The compound described by Y5Ge3C crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 6-coordinate geometry to six equivalent Ge(1) atoms. In the second Y site, Y(2) is bonded in a 2-coordinate geometry to five equivalent Ge(1) and two equivalent C(1) atoms. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Y(1) and five equivalent Y(2) atoms. C(1) is bonded to six equivalent Y(2) atoms to form face-sharing CY6 octahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y5Ge3C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.488
_cell_length_b   8.488
_cell_length_c   6.505
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.959
_symmetry_Int_Tables_number   1
_cell_volume   406.056
_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
  Y  Y0  1  0.666  0.334  0.500  1.0
  Y  Y1  1  0.334  0.666  0.500  1.0
  Y  Y2  1  0.334  0.666  0.000  1.0
  Y  Y3  1  0.666  0.334  0.000  1.0
  Y  Y4  1  0.779  0.779  0.250  1.0
  Y  Y5  1  0.221  1.000  0.250  1.0
  Y  Y6  1  1.000  0.221  0.250  1.0
  Y  Y7  1  0.221  0.221  0.750  1.0
  Y  Y8  1  0.779  0.000  0.750  1.0
  Y  Y9  1  0.000  0.779  0.750  1.0
  Ge  Ge10  1  0.409  0.409  0.250  1.0
  Ge  Ge11  1  0.590  0.000  0.250  1.0
  Ge  Ge12  1  0.000  0.590  0.250  1.0
  Ge  Ge13  1  0.591  0.591  0.750  1.0
  Ge  Ge14  1  0.410  1.000  0.750  1.0
  Ge  Ge15  1  1.000  0.410  0.750  1.0
  C  C16  1  0.000  0.000  0.500  1.0
  C  C17  1  1.000  1.000  1.000  1.0
[/CIF]
.
The compound described by Y5Ge3C crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 6-coordinate geometry to six equivalent Ge(1) atoms. In the second Y site, Y(2) is bonded in a 2-coordinate geometry to five equivalent Ge(1) and two equivalent C(1) atoms. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Y(1) and five equivalent Y(2) atoms. C(1) is bonded to six equivalent Y(2) atoms to form face-sharing CY6 octahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y5Ge3C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.488
_cell_length_b   8.488
_cell_length_c   6.505
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.959
_symmetry_Int_Tables_number   1
_cell_volume   406.056
_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
  Y  Y0  1  0.666  0.334  0.500  1.0
  Y  Y1  1  0.334  0.666  0.500  1.0
  Y  Y2  1  0.334  0.666  0.000  1.0
  Y  Y3  1  0.666  0.334  0.000  1.0
  Y  Y4  1  0.779  0.779  0.250  1.0
  Y  Y5  1  0.221  1.000  0.250  1.0
  Y  Y6  1  1.000  0.221  0.250  1.0
  Y  Y7  1  0.221  0.221  0.750  1.0
  Y  Y8  1  0.779  0.000  0.750  1.0
  Y  Y9  1  0.000  0.779  0.750  1.0
  Ge  Ge10  1  0.409  0.409  0.250  1.0
  Ge  Ge11  1  0.590  0.000  0.250  1.0
  Ge  Ge12  1  0.000  0.590  0.250  1.0
  Ge  Ge13  1  0.591  0.591  0.750  1.0
  Ge  Ge14  1  0.410  1.000  0.750  1.0
  Ge  Ge15  1  1.000  0.410  0.750  1.0
  C  C16  1  0.000  0.000  0.500  1.0
  C  C17  1  1.000  1.000  1.000  1.0
[/CIF]
.