The structure described by Nd3Ni2Sn7 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 14-coordinate geometry to two equivalent Ni(1), four equivalent Sn(1), four equivalent Sn(2), and four equivalent Sn(3) atoms. In the second Nd site, Nd(2) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(2), two equivalent Sn(3), and six equivalent Sn(4) atoms. Ni(1) is bonded in a 5-coordinate geometry to one Nd(1), four equivalent Nd(2), one Sn(4), two equivalent Sn(2), and two equivalent Sn(3) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a square co-planar geometry to four equivalent Nd(1) atoms. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), and two equivalent Ni(1) atoms. In the third Sn site, Sn(3) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), and two equivalent Ni(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 9-coordinate geometry to six equivalent Nd(2), one Ni(1), and two equivalent Sn(4) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd3Ni2Sn7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.938
_cell_length_b   13.938
_cell_length_c   4.617
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   160.639
_symmetry_Int_Tables_number   1
_cell_volume   297.359
_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
  Nd  Nd0  1  0.500  0.500  0.500  1.0
  Nd  Nd1  1  0.185  0.815  0.000  1.0
  Nd  Nd2  1  0.815  0.185  0.000  1.0
  Ni  Ni3  1  0.371  0.628  0.500  1.0
  Ni  Ni4  1  0.628  0.371  0.500  1.0
  Sn  Sn5  1  0.000  0.000  0.000  1.0
  Sn  Sn6  1  0.411  0.589  0.000  1.0
  Sn  Sn7  1  0.589  0.411  0.000  1.0
  Sn  Sn8  1  0.090  0.910  0.500  1.0
  Sn  Sn9  1  0.910  0.090  0.500  1.0
  Sn  Sn10  1  0.281  0.719  0.500  1.0
  Sn  Sn11  1  0.719  0.281  0.500  1.0
[/CIF]
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The structure described by Nd3Ni2Sn7 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 14-coordinate geometry to two equivalent Ni(1), four equivalent Sn(1), four equivalent Sn(2), and four equivalent Sn(3) atoms. In the second Nd site, Nd(2) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(2), two equivalent Sn(3), and six equivalent Sn(4) atoms. Ni(1) is bonded in a 5-coordinate geometry to one Nd(1), four equivalent Nd(2), one Sn(4), two equivalent Sn(2), and two equivalent Sn(3) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a square co-planar geometry to four equivalent Nd(1) atoms. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), and two equivalent Ni(1) atoms. In the third Sn site, Sn(3) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), and two equivalent Ni(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 9-coordinate geometry to six equivalent Nd(2), one Ni(1), and two equivalent Sn(4) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd3Ni2Sn7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.938
_cell_length_b   13.938
_cell_length_c   4.617
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   160.639
_symmetry_Int_Tables_number   1
_cell_volume   297.359
_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
  Nd  Nd0  1  0.500  0.500  0.500  1.0
  Nd  Nd1  1  0.185  0.815  0.000  1.0
  Nd  Nd2  1  0.815  0.185  0.000  1.0
  Ni  Ni3  1  0.371  0.628  0.500  1.0
  Ni  Ni4  1  0.628  0.371  0.500  1.0
  Sn  Sn5  1  0.000  0.000  0.000  1.0
  Sn  Sn6  1  0.411  0.589  0.000  1.0
  Sn  Sn7  1  0.589  0.411  0.000  1.0
  Sn  Sn8  1  0.090  0.910  0.500  1.0
  Sn  Sn9  1  0.910  0.090  0.500  1.0
  Sn  Sn10  1  0.281  0.719  0.500  1.0
  Sn  Sn11  1  0.719  0.281  0.500  1.0
[/CIF]
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