The material structure described by Pr10C4Br15 crystallizes in the triclinic P-1 space group. There are five inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to one C(1), one C(2), one Br(1), one Br(3), one Br(4), one Br(5), and one Br(7) atom to form distorted PrC2Br5 pentagonal bipyramids that share  a cornercorner with one Pr(4)CBr5 octahedra,  a cornercorner with one Pr(1)C2Br5 pentagonal bipyramid, corners with two equivalent Pr(5)C2Br5 pentagonal bipyramids, edges with two equivalent Pr(2)C4Br4 hexagonal bipyramids,  an edgeedge with one Pr(4)CBr5 octahedra, edges with two equivalent Pr(3)CBr5 octahedra,  a faceface with one Pr(2)C4Br4 hexagonal bipyramid, and  a faceface with one Pr(5)C2Br5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 9°. In the second Pr site, Pr(2) is bonded to two equivalent C(1), two equivalent C(2), one Br(1), one Br(4), one Br(6), and one Br(8) atom to form distorted PrC4Br4 hexagonal bipyramids that share  a cornercorner with one Pr(2)C4Br4 hexagonal bipyramid, edges with two equivalent Pr(3)CBr5 octahedra, edges with two equivalent Pr(4)CBr5 octahedra,  an edgeedge with one Pr(5)C2Br5 pentagonal bipyramid, edges with two equivalent Pr(1)C2Br5 pentagonal bipyramids,  a faceface with one Pr(2)C4Br4 hexagonal bipyramid,  a faceface with one Pr(1)C2Br5 pentagonal bipyramid, and  a faceface with one Pr(5)C2Br5 pentagonal bipyramid. In the third Pr site, Pr(3) is bonded to one C(2), one Br(3), one Br(6), one Br(8), and two equivalent Br(7) atoms to form PrCBr5 octahedra that share edges with two equivalent Pr(2)C4Br4 hexagonal bipyramids,  an edgeedge with one Pr(3)CBr5 octahedra,  an edgeedge with one Pr(4)CBr5 octahedra, edges with two equivalent Pr(1)C2Br5 pentagonal bipyramids, and edges with two equivalent Pr(5)C2Br5 pentagonal bipyramids. In the fourth Pr site, Pr(4) is bonded to one C(1), one Br(2), one Br(6), one Br(8), and two equivalent Br(5) atoms to form PrCBr5 octahedra that share  a cornercorner with one Pr(1)C2Br5 pentagonal bipyramid,  a cornercorner with one Pr(5)C2Br5 pentagonal bipyramid, edges with two equivalent Pr(2)C4Br4 hexagonal bipyramids,  an edgeedge with one Pr(3)CBr5 octahedra,  an edgeedge with one Pr(4)CBr5 octahedra,  an edgeedge with one Pr(1)C2Br5 pentagonal bipyramid, and  an edgeedge with one Pr(5)C2Br5 pentagonal bipyramid. In the fifth Pr site, Pr(5) is bonded to one C(1), one C(2), one Br(3), one Br(4), one Br(7), and two equivalent Br(2) atoms to form distorted PrC2Br5 pentagonal bipyramids that share  a cornercorner with one Pr(4)CBr5 octahedra, corners with two equivalent Pr(1)C2Br5 pentagonal bipyramids,  an edgeedge with one Pr(2)C4Br4 hexagonal bipyramid,  an edgeedge with one Pr(4)CBr5 octahedra, edges with two equivalent Pr(3)CBr5 octahedra,  an edgeedge with one Pr(5)C2Br5 pentagonal bipyramid,  a faceface with one Pr(2)C4Br4 hexagonal bipyramid, and  a faceface with one Pr(1)C2Br5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 3°. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Pr(1), one Pr(4), one Pr(5), two equivalent Pr(2), and one C(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Pr(1), one Pr(3), one Pr(5), two equivalent Pr(2), and one C(1) atom. There are eight inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted square co-planar geometry to two equivalent Pr(1) and two equivalent Pr(2) atoms. In the second Br site, Br(2) is bonded in a T-shaped geometry to one Pr(4) and two equivalent Pr(5) atoms. In the third Br site, Br(3) is bonded in a distorted T-shaped geometry to one Pr(1), one Pr(3), and one Pr(5) atom. In the fourth Br site, Br(4) is bonded in a distorted T-shaped geometry to one Pr(1), one Pr(2), and one Pr(5) atom. In the fifth Br site, Br(5) is bonded in a T-shaped geometry to one Pr(1) and two equivalent Pr(4) atoms. In the sixth Br site, Br(6) is bonded in a distorted T-shaped geometry to one Pr(2), one Pr(3), and one Pr(4) atom. In the seventh Br site, Br(7) is bonded in a rectangular see-saw-like geometry to one Pr(1), one Pr(5), and two equivalent Pr(3) atoms. In the eighth Br site, Br(8) is bonded in a distorted T-shaped geometry to one Pr(2), one Pr(3), and one Pr(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr10C4Br15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.219
_cell_length_b   10.215
_cell_length_c   11.138
_cell_angle_alpha   70.314
_cell_angle_beta   66.265
_cell_angle_gamma   70.804
_symmetry_Int_Tables_number   1
_cell_volume   881.024
_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  0.335  0.752  0.831  1.0
  Pr  Pr1  1  0.665  0.248  0.169  1.0
  Pr  Pr2  1  0.171  0.430  0.046  1.0
  Pr  Pr3  1  0.829  0.570  0.954  1.0
  Pr  Pr4  1  0.079  0.179  0.887  1.0
  Pr  Pr5  1  0.921  0.821  0.113  1.0
  Pr  Pr6  1  0.247  0.540  0.644  1.0
  Pr  Pr7  1  0.753  0.460  0.356  1.0
  Pr  Pr8  1  0.028  0.103  0.265  1.0
  Pr  Pr9  1  0.972  0.897  0.735  1.0
  C  C10  1  0.880  0.359  0.172  1.0
  C  C11  1  0.120  0.641  0.828  1.0
  C  C12  1  0.956  0.295  0.062  1.0
  C  C13  1  0.044  0.705  0.938  1.0
  Br  Br14  1  0.500  0.500  0.000  1.0
  Br  Br15  1  0.133  0.814  0.467  1.0
  Br  Br16  1  0.867  0.186  0.533  1.0
  Br  Br17  1  0.258  0.028  0.643  1.0
  Br  Br18  1  0.742  0.972  0.357  1.0
  Br  Br19  1  0.337  0.166  0.221  1.0
  Br  Br20  1  0.663  0.834  0.779  1.0
  Br  Br21  1  0.452  0.368  0.414  1.0
  Br  Br22  1  0.548  0.632  0.586  1.0
  Br  Br23  1  0.947  0.443  0.702  1.0
  Br  Br24  1  0.053  0.557  0.298  1.0
  Br  Br25  1  0.235  0.907  0.062  1.0
  Br  Br26  1  0.765  0.093  0.938  1.0
  Br  Br27  1  0.388  0.271  0.817  1.0
  Br  Br28  1  0.612  0.729  0.183  1.0
[/CIF]
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The material structure described by Pr10C4Br15 crystallizes in the triclinic P-1 space group. There are five inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to one C(1), one C(2), one Br(1), one Br(3), one Br(4), one Br(5), and one Br(7) atom to form distorted PrC2Br5 pentagonal bipyramids that share  a cornercorner with one Pr(4)CBr5 octahedra,  a cornercorner with one Pr(1)C2Br5 pentagonal bipyramid, corners with two equivalent Pr(5)C2Br5 pentagonal bipyramids, edges with two equivalent Pr(2)C4Br4 hexagonal bipyramids,  an edgeedge with one Pr(4)CBr5 octahedra, edges with two equivalent Pr(3)CBr5 octahedra,  a faceface with one Pr(2)C4Br4 hexagonal bipyramid, and  a faceface with one Pr(5)C2Br5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 9°. In the second Pr site, Pr(2) is bonded to two equivalent C(1), two equivalent C(2), one Br(1), one Br(4), one Br(6), and one Br(8) atom to form distorted PrC4Br4 hexagonal bipyramids that share  a cornercorner with one Pr(2)C4Br4 hexagonal bipyramid, edges with two equivalent Pr(3)CBr5 octahedra, edges with two equivalent Pr(4)CBr5 octahedra,  an edgeedge with one Pr(5)C2Br5 pentagonal bipyramid, edges with two equivalent Pr(1)C2Br5 pentagonal bipyramids,  a faceface with one Pr(2)C4Br4 hexagonal bipyramid,  a faceface with one Pr(1)C2Br5 pentagonal bipyramid, and  a faceface with one Pr(5)C2Br5 pentagonal bipyramid. In the third Pr site, Pr(3) is bonded to one C(2), one Br(3), one Br(6), one Br(8), and two equivalent Br(7) atoms to form PrCBr5 octahedra that share edges with two equivalent Pr(2)C4Br4 hexagonal bipyramids,  an edgeedge with one Pr(3)CBr5 octahedra,  an edgeedge with one Pr(4)CBr5 octahedra, edges with two equivalent Pr(1)C2Br5 pentagonal bipyramids, and edges with two equivalent Pr(5)C2Br5 pentagonal bipyramids. In the fourth Pr site, Pr(4) is bonded to one C(1), one Br(2), one Br(6), one Br(8), and two equivalent Br(5) atoms to form PrCBr5 octahedra that share  a cornercorner with one Pr(1)C2Br5 pentagonal bipyramid,  a cornercorner with one Pr(5)C2Br5 pentagonal bipyramid, edges with two equivalent Pr(2)C4Br4 hexagonal bipyramids,  an edgeedge with one Pr(3)CBr5 octahedra,  an edgeedge with one Pr(4)CBr5 octahedra,  an edgeedge with one Pr(1)C2Br5 pentagonal bipyramid, and  an edgeedge with one Pr(5)C2Br5 pentagonal bipyramid. In the fifth Pr site, Pr(5) is bonded to one C(1), one C(2), one Br(3), one Br(4), one Br(7), and two equivalent Br(2) atoms to form distorted PrC2Br5 pentagonal bipyramids that share  a cornercorner with one Pr(4)CBr5 octahedra, corners with two equivalent Pr(1)C2Br5 pentagonal bipyramids,  an edgeedge with one Pr(2)C4Br4 hexagonal bipyramid,  an edgeedge with one Pr(4)CBr5 octahedra, edges with two equivalent Pr(3)CBr5 octahedra,  an edgeedge with one Pr(5)C2Br5 pentagonal bipyramid,  a faceface with one Pr(2)C4Br4 hexagonal bipyramid, and  a faceface with one Pr(1)C2Br5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 3°. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Pr(1), one Pr(4), one Pr(5), two equivalent Pr(2), and one C(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Pr(1), one Pr(3), one Pr(5), two equivalent Pr(2), and one C(1) atom. There are eight inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted square co-planar geometry to two equivalent Pr(1) and two equivalent Pr(2) atoms. In the second Br site, Br(2) is bonded in a T-shaped geometry to one Pr(4) and two equivalent Pr(5) atoms. In the third Br site, Br(3) is bonded in a distorted T-shaped geometry to one Pr(1), one Pr(3), and one Pr(5) atom. In the fourth Br site, Br(4) is bonded in a distorted T-shaped geometry to one Pr(1), one Pr(2), and one Pr(5) atom. In the fifth Br site, Br(5) is bonded in a T-shaped geometry to one Pr(1) and two equivalent Pr(4) atoms. In the sixth Br site, Br(6) is bonded in a distorted T-shaped geometry to one Pr(2), one Pr(3), and one Pr(4) atom. In the seventh Br site, Br(7) is bonded in a rectangular see-saw-like geometry to one Pr(1), one Pr(5), and two equivalent Pr(3) atoms. In the eighth Br site, Br(8) is bonded in a distorted T-shaped geometry to one Pr(2), one Pr(3), and one Pr(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr10C4Br15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.219
_cell_length_b   10.215
_cell_length_c   11.138
_cell_angle_alpha   70.314
_cell_angle_beta   66.265
_cell_angle_gamma   70.804
_symmetry_Int_Tables_number   1
_cell_volume   881.024
_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  0.335  0.752  0.831  1.0
  Pr  Pr1  1  0.665  0.248  0.169  1.0
  Pr  Pr2  1  0.171  0.430  0.046  1.0
  Pr  Pr3  1  0.829  0.570  0.954  1.0
  Pr  Pr4  1  0.079  0.179  0.887  1.0
  Pr  Pr5  1  0.921  0.821  0.113  1.0
  Pr  Pr6  1  0.247  0.540  0.644  1.0
  Pr  Pr7  1  0.753  0.460  0.356  1.0
  Pr  Pr8  1  0.028  0.103  0.265  1.0
  Pr  Pr9  1  0.972  0.897  0.735  1.0
  C  C10  1  0.880  0.359  0.172  1.0
  C  C11  1  0.120  0.641  0.828  1.0
  C  C12  1  0.956  0.295  0.062  1.0
  C  C13  1  0.044  0.705  0.938  1.0
  Br  Br14  1  0.500  0.500  0.000  1.0
  Br  Br15  1  0.133  0.814  0.467  1.0
  Br  Br16  1  0.867  0.186  0.533  1.0
  Br  Br17  1  0.258  0.028  0.643  1.0
  Br  Br18  1  0.742  0.972  0.357  1.0
  Br  Br19  1  0.337  0.166  0.221  1.0
  Br  Br20  1  0.663  0.834  0.779  1.0
  Br  Br21  1  0.452  0.368  0.414  1.0
  Br  Br22  1  0.548  0.632  0.586  1.0
  Br  Br23  1  0.947  0.443  0.702  1.0
  Br  Br24  1  0.053  0.557  0.298  1.0
  Br  Br25  1  0.235  0.907  0.062  1.0
  Br  Br26  1  0.765  0.093  0.938  1.0
  Br  Br27  1  0.388  0.271  0.817  1.0
  Br  Br28  1  0.612  0.729  0.183  1.0
[/CIF]
.