The structure described by Sm3(CuGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form distorted edge-sharing SmGe6 octahedra. In the second Sm site, Sm(2) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Sm(2), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sm(1), two equivalent Sm(2), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), two equivalent Cu(1), and one Ge(2) atom. is represented by the CIF card [CIF]
data_Sm3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.149
_cell_length_b   8.149
_cell_length_c   8.149
_cell_angle_alpha   149.422
_cell_angle_beta   131.442
_cell_angle_gamma   58.480
_symmetry_Int_Tables_number   1
_cell_volume   204.786
_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
  Sm  Sm0  1  0.500  0.000  0.500  1.0
  Sm  Sm1  1  0.869  0.869  0.000  1.0
  Sm  Sm2  1  0.131  0.131  0.000  1.0
  Cu  Cu3  1  0.480  0.668  0.811  1.0
  Cu  Cu4  1  0.857  0.668  0.189  1.0
  Cu  Cu5  1  0.143  0.332  0.811  1.0
  Cu  Cu6  1  0.520  0.332  0.189  1.0
  Ge  Ge7  1  0.285  0.785  0.500  1.0
  Ge  Ge8  1  0.715  0.215  0.500  1.0
  Ge  Ge9  1  0.810  0.500  0.310  1.0
  Ge  Ge10  1  0.190  0.500  0.690  1.0
[/CIF]
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The structure described by Sm3(CuGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form distorted edge-sharing SmGe6 octahedra. In the second Sm site, Sm(2) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Sm(2), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sm(1), two equivalent Sm(2), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), two equivalent Cu(1), and one Ge(2) atom. is represented by the CIF card [CIF]
data_Sm3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.149
_cell_length_b   8.149
_cell_length_c   8.149
_cell_angle_alpha   149.422
_cell_angle_beta   131.442
_cell_angle_gamma   58.480
_symmetry_Int_Tables_number   1
_cell_volume   204.786
_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
  Sm  Sm0  1  0.500  0.000  0.500  1.0
  Sm  Sm1  1  0.869  0.869  0.000  1.0
  Sm  Sm2  1  0.131  0.131  0.000  1.0
  Cu  Cu3  1  0.480  0.668  0.811  1.0
  Cu  Cu4  1  0.857  0.668  0.189  1.0
  Cu  Cu5  1  0.143  0.332  0.811  1.0
  Cu  Cu6  1  0.520  0.332  0.189  1.0
  Ge  Ge7  1  0.285  0.785  0.500  1.0
  Ge  Ge8  1  0.715  0.215  0.500  1.0
  Ge  Ge9  1  0.810  0.500  0.310  1.0
  Ge  Ge10  1  0.190  0.500  0.690  1.0
[/CIF]
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