The structure described by Ce2Mn17C2 crystallizes in the monoclinic C2/m space group. Ce(1) is bonded in a distorted bent 120 degrees geometry to one Mn(1), one Mn(6), two equivalent Mn(2), two equivalent Mn(7), three equivalent Mn(5), and two equivalent C(1) atoms. There are seven inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 14-coordinate geometry to one Ce(1), one Mn(1), one Mn(5), one Mn(6), two equivalent Mn(2), two equivalent Mn(4), two equivalent Mn(7), and four equivalent Mn(3) atoms. In the second Mn site, Mn(2) is bonded to two equivalent Ce(1), two equivalent Mn(1), two equivalent Mn(3), two equivalent Mn(4), two equivalent Mn(5), and two equivalent Mn(7) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with two equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(6)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with four equivalent C(1)Ce2Mn4 octahedra,  an edgeedge with one Mn(2)Ce2Mn10 cuboctahedra, edges with two equivalent Mn(7)Ce2Mn10 cuboctahedra, edges with two equivalent C(1)Ce2Mn4 octahedra,  a faceface with one Mn(2)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(6)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with four equivalent Mn(5)Ce3Mn9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-28°. In the third Mn site, Mn(3) is bonded in a single-bond geometry to one Mn(2), one Mn(5), one Mn(6), one Mn(7), two equivalent Mn(1), and one C(1) atom. In the fourth Mn site, Mn(4) is bonded in a single-bond geometry to one Mn(1), one Mn(2), one Mn(5), one Mn(6), one Mn(7), and one C(1) atom. In the fifth Mn site, Mn(5) is bonded to three equivalent Ce(1), one Mn(1), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(7) atoms to form distorted MnCe3Mn9 cuboctahedra that share corners with two equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with three equivalent Mn(6)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with four equivalent C(1)Ce2Mn4 octahedra,  an edgeedge with one Mn(6)Ce2Mn10 cuboctahedra,  an edgeedge with one Mn(5)Ce3Mn9 cuboctahedra, edges with two equivalent Mn(7)Ce2Mn10 cuboctahedra,  a faceface with one Mn(6)Ce2Mn10 cuboctahedra,  a faceface with one Mn(5)Ce3Mn9 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, faces with four equivalent Mn(2)Ce2Mn10 cuboctahedra, and faces with two equivalent C(1)Ce2Mn4 octahedra. The corner-sharing octahedral tilt angles range from 61-70°. In the sixth Mn site, Mn(6) is bonded to two equivalent Ce(1), two equivalent Mn(1), four equivalent Mn(3), and four equivalent Mn(4) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with four equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with six equivalent Mn(5)Ce3Mn9 cuboctahedra, edges with two equivalent Mn(5)Ce3Mn9 cuboctahedra, faces with two equivalent Mn(5)Ce3Mn9 cuboctahedra, faces with four equivalent Mn(2)Ce2Mn10 cuboctahedra, faces with four equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with four equivalent C(1)Ce2Mn4 octahedra. In the seventh Mn site, Mn(7) is bonded to two equivalent Ce(1), two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(5) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with two equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(6)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with two equivalent C(1)Ce2Mn4 octahedra, edges with two equivalent Mn(2)Ce2Mn10 cuboctahedra, edges with two equivalent Mn(5)Ce3Mn9 cuboctahedra, faces with two equivalent Mn(2)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(6)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(5)Ce3Mn9 cuboctahedra, and faces with two equivalent C(1)Ce2Mn4 octahedra. The corner-sharing octahedral tilt angles are 47°. C(1) is bonded to two equivalent Ce(1), two equivalent Mn(3), and two equivalent Mn(4) atoms to form CCe2Mn4 octahedra that share corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with two equivalent C(1)Ce2Mn4 octahedra, edges with two equivalent Mn(2)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(6)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with two equivalent Mn(5)Ce3Mn9 cuboctahedra. The corner-sharing octahedral tilt angles are 63°. is represented by the CIF file [CIF]
data_Ce2Mn17C2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.421
_cell_length_b   6.426
_cell_length_c   6.421
_cell_angle_alpha   83.643
_cell_angle_beta   84.463
_cell_angle_gamma   83.643
_symmetry_Int_Tables_number   1
_cell_volume   260.711
_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
  Ce  Ce0  1  0.644  0.659  0.644  1.0
  Ce  Ce1  1  0.356  0.341  0.356  1.0
  Mn  Mn2  1  0.904  0.903  0.904  1.0
  Mn  Mn3  1  0.096  0.097  0.096  1.0
  Mn  Mn4  1  0.729  0.000  0.271  1.0
  Mn  Mn5  1  0.996  0.279  0.722  1.0
  Mn  Mn6  1  0.278  0.721  0.004  1.0
  Mn  Mn7  1  0.004  0.721  0.278  1.0
  Mn  Mn8  1  0.722  0.279  0.996  1.0
  Mn  Mn9  1  0.271  0.000  0.729  1.0
  Mn  Mn10  1  0.339  0.340  0.861  1.0
  Mn  Mn11  1  0.350  0.865  0.350  1.0
  Mn  Mn12  1  0.861  0.340  0.339  1.0
  Mn  Mn13  1  0.661  0.660  0.139  1.0
  Mn  Mn14  1  0.650  0.135  0.650  1.0
  Mn  Mn15  1  0.139  0.660  0.661  1.0
  Mn  Mn16  1  0.000  0.500  0.000  1.0
  Mn  Mn17  1  0.500  0.000  0.000  1.0
  Mn  Mn18  1  0.000  0.000  0.500  1.0
  C  C19  1  0.000  0.500  0.500  1.0
  C  C20  1  0.500  0.500  0.000  1.0
[/CIF]
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The structure described by Ce2Mn17C2 crystallizes in the monoclinic C2/m space group. Ce(1) is bonded in a distorted bent 120 degrees geometry to one Mn(1), one Mn(6), two equivalent Mn(2), two equivalent Mn(7), three equivalent Mn(5), and two equivalent C(1) atoms. There are seven inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 14-coordinate geometry to one Ce(1), one Mn(1), one Mn(5), one Mn(6), two equivalent Mn(2), two equivalent Mn(4), two equivalent Mn(7), and four equivalent Mn(3) atoms. In the second Mn site, Mn(2) is bonded to two equivalent Ce(1), two equivalent Mn(1), two equivalent Mn(3), two equivalent Mn(4), two equivalent Mn(5), and two equivalent Mn(7) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with two equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(6)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with four equivalent C(1)Ce2Mn4 octahedra,  an edgeedge with one Mn(2)Ce2Mn10 cuboctahedra, edges with two equivalent Mn(7)Ce2Mn10 cuboctahedra, edges with two equivalent C(1)Ce2Mn4 octahedra,  a faceface with one Mn(2)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(6)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with four equivalent Mn(5)Ce3Mn9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-28°. In the third Mn site, Mn(3) is bonded in a single-bond geometry to one Mn(2), one Mn(5), one Mn(6), one Mn(7), two equivalent Mn(1), and one C(1) atom. In the fourth Mn site, Mn(4) is bonded in a single-bond geometry to one Mn(1), one Mn(2), one Mn(5), one Mn(6), one Mn(7), and one C(1) atom. In the fifth Mn site, Mn(5) is bonded to three equivalent Ce(1), one Mn(1), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(7) atoms to form distorted MnCe3Mn9 cuboctahedra that share corners with two equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with three equivalent Mn(6)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with four equivalent C(1)Ce2Mn4 octahedra,  an edgeedge with one Mn(6)Ce2Mn10 cuboctahedra,  an edgeedge with one Mn(5)Ce3Mn9 cuboctahedra, edges with two equivalent Mn(7)Ce2Mn10 cuboctahedra,  a faceface with one Mn(6)Ce2Mn10 cuboctahedra,  a faceface with one Mn(5)Ce3Mn9 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, faces with four equivalent Mn(2)Ce2Mn10 cuboctahedra, and faces with two equivalent C(1)Ce2Mn4 octahedra. The corner-sharing octahedral tilt angles range from 61-70°. In the sixth Mn site, Mn(6) is bonded to two equivalent Ce(1), two equivalent Mn(1), four equivalent Mn(3), and four equivalent Mn(4) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with four equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with six equivalent Mn(5)Ce3Mn9 cuboctahedra, edges with two equivalent Mn(5)Ce3Mn9 cuboctahedra, faces with two equivalent Mn(5)Ce3Mn9 cuboctahedra, faces with four equivalent Mn(2)Ce2Mn10 cuboctahedra, faces with four equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with four equivalent C(1)Ce2Mn4 octahedra. In the seventh Mn site, Mn(7) is bonded to two equivalent Ce(1), two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(3), two equivalent Mn(4), and two equivalent Mn(5) atoms to form distorted MnCe2Mn10 cuboctahedra that share corners with two equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(6)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with two equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with two equivalent C(1)Ce2Mn4 octahedra, edges with two equivalent Mn(2)Ce2Mn10 cuboctahedra, edges with two equivalent Mn(5)Ce3Mn9 cuboctahedra, faces with two equivalent Mn(2)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(6)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(5)Ce3Mn9 cuboctahedra, and faces with two equivalent C(1)Ce2Mn4 octahedra. The corner-sharing octahedral tilt angles are 47°. C(1) is bonded to two equivalent Ce(1), two equivalent Mn(3), and two equivalent Mn(4) atoms to form CCe2Mn4 octahedra that share corners with two equivalent Mn(7)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(2)Ce2Mn10 cuboctahedra, corners with four equivalent Mn(5)Ce3Mn9 cuboctahedra, corners with two equivalent C(1)Ce2Mn4 octahedra, edges with two equivalent Mn(2)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(6)Ce2Mn10 cuboctahedra, faces with two equivalent Mn(7)Ce2Mn10 cuboctahedra, and faces with two equivalent Mn(5)Ce3Mn9 cuboctahedra. The corner-sharing octahedral tilt angles are 63°. is represented by the CIF file [CIF]
data_Ce2Mn17C2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.421
_cell_length_b   6.426
_cell_length_c   6.421
_cell_angle_alpha   83.643
_cell_angle_beta   84.463
_cell_angle_gamma   83.643
_symmetry_Int_Tables_number   1
_cell_volume   260.711
_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
  Ce  Ce0  1  0.644  0.659  0.644  1.0
  Ce  Ce1  1  0.356  0.341  0.356  1.0
  Mn  Mn2  1  0.904  0.903  0.904  1.0
  Mn  Mn3  1  0.096  0.097  0.096  1.0
  Mn  Mn4  1  0.729  0.000  0.271  1.0
  Mn  Mn5  1  0.996  0.279  0.722  1.0
  Mn  Mn6  1  0.278  0.721  0.004  1.0
  Mn  Mn7  1  0.004  0.721  0.278  1.0
  Mn  Mn8  1  0.722  0.279  0.996  1.0
  Mn  Mn9  1  0.271  0.000  0.729  1.0
  Mn  Mn10  1  0.339  0.340  0.861  1.0
  Mn  Mn11  1  0.350  0.865  0.350  1.0
  Mn  Mn12  1  0.861  0.340  0.339  1.0
  Mn  Mn13  1  0.661  0.660  0.139  1.0
  Mn  Mn14  1  0.650  0.135  0.650  1.0
  Mn  Mn15  1  0.139  0.660  0.661  1.0
  Mn  Mn16  1  0.000  0.500  0.000  1.0
  Mn  Mn17  1  0.500  0.000  0.000  1.0
  Mn  Mn18  1  0.000  0.000  0.500  1.0
  C  C19  1  0.000  0.500  0.500  1.0
  C  C20  1  0.500  0.500  0.000  1.0
[/CIF]
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