The material described by Pr2Sn3 crystallizes in the triclinic P-1 space group. There are four inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one Sn(1), one Sn(4), one Sn(5), two equivalent Sn(2), two equivalent Sn(3), and two equivalent Sn(6) atoms. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one Sn(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(6), and three equivalent Sn(3) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one Sn(3), one Sn(4), one Sn(5), one Sn(6), two equivalent Sn(2), and three equivalent Sn(1) atoms. In the fourth Pr site, Pr(4) is bonded in a 8-coordinate geometry to one Sn(4), one Sn(5), one Sn(6), two equivalent Sn(1), and three equivalent Sn(2) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to one Pr(1), one Pr(2), two equivalent Pr(4), three equivalent Pr(3), one Sn(1), one Sn(2), and one Sn(6) atom. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(3), three equivalent Pr(4), one Sn(1), and one Sn(6) atom. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to one Pr(3), two equivalent Pr(1), three equivalent Pr(2), one Sn(3), and one Sn(6) atom. In the fourth Sn site, Sn(4) is bonded in a 7-coordinate geometry to one Pr(1), one Pr(3), one Pr(4), two equivalent Pr(2), and two equivalent Sn(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 7-coordinate geometry to one Pr(1), one Pr(3), one Pr(4), two equivalent Pr(2), and two equivalent Sn(4) atoms. In the sixth Sn site, Sn(6) is bonded in a 9-coordinate geometry to one Pr(3), one Pr(4), two equivalent Pr(1), two equivalent Pr(2), one Sn(1), one Sn(2), and one Sn(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2Sn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.490
_cell_length_b   8.614
_cell_length_c   11.269
_cell_angle_alpha   107.495
_cell_angle_beta   96.832
_cell_angle_gamma   100.078
_symmetry_Int_Tables_number   1
_cell_volume   581.628
_cell_formula_units_Z   4
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  0.330  0.035  0.745  1.0
  Pr  Pr1  1  0.670  0.965  0.255  1.0
  Pr  Pr2  1  0.959  0.254  0.054  1.0
  Pr  Pr3  1  0.041  0.746  0.945  1.0
  Pr  Pr4  1  0.556  0.431  0.336  1.0
  Pr  Pr5  1  0.444  0.569  0.664  1.0
  Pr  Pr6  1  0.128  0.751  0.381  1.0
  Pr  Pr7  1  0.872  0.249  0.619  1.0
  Sn  Sn8  1  0.048  0.352  0.381  1.0
  Sn  Sn9  1  0.952  0.648  0.619  1.0
  Sn  Sn10  1  0.352  0.165  0.497  1.0
  Sn  Sn11  1  0.648  0.835  0.503  1.0
  Sn  Sn12  1  0.438  0.165  0.053  1.0
  Sn  Sn13  1  0.562  0.835  0.947  1.0
  Sn  Sn14  1  0.328  0.600  0.136  1.0
  Sn  Sn15  1  0.672  0.400  0.864  1.0
  Sn  Sn16  1  0.225  0.407  0.865  1.0
  Sn  Sn17  1  0.775  0.593  0.135  1.0
  Sn  Sn18  1  0.179  0.042  0.224  1.0
  Sn  Sn19  1  0.821  0.958  0.776  1.0
[/CIF]
.
The material described by Pr2Sn3 crystallizes in the triclinic P-1 space group. There are four inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one Sn(1), one Sn(4), one Sn(5), two equivalent Sn(2), two equivalent Sn(3), and two equivalent Sn(6) atoms. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one Sn(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(6), and three equivalent Sn(3) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one Sn(3), one Sn(4), one Sn(5), one Sn(6), two equivalent Sn(2), and three equivalent Sn(1) atoms. In the fourth Pr site, Pr(4) is bonded in a 8-coordinate geometry to one Sn(4), one Sn(5), one Sn(6), two equivalent Sn(1), and three equivalent Sn(2) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to one Pr(1), one Pr(2), two equivalent Pr(4), three equivalent Pr(3), one Sn(1), one Sn(2), and one Sn(6) atom. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(3), three equivalent Pr(4), one Sn(1), and one Sn(6) atom. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to one Pr(3), two equivalent Pr(1), three equivalent Pr(2), one Sn(3), and one Sn(6) atom. In the fourth Sn site, Sn(4) is bonded in a 7-coordinate geometry to one Pr(1), one Pr(3), one Pr(4), two equivalent Pr(2), and two equivalent Sn(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 7-coordinate geometry to one Pr(1), one Pr(3), one Pr(4), two equivalent Pr(2), and two equivalent Sn(4) atoms. In the sixth Sn site, Sn(6) is bonded in a 9-coordinate geometry to one Pr(3), one Pr(4), two equivalent Pr(1), two equivalent Pr(2), one Sn(1), one Sn(2), and one Sn(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2Sn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.490
_cell_length_b   8.614
_cell_length_c   11.269
_cell_angle_alpha   107.495
_cell_angle_beta   96.832
_cell_angle_gamma   100.078
_symmetry_Int_Tables_number   1
_cell_volume   581.628
_cell_formula_units_Z   4
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  0.330  0.035  0.745  1.0
  Pr  Pr1  1  0.670  0.965  0.255  1.0
  Pr  Pr2  1  0.959  0.254  0.054  1.0
  Pr  Pr3  1  0.041  0.746  0.945  1.0
  Pr  Pr4  1  0.556  0.431  0.336  1.0
  Pr  Pr5  1  0.444  0.569  0.664  1.0
  Pr  Pr6  1  0.128  0.751  0.381  1.0
  Pr  Pr7  1  0.872  0.249  0.619  1.0
  Sn  Sn8  1  0.048  0.352  0.381  1.0
  Sn  Sn9  1  0.952  0.648  0.619  1.0
  Sn  Sn10  1  0.352  0.165  0.497  1.0
  Sn  Sn11  1  0.648  0.835  0.503  1.0
  Sn  Sn12  1  0.438  0.165  0.053  1.0
  Sn  Sn13  1  0.562  0.835  0.947  1.0
  Sn  Sn14  1  0.328  0.600  0.136  1.0
  Sn  Sn15  1  0.672  0.400  0.864  1.0
  Sn  Sn16  1  0.225  0.407  0.865  1.0
  Sn  Sn17  1  0.775  0.593  0.135  1.0
  Sn  Sn18  1  0.179  0.042  0.224  1.0
  Sn  Sn19  1  0.821  0.958  0.776  1.0
[/CIF]
.