The crystal structure described by Nb10(SnGe)3 crystallizes in the orthorhombic Fmm2 space group. There are five inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to one Sn(1), three equivalent Sn(2), and two equivalent Ge(1) atoms. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to three equivalent Sn(2), one Ge(2), and two equivalent Ge(1) atoms. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one Sn(1), one Sn(2), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the fourth Nb site, Nb(4) is bonded in a 6-coordinate geometry to one Sn(2), two equivalent Sn(1), one Ge(2), and two equivalent Ge(1) atoms. In the fifth Nb site, Nb(5) is bonded in a 6-coordinate geometry to two equivalent Nb(5), one Sn(1), two equivalent Sn(2), and one Ge(2) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to two equivalent Nb(1), two equivalent Nb(3), two equivalent Nb(5), and four equivalent Nb(4) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Nb(3), one Nb(4), two equivalent Nb(5), three equivalent Nb(1), and three equivalent Nb(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Nb(1), two equivalent Nb(2), two equivalent Nb(3), two equivalent Nb(4), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to two equivalent Nb(2), two equivalent Nb(4), two equivalent Nb(5), and four equivalent Nb(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nb10(SnGe)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.563
_cell_length_b   7.950
_cell_length_c   7.882
_cell_angle_alpha   83.703
_cell_angle_beta   48.421
_cell_angle_gamma   47.876
_symmetry_Int_Tables_number   1
_cell_volume   292.509
_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
  Nb  Nb0  1  0.069  0.282  0.718  1.0
  Nb  Nb1  1  0.936  0.723  0.277  1.0
  Nb  Nb2  1  0.574  0.221  0.779  1.0
  Nb  Nb3  1  0.420  0.784  0.216  1.0
  Nb  Nb4  1  0.779  0.426  0.574  1.0
  Nb  Nb5  1  0.216  0.580  0.420  1.0
  Nb  Nb6  1  0.718  0.931  0.069  1.0
  Nb  Nb7  1  0.277  0.064  0.936  1.0
  Nb  Nb8  1  0.757  0.243  0.255  1.0
  Nb  Nb9  1  0.255  0.745  0.757  1.0
  Sn  Sn10  1  0.834  0.166  0.834  1.0
  Sn  Sn11  1  0.668  0.671  0.329  1.0
  Sn  Sn12  1  0.329  0.332  0.668  1.0
  Ge  Ge13  1  0.749  0.751  0.749  1.0
  Ge  Ge14  1  0.249  0.251  0.249  1.0
  Ge  Ge15  1  0.168  0.832  0.168  1.0
[/CIF]
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The crystal structure described by Nb10(SnGe)3 crystallizes in the orthorhombic Fmm2 space group. There are five inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to one Sn(1), three equivalent Sn(2), and two equivalent Ge(1) atoms. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to three equivalent Sn(2), one Ge(2), and two equivalent Ge(1) atoms. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one Sn(1), one Sn(2), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the fourth Nb site, Nb(4) is bonded in a 6-coordinate geometry to one Sn(2), two equivalent Sn(1), one Ge(2), and two equivalent Ge(1) atoms. In the fifth Nb site, Nb(5) is bonded in a 6-coordinate geometry to two equivalent Nb(5), one Sn(1), two equivalent Sn(2), and one Ge(2) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to two equivalent Nb(1), two equivalent Nb(3), two equivalent Nb(5), and four equivalent Nb(4) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Nb(3), one Nb(4), two equivalent Nb(5), three equivalent Nb(1), and three equivalent Nb(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Nb(1), two equivalent Nb(2), two equivalent Nb(3), two equivalent Nb(4), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to two equivalent Nb(2), two equivalent Nb(4), two equivalent Nb(5), and four equivalent Nb(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nb10(SnGe)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.563
_cell_length_b   7.950
_cell_length_c   7.882
_cell_angle_alpha   83.703
_cell_angle_beta   48.421
_cell_angle_gamma   47.876
_symmetry_Int_Tables_number   1
_cell_volume   292.509
_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
  Nb  Nb0  1  0.069  0.282  0.718  1.0
  Nb  Nb1  1  0.936  0.723  0.277  1.0
  Nb  Nb2  1  0.574  0.221  0.779  1.0
  Nb  Nb3  1  0.420  0.784  0.216  1.0
  Nb  Nb4  1  0.779  0.426  0.574  1.0
  Nb  Nb5  1  0.216  0.580  0.420  1.0
  Nb  Nb6  1  0.718  0.931  0.069  1.0
  Nb  Nb7  1  0.277  0.064  0.936  1.0
  Nb  Nb8  1  0.757  0.243  0.255  1.0
  Nb  Nb9  1  0.255  0.745  0.757  1.0
  Sn  Sn10  1  0.834  0.166  0.834  1.0
  Sn  Sn11  1  0.668  0.671  0.329  1.0
  Sn  Sn12  1  0.329  0.332  0.668  1.0
  Ge  Ge13  1  0.749  0.751  0.749  1.0
  Ge  Ge14  1  0.249  0.251  0.249  1.0
  Ge  Ge15  1  0.168  0.832  0.168  1.0
[/CIF]
.