The crystal structure described by Pr2Mn17C2 crystallizes in the monoclinic C2/m space group. Pr(1) is bonded in a distorted bent 120 degrees geometry to one Mn(7), two equivalent Mn(1), two equivalent Mn(4), three equivalent Mn(6), and two equivalent C(1) atoms. There are seven inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent Pr(1), two equivalent Mn(2), two equivalent Mn(4), two equivalent Mn(5), two equivalent Mn(6), and two equivalent Mn(7) atoms to form distorted MnPr2Mn10 cuboctahedra that share corners with two equivalent Mn(1)Pr2Mn10 cuboctahedra, corners with two equivalent Mn(4)Pr2Mn10 cuboctahedra, corners with four equivalent C(1)Pr2Mn4 octahedra,  an edgeedge with one Mn(1)Pr2Mn10 cuboctahedra, edges with two equivalent Mn(4)Pr2Mn10 cuboctahedra, edges with two equivalent C(1)Pr2Mn4 octahedra,  a faceface with one Mn(1)Pr2Mn10 cuboctahedra, and faces with two equivalent Mn(4)Pr2Mn10 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-27°. In the second Mn site, Mn(2) is bonded in a single-bond geometry to one Mn(1), one Mn(3), one Mn(4), one Mn(6), two equivalent Mn(7), and one C(1) atom. In the third Mn site, Mn(3) is bonded in a 10-coordinate geometry to two equivalent Mn(7), four equivalent Mn(2), and four equivalent Mn(5) atoms. In the fourth Mn site, Mn(4) is bonded to two equivalent Pr(1), two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(5), two equivalent Mn(6), and two equivalent Mn(7) atoms to form distorted MnPr2Mn10 cuboctahedra that share corners with two equivalent Mn(1)Pr2Mn10 cuboctahedra, corners with two equivalent Mn(4)Pr2Mn10 cuboctahedra, corners with two equivalent C(1)Pr2Mn4 octahedra, edges with two equivalent Mn(1)Pr2Mn10 cuboctahedra, faces with two equivalent Mn(1)Pr2Mn10 cuboctahedra, faces with two equivalent Mn(4)Pr2Mn10 cuboctahedra, and faces with two equivalent C(1)Pr2Mn4 octahedra. The corner-sharing octahedral tilt angles are 49°. In the fifth Mn site, Mn(5) is bonded in a single-bond geometry to one Mn(1), one Mn(3), one Mn(4), one Mn(6), one Mn(7), and one C(1) atom. In the sixth Mn site, Mn(6) is bonded in a 12-coordinate geometry to three equivalent Pr(1), one Mn(7), two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(4), and two equivalent Mn(5) atoms. In the seventh Mn site, Mn(7) is bonded in a 14-coordinate geometry to one Pr(1), one Mn(3), one Mn(6), one Mn(7), two equivalent Mn(1), two equivalent Mn(4), two equivalent Mn(5), and four equivalent Mn(2) atoms. C(1) is bonded to two equivalent Pr(1), two equivalent Mn(2), and two equivalent Mn(5) atoms to form CPr2Mn4 octahedra that share corners with two equivalent Mn(4)Pr2Mn10 cuboctahedra, corners with four equivalent Mn(1)Pr2Mn10 cuboctahedra, corners with two equivalent C(1)Pr2Mn4 octahedra, edges with two equivalent Mn(1)Pr2Mn10 cuboctahedra, and faces with two equivalent Mn(4)Pr2Mn10 cuboctahedra. The corner-sharing octahedral tilt angles are 64°. is represented by the CIF file [CIF]
data_Pr2Mn17C2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.505
_cell_length_b   6.482
_cell_length_c   6.505
_cell_angle_alpha   83.627
_cell_angle_beta   84.315
_cell_angle_gamma   83.627
_symmetry_Int_Tables_number   1
_cell_volume   269.834
_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
  Pr  Pr0  1  0.641  0.659  0.641  1.0
  Pr  Pr1  1  0.359  0.341  0.359  1.0
  Mn  Mn2  1  0.734  0.000  0.266  1.0
  Mn  Mn3  1  0.992  0.281  0.718  1.0
  Mn  Mn4  1  0.282  0.719  0.008  1.0
  Mn  Mn5  1  0.008  0.719  0.282  1.0
  Mn  Mn6  1  0.718  0.281  0.992  1.0
  Mn  Mn7  1  0.266  0.000  0.734  1.0
  Mn  Mn8  1  0.000  0.500  0.000  1.0
  Mn  Mn9  1  0.500  0.000  0.000  1.0
  Mn  Mn10  1  0.000  0.000  0.500  1.0
  Mn  Mn11  1  0.335  0.336  0.869  1.0
  Mn  Mn12  1  0.343  0.872  0.343  1.0
  Mn  Mn13  1  0.869  0.336  0.335  1.0
  Mn  Mn14  1  0.665  0.664  0.131  1.0
  Mn  Mn15  1  0.657  0.128  0.657  1.0
  Mn  Mn16  1  0.131  0.664  0.665  1.0
  Mn  Mn17  1  0.906  0.906  0.906  1.0
  Mn  Mn18  1  0.094  0.094  0.094  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 crystal structure described by Pr2Mn17C2 crystallizes in the monoclinic C2/m space group. Pr(1) is bonded in a distorted bent 120 degrees geometry to one Mn(7), two equivalent Mn(1), two equivalent Mn(4), three equivalent Mn(6), and two equivalent C(1) atoms. There are seven inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent Pr(1), two equivalent Mn(2), two equivalent Mn(4), two equivalent Mn(5), two equivalent Mn(6), and two equivalent Mn(7) atoms to form distorted MnPr2Mn10 cuboctahedra that share corners with two equivalent Mn(1)Pr2Mn10 cuboctahedra, corners with two equivalent Mn(4)Pr2Mn10 cuboctahedra, corners with four equivalent C(1)Pr2Mn4 octahedra,  an edgeedge with one Mn(1)Pr2Mn10 cuboctahedra, edges with two equivalent Mn(4)Pr2Mn10 cuboctahedra, edges with two equivalent C(1)Pr2Mn4 octahedra,  a faceface with one Mn(1)Pr2Mn10 cuboctahedra, and faces with two equivalent Mn(4)Pr2Mn10 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-27°. In the second Mn site, Mn(2) is bonded in a single-bond geometry to one Mn(1), one Mn(3), one Mn(4), one Mn(6), two equivalent Mn(7), and one C(1) atom. In the third Mn site, Mn(3) is bonded in a 10-coordinate geometry to two equivalent Mn(7), four equivalent Mn(2), and four equivalent Mn(5) atoms. In the fourth Mn site, Mn(4) is bonded to two equivalent Pr(1), two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(5), two equivalent Mn(6), and two equivalent Mn(7) atoms to form distorted MnPr2Mn10 cuboctahedra that share corners with two equivalent Mn(1)Pr2Mn10 cuboctahedra, corners with two equivalent Mn(4)Pr2Mn10 cuboctahedra, corners with two equivalent C(1)Pr2Mn4 octahedra, edges with two equivalent Mn(1)Pr2Mn10 cuboctahedra, faces with two equivalent Mn(1)Pr2Mn10 cuboctahedra, faces with two equivalent Mn(4)Pr2Mn10 cuboctahedra, and faces with two equivalent C(1)Pr2Mn4 octahedra. The corner-sharing octahedral tilt angles are 49°. In the fifth Mn site, Mn(5) is bonded in a single-bond geometry to one Mn(1), one Mn(3), one Mn(4), one Mn(6), one Mn(7), and one C(1) atom. In the sixth Mn site, Mn(6) is bonded in a 12-coordinate geometry to three equivalent Pr(1), one Mn(7), two equivalent Mn(1), two equivalent Mn(2), two equivalent Mn(4), and two equivalent Mn(5) atoms. In the seventh Mn site, Mn(7) is bonded in a 14-coordinate geometry to one Pr(1), one Mn(3), one Mn(6), one Mn(7), two equivalent Mn(1), two equivalent Mn(4), two equivalent Mn(5), and four equivalent Mn(2) atoms. C(1) is bonded to two equivalent Pr(1), two equivalent Mn(2), and two equivalent Mn(5) atoms to form CPr2Mn4 octahedra that share corners with two equivalent Mn(4)Pr2Mn10 cuboctahedra, corners with four equivalent Mn(1)Pr2Mn10 cuboctahedra, corners with two equivalent C(1)Pr2Mn4 octahedra, edges with two equivalent Mn(1)Pr2Mn10 cuboctahedra, and faces with two equivalent Mn(4)Pr2Mn10 cuboctahedra. The corner-sharing octahedral tilt angles are 64°. is represented by the CIF file [CIF]
data_Pr2Mn17C2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.505
_cell_length_b   6.482
_cell_length_c   6.505
_cell_angle_alpha   83.627
_cell_angle_beta   84.315
_cell_angle_gamma   83.627
_symmetry_Int_Tables_number   1
_cell_volume   269.834
_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
  Pr  Pr0  1  0.641  0.659  0.641  1.0
  Pr  Pr1  1  0.359  0.341  0.359  1.0
  Mn  Mn2  1  0.734  0.000  0.266  1.0
  Mn  Mn3  1  0.992  0.281  0.718  1.0
  Mn  Mn4  1  0.282  0.719  0.008  1.0
  Mn  Mn5  1  0.008  0.719  0.282  1.0
  Mn  Mn6  1  0.718  0.281  0.992  1.0
  Mn  Mn7  1  0.266  0.000  0.734  1.0
  Mn  Mn8  1  0.000  0.500  0.000  1.0
  Mn  Mn9  1  0.500  0.000  0.000  1.0
  Mn  Mn10  1  0.000  0.000  0.500  1.0
  Mn  Mn11  1  0.335  0.336  0.869  1.0
  Mn  Mn12  1  0.343  0.872  0.343  1.0
  Mn  Mn13  1  0.869  0.336  0.335  1.0
  Mn  Mn14  1  0.665  0.664  0.131  1.0
  Mn  Mn15  1  0.657  0.128  0.657  1.0
  Mn  Mn16  1  0.131  0.664  0.665  1.0
  Mn  Mn17  1  0.906  0.906  0.906  1.0
  Mn  Mn18  1  0.094  0.094  0.094  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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