The structure described by Ce2NiGe3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to twelve equivalent Ge(1) atoms to form CeGe12 cuboctahedra that share edges with twelve equivalent Ce(2)Ni4Ge8 cuboctahedra, faces with two equivalent Ce(1)Ge12 cuboctahedra, and faces with six equivalent Ce(2)Ni4Ge8 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Ni(1) and eight equivalent Ge(1) atoms to form CeNi4Ge8 cuboctahedra that share edges with four equivalent Ce(1)Ge12 cuboctahedra, edges with eight equivalent Ce(2)Ni4Ge8 cuboctahedra, faces with two equivalent Ce(1)Ge12 cuboctahedra, and faces with six equivalent Ce(2)Ni4Ge8 cuboctahedra. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Ce(2) and three equivalent Ge(1) atoms. Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Ni(1), and two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_Ce2NiGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.294
_cell_length_b   8.291
_cell_length_c   8.291
_cell_angle_alpha   119.999
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   255.650
_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
  Ce  Ce0  1  0.500  0.000  0.000  1.0
  Ce  Ce1  1  0.500  0.000  0.500  1.0
  Ce  Ce2  1  0.500  0.500  0.500  1.0
  Ce  Ce3  1  0.500  0.500  0.000  1.0
  Ni  Ni4  1  0.000  0.667  0.333  1.0
  Ni  Ni5  1  0.000  0.333  0.667  1.0
  Ge  Ge6  1  0.000  0.827  0.173  1.0
  Ge  Ge7  1  0.000  0.827  0.655  1.0
  Ge  Ge8  1  0.000  0.345  0.173  1.0
  Ge  Ge9  1  0.000  0.173  0.827  1.0
  Ge  Ge10  1  0.000  0.655  0.827  1.0
  Ge  Ge11  1  0.000  0.173  0.345  1.0
[/CIF]
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The structure described by Ce2NiGe3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to twelve equivalent Ge(1) atoms to form CeGe12 cuboctahedra that share edges with twelve equivalent Ce(2)Ni4Ge8 cuboctahedra, faces with two equivalent Ce(1)Ge12 cuboctahedra, and faces with six equivalent Ce(2)Ni4Ge8 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Ni(1) and eight equivalent Ge(1) atoms to form CeNi4Ge8 cuboctahedra that share edges with four equivalent Ce(1)Ge12 cuboctahedra, edges with eight equivalent Ce(2)Ni4Ge8 cuboctahedra, faces with two equivalent Ce(1)Ge12 cuboctahedra, and faces with six equivalent Ce(2)Ni4Ge8 cuboctahedra. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Ce(2) and three equivalent Ge(1) atoms. Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Ni(1), and two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_Ce2NiGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.294
_cell_length_b   8.291
_cell_length_c   8.291
_cell_angle_alpha   119.999
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   255.650
_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
  Ce  Ce0  1  0.500  0.000  0.000  1.0
  Ce  Ce1  1  0.500  0.000  0.500  1.0
  Ce  Ce2  1  0.500  0.500  0.500  1.0
  Ce  Ce3  1  0.500  0.500  0.000  1.0
  Ni  Ni4  1  0.000  0.667  0.333  1.0
  Ni  Ni5  1  0.000  0.333  0.667  1.0
  Ge  Ge6  1  0.000  0.827  0.173  1.0
  Ge  Ge7  1  0.000  0.827  0.655  1.0
  Ge  Ge8  1  0.000  0.345  0.173  1.0
  Ge  Ge9  1  0.000  0.173  0.827  1.0
  Ge  Ge10  1  0.000  0.655  0.827  1.0
  Ge  Ge11  1  0.000  0.173  0.345  1.0
[/CIF]
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