The crystal structure described by Ni7Ge4 crystallizes in the hexagonal P-6m2 space group. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 14-coordinate geometry to one Ni(1), one Ni(2), three equivalent Ni(3), three equivalent Ni(4), three equivalent Ge(1), and three equivalent Ge(3) atoms. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(2), three equivalent Ni(4), three equivalent Ge(1), and three equivalent Ge(2) atoms. In the third Ni site, Ni(3) is bonded in a 11-coordinate geometry to six equivalent Ni(1), two equivalent Ge(1), and three equivalent Ge(3) atoms. In the fourth Ni site, Ni(4) is bonded in a 11-coordinate geometry to three equivalent Ni(1), three equivalent Ni(2), one Ge(2), one Ge(3), and three equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to one Ni(3), three equivalent Ni(1), three equivalent Ni(2), and three equivalent Ni(4) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Ni(4) and six equivalent Ni(2) atoms. In the third Ge site, Ge(3) is bonded in a 11-coordinate geometry to two equivalent Ni(4), three equivalent Ni(3), and six equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ni7Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.936
_cell_length_b   3.936
_cell_length_c   9.922
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   133.102
_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
  Ni  Ni0  1  0.000  0.000  0.373  1.0
  Ni  Ni1  1  0.000  0.000  0.879  1.0
  Ni  Ni2  1  0.000  0.000  0.121  1.0
  Ni  Ni3  1  0.000  0.000  0.627  1.0
  Ni  Ni4  1  0.667  0.333  0.500  1.0
  Ni  Ni5  1  0.333  0.667  0.245  1.0
  Ni  Ni6  1  0.333  0.667  0.755  1.0
  Ge  Ge7  1  0.667  0.333  0.244  1.0
  Ge  Ge8  1  0.667  0.333  0.756  1.0
  Ge  Ge9  1  0.333  0.667  0.000  1.0
  Ge  Ge10  1  0.333  0.667  0.500  1.0
[/CIF]
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The crystal structure described by Ni7Ge4 crystallizes in the hexagonal P-6m2 space group. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 14-coordinate geometry to one Ni(1), one Ni(2), three equivalent Ni(3), three equivalent Ni(4), three equivalent Ge(1), and three equivalent Ge(3) atoms. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(2), three equivalent Ni(4), three equivalent Ge(1), and three equivalent Ge(2) atoms. In the third Ni site, Ni(3) is bonded in a 11-coordinate geometry to six equivalent Ni(1), two equivalent Ge(1), and three equivalent Ge(3) atoms. In the fourth Ni site, Ni(4) is bonded in a 11-coordinate geometry to three equivalent Ni(1), three equivalent Ni(2), one Ge(2), one Ge(3), and three equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to one Ni(3), three equivalent Ni(1), three equivalent Ni(2), and three equivalent Ni(4) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Ni(4) and six equivalent Ni(2) atoms. In the third Ge site, Ge(3) is bonded in a 11-coordinate geometry to two equivalent Ni(4), three equivalent Ni(3), and six equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ni7Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.936
_cell_length_b   3.936
_cell_length_c   9.922
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   133.102
_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
  Ni  Ni0  1  0.000  0.000  0.373  1.0
  Ni  Ni1  1  0.000  0.000  0.879  1.0
  Ni  Ni2  1  0.000  0.000  0.121  1.0
  Ni  Ni3  1  0.000  0.000  0.627  1.0
  Ni  Ni4  1  0.667  0.333  0.500  1.0
  Ni  Ni5  1  0.333  0.667  0.245  1.0
  Ni  Ni6  1  0.333  0.667  0.755  1.0
  Ge  Ge7  1  0.667  0.333  0.244  1.0
  Ge  Ge8  1  0.667  0.333  0.756  1.0
  Ge  Ge9  1  0.333  0.667  0.000  1.0
  Ge  Ge10  1  0.333  0.667  0.500  1.0
[/CIF]
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