The compound described by Ba2Ni5Ge4 crystallizes in the monoclinic C2/m space group. Ba(1) is bonded in a 9-coordinate geometry to two equivalent Ni(2), two equivalent Ge(1), and five equivalent Ge(2) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to two equivalent Ni(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one Ni(3), one Ge(2), and three equivalent Ge(1) atoms. In the third Ni site, Ni(3) is bonded to two equivalent Ni(2), four equivalent Ni(1), two equivalent Ge(2), and four equivalent Ge(1) atoms to form distorted face-sharing NiNi6Ge6 cuboctahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ba(1), two equivalent Ni(1), two equivalent Ni(3), and three equivalent Ni(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to five equivalent Ba(1), one Ni(2), one Ni(3), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ba2Ni5Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.555
_cell_length_b   6.555
_cell_length_c   9.555
_cell_angle_alpha   63.073
_cell_angle_beta   63.073
_cell_angle_gamma   35.817
_symmetry_Int_Tables_number   1
_cell_volume   211.327
_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
  Ba  Ba0  1  0.176  0.176  0.858  1.0
  Ba  Ba1  1  0.824  0.824  0.142  1.0
  Ni  Ni2  1  0.034  0.034  0.309  1.0
  Ni  Ni3  1  0.966  0.966  0.691  1.0
  Ni  Ni4  1  0.336  0.336  0.425  1.0
  Ni  Ni5  1  0.664  0.664  0.575  1.0
  Ni  Ni6  1  0.500  0.500  0.500  1.0
  Ge  Ge7  1  0.856  0.856  0.551  1.0
  Ge  Ge8  1  0.144  0.144  0.449  1.0
  Ge  Ge9  1  0.468  0.468  0.801  1.0
  Ge  Ge10  1  0.532  0.532  0.199  1.0
[/CIF]
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The compound described by Ba2Ni5Ge4 crystallizes in the monoclinic C2/m space group. Ba(1) is bonded in a 9-coordinate geometry to two equivalent Ni(2), two equivalent Ge(1), and five equivalent Ge(2) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to two equivalent Ni(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one Ni(3), one Ge(2), and three equivalent Ge(1) atoms. In the third Ni site, Ni(3) is bonded to two equivalent Ni(2), four equivalent Ni(1), two equivalent Ge(2), and four equivalent Ge(1) atoms to form distorted face-sharing NiNi6Ge6 cuboctahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ba(1), two equivalent Ni(1), two equivalent Ni(3), and three equivalent Ni(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to five equivalent Ba(1), one Ni(2), one Ni(3), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ba2Ni5Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.555
_cell_length_b   6.555
_cell_length_c   9.555
_cell_angle_alpha   63.073
_cell_angle_beta   63.073
_cell_angle_gamma   35.817
_symmetry_Int_Tables_number   1
_cell_volume   211.327
_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
  Ba  Ba0  1  0.176  0.176  0.858  1.0
  Ba  Ba1  1  0.824  0.824  0.142  1.0
  Ni  Ni2  1  0.034  0.034  0.309  1.0
  Ni  Ni3  1  0.966  0.966  0.691  1.0
  Ni  Ni4  1  0.336  0.336  0.425  1.0
  Ni  Ni5  1  0.664  0.664  0.575  1.0
  Ni  Ni6  1  0.500  0.500  0.500  1.0
  Ge  Ge7  1  0.856  0.856  0.551  1.0
  Ge  Ge8  1  0.144  0.144  0.449  1.0
  Ge  Ge9  1  0.468  0.468  0.801  1.0
  Ge  Ge10  1  0.532  0.532  0.199  1.0
[/CIF]
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