The compound described by Pr2FeSn4 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 11-coordinate geometry to one Fe(1), two equivalent Sn(1), two equivalent Sn(2), two equivalent Sn(3), and four equivalent Sn(4) atoms. In the second Pr site, Pr(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(2), two equivalent Sn(4), and four equivalent Sn(3) atoms. Fe(1) is bonded in a 5-coordinate geometry to one Pr(1), one Sn(3), two equivalent Sn(1), and two equivalent Sn(2) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), and two equivalent Fe(1) atoms. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), and two equivalent Fe(1) atoms. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Fe(1), and two equivalent Sn(4) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Pr(2), four equivalent Pr(1), and two equivalent Sn(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2FeSn4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.701
_cell_length_b   8.701
_cell_length_c   4.621
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   148.977
_symmetry_Int_Tables_number   1
_cell_volume   180.322
_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  0.101  0.899  0.500  1.0
  Pr  Pr1  1  0.898  0.102  0.000  1.0
  Fe  Fe2  1  0.300  0.700  0.500  1.0
  Sn  Sn3  1  0.742  0.258  0.500  1.0
  Sn  Sn4  1  0.244  0.756  0.000  1.0
  Sn  Sn5  1  0.449  0.551  0.500  1.0
  Sn  Sn6  1  0.569  0.431  0.000  1.0
[/CIF]
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The compound described by Pr2FeSn4 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 11-coordinate geometry to one Fe(1), two equivalent Sn(1), two equivalent Sn(2), two equivalent Sn(3), and four equivalent Sn(4) atoms. In the second Pr site, Pr(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(2), two equivalent Sn(4), and four equivalent Sn(3) atoms. Fe(1) is bonded in a 5-coordinate geometry to one Pr(1), one Sn(3), two equivalent Sn(1), and two equivalent Sn(2) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), and two equivalent Fe(1) atoms. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), and two equivalent Fe(1) atoms. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Fe(1), and two equivalent Sn(4) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Pr(2), four equivalent Pr(1), and two equivalent Sn(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2FeSn4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.701
_cell_length_b   8.701
_cell_length_c   4.621
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   148.977
_symmetry_Int_Tables_number   1
_cell_volume   180.322
_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  0.101  0.899  0.500  1.0
  Pr  Pr1  1  0.898  0.102  0.000  1.0
  Fe  Fe2  1  0.300  0.700  0.500  1.0
  Sn  Sn3  1  0.742  0.258  0.500  1.0
  Sn  Sn4  1  0.244  0.756  0.000  1.0
  Sn  Sn5  1  0.449  0.551  0.500  1.0
  Sn  Sn6  1  0.569  0.431  0.000  1.0
[/CIF]
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