The material described by Ni2Ge is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to six equivalent Ni(2) and five equivalent Ge(1) atoms. In the second Ni site, Ni(2) is bonded in a 13-coordinate geometry to two equivalent Ni(2), six equivalent Ni(1), and five equivalent Ge(1) atoms. Ge(1) is bonded in a 10-coordinate geometry to five equivalent Ni(1) and five 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   3.788
_cell_length_b   5.096
_cell_length_c   7.179
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   138.573
_cell_formula_units_Z   4
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  0.750  0.671  0.940  1.0
  Ni  Ni1  1  0.250  0.329  0.060  1.0
  Ni  Ni2  1  0.750  0.171  0.560  1.0
  Ni  Ni3  1  0.250  0.829  0.440  1.0
  Ni  Ni4  1  0.750  0.045  0.207  1.0
  Ni  Ni5  1  0.250  0.955  0.793  1.0
  Ni  Ni6  1  0.750  0.545  0.293  1.0
  Ni  Ni7  1  0.250  0.455  0.707  1.0
  Ge  Ge8  1  0.750  0.713  0.614  1.0
  Ge  Ge9  1  0.250  0.287  0.386  1.0
  Ge  Ge10  1  0.750  0.213  0.886  1.0
  Ge  Ge11  1  0.250  0.787  0.114  1.0
[/CIF]
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The material described by Ni2Ge is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to six equivalent Ni(2) and five equivalent Ge(1) atoms. In the second Ni site, Ni(2) is bonded in a 13-coordinate geometry to two equivalent Ni(2), six equivalent Ni(1), and five equivalent Ge(1) atoms. Ge(1) is bonded in a 10-coordinate geometry to five equivalent Ni(1) and five 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   3.788
_cell_length_b   5.096
_cell_length_c   7.179
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   138.573
_cell_formula_units_Z   4
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  0.750  0.671  0.940  1.0
  Ni  Ni1  1  0.250  0.329  0.060  1.0
  Ni  Ni2  1  0.750  0.171  0.560  1.0
  Ni  Ni3  1  0.250  0.829  0.440  1.0
  Ni  Ni4  1  0.750  0.045  0.207  1.0
  Ni  Ni5  1  0.250  0.955  0.793  1.0
  Ni  Ni6  1  0.750  0.545  0.293  1.0
  Ni  Ni7  1  0.250  0.455  0.707  1.0
  Ge  Ge8  1  0.750  0.713  0.614  1.0
  Ge  Ge9  1  0.250  0.287  0.386  1.0
  Ge  Ge10  1  0.750  0.213  0.886  1.0
  Ge  Ge11  1  0.250  0.787  0.114  1.0
[/CIF]
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