The compound described by Sm3Pt4 crystallizes in the trigonal R-3 space group. Sm(1) is bonded in a 9-coordinate geometry to one Pt(1), one Pt(2), and seven equivalent Pt(3) atoms. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to six equivalent Sm(1) atoms. In the second Pt site, Pt(2) is bonded in a distorted octahedral geometry to six equivalent Sm(1) atoms. In the third Pt site, Pt(3) is bonded in a 10-coordinate geometry to seven equivalent Sm(1) and three equivalent Pt(3) atoms. is represented by the CIF file [CIF]
data_Sm3Pt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.759
_cell_length_b   8.019
_cell_length_c   8.019
_cell_angle_alpha   114.458
_cell_angle_beta   103.851
_cell_angle_gamma   103.851
_symmetry_Int_Tables_number   1
_cell_volume   302.345
_cell_formula_units_Z   2
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
  Sm  Sm0  1  0.405  0.123  0.375  1.0
  Sm  Sm1  1  0.030  0.625  0.747  1.0
  Sm  Sm2  1  0.282  0.253  0.877  1.0
  Sm  Sm3  1  0.595  0.877  0.625  1.0
  Sm  Sm4  1  0.970  0.375  0.253  1.0
  Sm  Sm5  1  0.718  0.747  0.123  1.0
  Pt  Pt6  1  0.000  0.000  0.000  1.0
  Pt  Pt7  1  0.500  0.000  0.000  1.0
  Pt  Pt8  1  0.223  0.667  0.164  1.0
  Pt  Pt9  1  0.059  0.836  0.503  1.0
  Pt  Pt10  1  0.556  0.497  0.333  1.0
  Pt  Pt11  1  0.777  0.333  0.836  1.0
  Pt  Pt12  1  0.941  0.164  0.497  1.0
  Pt  Pt13  1  0.444  0.503  0.667  1.0
[/CIF]
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The compound described by Sm3Pt4 crystallizes in the trigonal R-3 space group. Sm(1) is bonded in a 9-coordinate geometry to one Pt(1), one Pt(2), and seven equivalent Pt(3) atoms. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to six equivalent Sm(1) atoms. In the second Pt site, Pt(2) is bonded in a distorted octahedral geometry to six equivalent Sm(1) atoms. In the third Pt site, Pt(3) is bonded in a 10-coordinate geometry to seven equivalent Sm(1) and three equivalent Pt(3) atoms. is represented by the CIF file [CIF]
data_Sm3Pt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.759
_cell_length_b   8.019
_cell_length_c   8.019
_cell_angle_alpha   114.458
_cell_angle_beta   103.851
_cell_angle_gamma   103.851
_symmetry_Int_Tables_number   1
_cell_volume   302.345
_cell_formula_units_Z   2
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
  Sm  Sm0  1  0.405  0.123  0.375  1.0
  Sm  Sm1  1  0.030  0.625  0.747  1.0
  Sm  Sm2  1  0.282  0.253  0.877  1.0
  Sm  Sm3  1  0.595  0.877  0.625  1.0
  Sm  Sm4  1  0.970  0.375  0.253  1.0
  Sm  Sm5  1  0.718  0.747  0.123  1.0
  Pt  Pt6  1  0.000  0.000  0.000  1.0
  Pt  Pt7  1  0.500  0.000  0.000  1.0
  Pt  Pt8  1  0.223  0.667  0.164  1.0
  Pt  Pt9  1  0.059  0.836  0.503  1.0
  Pt  Pt10  1  0.556  0.497  0.333  1.0
  Pt  Pt11  1  0.777  0.333  0.836  1.0
  Pt  Pt12  1  0.941  0.164  0.497  1.0
  Pt  Pt13  1  0.444  0.503  0.667  1.0
[/CIF]
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