and two equivalent Cu(1) atoms. There are nine inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted single-bond geometry to two equivalent Ce(1), one Mn(1), one Mn(6), two equivalent Mn(5), two equivalent Mn(7), two equivalent Mn(8), four equivalent Mn(4), and one Cu(1) atom. In the second Mn site, Mn(2) is bonded in a 15-coordinate geometry to two equivalent Ce(1), one Mn(2), one Mn(5), one Mn(7), two equivalent Mn(6), two equivalent Mn(9), four equivalent Mn(3), and two equivalent Cu(1) atoms. In the third Mn site, Mn(3) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Mn(3), one Mn(5), one Mn(6), one Mn(7), one Mn(9), two equivalent Mn(2), two equivalent Mn(4), and one Cu(1) atom. In the fourth Mn site, Mn(4) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Mn(4), one Mn(5), one Mn(6), one Mn(7), one Mn(8), two equivalent Mn(1), two equivalent Mn(3), and one Cu(1) atom. In the fifth Mn site, Mn(5) is bonded to two equivalent Ce(1), one Mn(2), one Mn(8), two equivalent Mn(1), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(7) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with three equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(5)Ce2Mn10 cuboctahedra,  an edgeedge with one Mn(7)Ce2Mn10 cuboctahedra,  a faceface with one Mn(5)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with two equivalent Mn(8)Mn12 cuboctahedra. In the sixth Mn site, Mn(6) is bonded in a 2-coordinate geometry to two equivalent Ce(1), one Mn(1), one Mn(9), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Cu(1) atoms. In the seventh Mn site, Mn(7) is bonded to two equivalent Ce(1), one Mn(2), one Mn(8), two equivalent Mn(1), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(5) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with three equivalent Mn(5)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(7)Ce2Mn10 cuboctahedra,  an edgeedge with one Mn(5)Ce2Mn10 cuboctahedra,  a faceface with one Mn(7)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(5)Ce2Mn10 cuboctahedra, and faces with two equivalent Mn(8)Mn12 cuboctahedra. In the eighth Mn site, Mn(8) is bonded to two equivalent Mn(5), two equivalent Mn(7), four equivalent Mn(1), and four equivalent Mn(4) atoms to form MnMn12 cuboctahedra that share edges with two equivalent Mn(8)Mn12 cuboctahedra, faces with four equivalent Mn(5)Ce2Mn10 cuboctahedra, and faces with four equivalent Mn(7)Ce2Mn10 cuboctahedra. In the ninth Mn site, Mn(9) is bonded in a 12-coordinate geometry to two equivalent Mn(6), four equivalent Mn(2), four equivalent Mn(3), and two equivalent Cu(1) atoms. Cu(1) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Mn(1), one Mn(9), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(6) atoms. is represented by the CIF file [CIF]
data_CeMn10Cu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.743
_cell_length_b   8.210
_cell_length_c   8.210
_cell_angle_alpha   89.751
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   319.701
_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
  Ce  Ce0  1  0.994  0.500  0.500  1.0
  Ce  Ce1  1  0.994  0.000  0.000  1.0
  Mn  Mn2  1  0.000  0.113  0.613  1.0
  Mn  Mn3  1  0.000  0.887  0.387  1.0
  Mn  Mn4  1  0.999  0.382  0.118  1.0
  Mn  Mn5  1  0.999  0.618  0.882  1.0
  Mn  Mn6  1  0.494  0.572  0.718  1.0
  Mn  Mn7  1  0.494  0.428  0.282  1.0
  Mn  Mn8  1  0.492  0.937  0.221  1.0
  Mn  Mn9  1  0.492  0.063  0.779  1.0
  Mn  Mn10  1  0.492  0.721  0.437  1.0
  Mn  Mn11  1  0.492  0.279  0.563  1.0
  Mn  Mn12  1  0.494  0.218  0.072  1.0
  Mn  Mn13  1  0.494  0.782  0.928  1.0
  Mn  Mn14  1  0.770  0.177  0.323  1.0
  Mn  Mn15  1  0.770  0.823  0.677  1.0
  Mn  Mn16  1  0.262  0.678  0.178  1.0
  Mn  Mn17  1  0.262  0.322  0.822  1.0
  Mn  Mn18  1  0.230  0.823  0.677  1.0
  Mn  Mn19  1  0.230  0.177  0.323  1.0
  Mn  Mn20  1  0.498  0.000  0.500  1.0
  Mn  Mn21  1  0.498  0.500  0.000  1.0
  Cu  Cu22  1  0.774  0.321  0.821  1.0
  Cu  Cu23  1  0.774  0.679  0.179  1.0
[/CIF]
.