The compound described by Ni2Ge crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to six equivalent Ni(2) and five equivalent Ge(1) atoms to form a mixture of distorted face and corner-sharing NiNi6Ge5 trigonal bipyramids. In the second Ni site, Ni(2) is bonded in a 14-coordinate geometry to two equivalent Ni(2), six equivalent Ni(1), and six equivalent Ge(1) atoms. Ge(1) is bonded in a 11-coordinate geometry to five equivalent Ni(1) and six equivalent Ni(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ni2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.980
_cell_length_b   3.980
_cell_length_c   5.024
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   68.912
_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
  Ni  Ni0  1  0.667  0.333  0.250  1.0
  Ni  Ni1  1  0.333  0.667  0.750  1.0
  Ni  Ni2  1  0.000  0.000  0.000  1.0
  Ni  Ni3  1  0.000  0.000  0.500  1.0
  Ge  Ge4  1  0.667  0.333  0.750  1.0
  Ge  Ge5  1  0.333  0.667  0.250  1.0
[/CIF]
.
The compound described by Ni2Ge crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to six equivalent Ni(2) and five equivalent Ge(1) atoms to form a mixture of distorted face and corner-sharing NiNi6Ge5 trigonal bipyramids. In the second Ni site, Ni(2) is bonded in a 14-coordinate geometry to two equivalent Ni(2), six equivalent Ni(1), and six equivalent Ge(1) atoms. Ge(1) is bonded in a 11-coordinate geometry to five equivalent Ni(1) and six equivalent Ni(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ni2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.980
_cell_length_b   3.980
_cell_length_c   5.024
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   68.912
_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
  Ni  Ni0  1  0.667  0.333  0.250  1.0
  Ni  Ni1  1  0.333  0.667  0.750  1.0
  Ni  Ni2  1  0.000  0.000  0.000  1.0
  Ni  Ni3  1  0.000  0.000  0.500  1.0
  Ge  Ge4  1  0.667  0.333  0.750  1.0
  Ge  Ge5  1  0.333  0.667  0.250  1.0
[/CIF]
.