The material structure described by Ni2FeGe is alpha La-derived structured and crystallizes in the tetragonal P4/mmm space group. Fe(1) is bonded to eight equivalent Ni(1) and four equivalent Ge(1) atoms to form FeNi8Ge4 cuboctahedra that share corners with twelve equivalent Fe(1)Ni8Ge4 cuboctahedra, edges with eight equivalent Ge(1)Fe4Ni8 cuboctahedra, edges with sixteen equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, faces with four equivalent Ge(1)Fe4Ni8 cuboctahedra, faces with six equivalent Fe(1)Ni8Ge4 cuboctahedra, and faces with eight equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra. Ni(1) is bonded to four equivalent Fe(1), four equivalent Ni(1), and four equivalent Ge(1) atoms to form NiFe4Ni4Ge4 cuboctahedra that share corners with twelve equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, edges with eight equivalent Fe(1)Ni8Ge4 cuboctahedra, edges with eight equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, edges with eight equivalent Ge(1)Fe4Ni8 cuboctahedra, faces with four equivalent Fe(1)Ni8Ge4 cuboctahedra, faces with four equivalent Ge(1)Fe4Ni8 cuboctahedra, and faces with ten equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra. Ge(1) is bonded to four equivalent Fe(1) and eight equivalent Ni(1) atoms to form GeFe4Ni8 cuboctahedra that share corners with twelve equivalent Ge(1)Fe4Ni8 cuboctahedra, edges with eight equivalent Fe(1)Ni8Ge4 cuboctahedra, edges with sixteen equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, faces with four equivalent Fe(1)Ni8Ge4 cuboctahedra, faces with six equivalent Ge(1)Fe4Ni8 cuboctahedra, and faces with eight equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_FeNi2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.518
_cell_length_b   3.518
_cell_length_c   3.675
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   45.488
_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
  Fe  Fe0  1  0.500  0.500  0.000  1.0
  Ni  Ni1  1  0.500  0.000  0.500  1.0
  Ni  Ni2  1  0.000  0.500  0.500  1.0
  Ge  Ge3  1  0.000  0.000  0.000  1.0
[/CIF]
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The material structure described by Ni2FeGe is alpha La-derived structured and crystallizes in the tetragonal P4/mmm space group. Fe(1) is bonded to eight equivalent Ni(1) and four equivalent Ge(1) atoms to form FeNi8Ge4 cuboctahedra that share corners with twelve equivalent Fe(1)Ni8Ge4 cuboctahedra, edges with eight equivalent Ge(1)Fe4Ni8 cuboctahedra, edges with sixteen equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, faces with four equivalent Ge(1)Fe4Ni8 cuboctahedra, faces with six equivalent Fe(1)Ni8Ge4 cuboctahedra, and faces with eight equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra. Ni(1) is bonded to four equivalent Fe(1), four equivalent Ni(1), and four equivalent Ge(1) atoms to form NiFe4Ni4Ge4 cuboctahedra that share corners with twelve equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, edges with eight equivalent Fe(1)Ni8Ge4 cuboctahedra, edges with eight equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, edges with eight equivalent Ge(1)Fe4Ni8 cuboctahedra, faces with four equivalent Fe(1)Ni8Ge4 cuboctahedra, faces with four equivalent Ge(1)Fe4Ni8 cuboctahedra, and faces with ten equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra. Ge(1) is bonded to four equivalent Fe(1) and eight equivalent Ni(1) atoms to form GeFe4Ni8 cuboctahedra that share corners with twelve equivalent Ge(1)Fe4Ni8 cuboctahedra, edges with eight equivalent Fe(1)Ni8Ge4 cuboctahedra, edges with sixteen equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra, faces with four equivalent Fe(1)Ni8Ge4 cuboctahedra, faces with six equivalent Ge(1)Fe4Ni8 cuboctahedra, and faces with eight equivalent Ni(1)Fe4Ni4Ge4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_FeNi2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.518
_cell_length_b   3.518
_cell_length_c   3.675
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   45.488
_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
  Fe  Fe0  1  0.500  0.500  0.000  1.0
  Ni  Ni1  1  0.500  0.000  0.500  1.0
  Ni  Ni2  1  0.000  0.500  0.500  1.0
  Ge  Ge3  1  0.000  0.000  0.000  1.0
[/CIF]
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