The structure described by LaNi9Ge4 crystallizes in the tetragonal I4/mcm space group. La(1) is bonded in a 24-coordinate geometry to eight equivalent Ni(1), eight equivalent Ni(2), and eight equivalent Ge(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent La(1), one Ni(3), two equivalent Ni(2), three equivalent Ni(1), and four equivalent Ge(1) atoms to form distorted NiLa2Ni6Ge4 cuboctahedra that share  a cornercorner with one Ni(3)Ni8Ge4 cuboctahedra, corners with eleven equivalent Ni(1)La2Ni6Ge4 cuboctahedra, faces with two equivalent Ni(3)Ni8Ge4 cuboctahedra, and faces with seven equivalent Ni(1)La2Ni6Ge4 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to two equivalent La(1), one Ni(3), two equivalent Ni(1), and four equivalent Ge(1) atoms. In the third Ni site, Ni(3) is bonded to four equivalent Ni(1), four equivalent Ni(2), and four equivalent Ge(1) atoms to form a mixture of distorted face and corner-sharing NiNi8Ge4 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to two equivalent La(1), one Ni(3), four equivalent Ni(1), and four equivalent Ni(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaNi9Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.171
_cell_length_b   8.171
_cell_length_c   8.171
_cell_angle_alpha   121.449
_cell_angle_beta   121.449
_cell_angle_gamma   87.508
_symmetry_Int_Tables_number   1
_cell_volume   376.939
_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
  La  La0  1  0.750  0.750  0.000  1.0
  La  La1  1  0.250  0.250  0.000  1.0
  Ni  Ni2  1  0.068  0.204  0.272  1.0
  Ni  Ni3  1  0.932  0.796  0.728  1.0
  Ni  Ni4  1  0.568  0.296  0.864  1.0
  Ni  Ni5  1  0.432  0.704  0.136  1.0
  Ni  Ni6  1  0.796  0.068  0.864  1.0
  Ni  Ni7  1  0.204  0.932  0.136  1.0
  Ni  Ni8  1  0.704  0.568  0.272  1.0
  Ni  Ni9  1  0.296  0.432  0.728  1.0
  Ni  Ni10  1  0.445  0.945  0.753  1.0
  Ni  Ni11  1  0.192  0.692  0.247  1.0
  Ni  Ni12  1  0.945  0.192  0.500  1.0
  Ni  Ni13  1  0.692  0.445  0.500  1.0
  Ni  Ni14  1  0.555  0.055  0.247  1.0
  Ni  Ni15  1  0.808  0.308  0.753  1.0
  Ni  Ni16  1  0.055  0.808  0.500  1.0
  Ni  Ni17  1  0.308  0.555  0.500  1.0
  Ni  Ni18  1  0.000  0.500  0.500  1.0
  Ni  Ni19  1  0.500  0.000  0.500  1.0
  Ge  Ge20  1  0.051  0.551  0.844  1.0
  Ge  Ge21  1  0.707  0.207  0.156  1.0
  Ge  Ge22  1  0.551  0.707  0.500  1.0
  Ge  Ge23  1  0.207  0.051  0.500  1.0
  Ge  Ge24  1  0.949  0.449  0.156  1.0
  Ge  Ge25  1  0.293  0.793  0.844  1.0
  Ge  Ge26  1  0.449  0.293  0.500  1.0
  Ge  Ge27  1  0.793  0.949  0.500  1.0
[/CIF]
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The structure described by LaNi9Ge4 crystallizes in the tetragonal I4/mcm space group. La(1) is bonded in a 24-coordinate geometry to eight equivalent Ni(1), eight equivalent Ni(2), and eight equivalent Ge(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent La(1), one Ni(3), two equivalent Ni(2), three equivalent Ni(1), and four equivalent Ge(1) atoms to form distorted NiLa2Ni6Ge4 cuboctahedra that share  a cornercorner with one Ni(3)Ni8Ge4 cuboctahedra, corners with eleven equivalent Ni(1)La2Ni6Ge4 cuboctahedra, faces with two equivalent Ni(3)Ni8Ge4 cuboctahedra, and faces with seven equivalent Ni(1)La2Ni6Ge4 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to two equivalent La(1), one Ni(3), two equivalent Ni(1), and four equivalent Ge(1) atoms. In the third Ni site, Ni(3) is bonded to four equivalent Ni(1), four equivalent Ni(2), and four equivalent Ge(1) atoms to form a mixture of distorted face and corner-sharing NiNi8Ge4 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to two equivalent La(1), one Ni(3), four equivalent Ni(1), and four equivalent Ni(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaNi9Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.171
_cell_length_b   8.171
_cell_length_c   8.171
_cell_angle_alpha   121.449
_cell_angle_beta   121.449
_cell_angle_gamma   87.508
_symmetry_Int_Tables_number   1
_cell_volume   376.939
_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
  La  La0  1  0.750  0.750  0.000  1.0
  La  La1  1  0.250  0.250  0.000  1.0
  Ni  Ni2  1  0.068  0.204  0.272  1.0
  Ni  Ni3  1  0.932  0.796  0.728  1.0
  Ni  Ni4  1  0.568  0.296  0.864  1.0
  Ni  Ni5  1  0.432  0.704  0.136  1.0
  Ni  Ni6  1  0.796  0.068  0.864  1.0
  Ni  Ni7  1  0.204  0.932  0.136  1.0
  Ni  Ni8  1  0.704  0.568  0.272  1.0
  Ni  Ni9  1  0.296  0.432  0.728  1.0
  Ni  Ni10  1  0.445  0.945  0.753  1.0
  Ni  Ni11  1  0.192  0.692  0.247  1.0
  Ni  Ni12  1  0.945  0.192  0.500  1.0
  Ni  Ni13  1  0.692  0.445  0.500  1.0
  Ni  Ni14  1  0.555  0.055  0.247  1.0
  Ni  Ni15  1  0.808  0.308  0.753  1.0
  Ni  Ni16  1  0.055  0.808  0.500  1.0
  Ni  Ni17  1  0.308  0.555  0.500  1.0
  Ni  Ni18  1  0.000  0.500  0.500  1.0
  Ni  Ni19  1  0.500  0.000  0.500  1.0
  Ge  Ge20  1  0.051  0.551  0.844  1.0
  Ge  Ge21  1  0.707  0.207  0.156  1.0
  Ge  Ge22  1  0.551  0.707  0.500  1.0
  Ge  Ge23  1  0.207  0.051  0.500  1.0
  Ge  Ge24  1  0.949  0.449  0.156  1.0
  Ge  Ge25  1  0.293  0.793  0.844  1.0
  Ge  Ge26  1  0.449  0.293  0.500  1.0
  Ge  Ge27  1  0.793  0.949  0.500  1.0
[/CIF]
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