The structure described by CaGe2 is alpha boron-derived structured and crystallizes in the hexagonal P6_3mc space group. Ca(1) is bonded in a 7-coordinate geometry to three equivalent Ge(2) and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent Ca(1) and three equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Ca(1) and three equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_CaGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.005
_cell_length_b   4.005
_cell_length_c   10.163
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   141.147
_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
  Ca  Ca0  1  0.333  0.667  0.292  1.0
  Ca  Ca1  1  0.667  0.333  0.792  1.0
  Ge  Ge2  1  0.333  0.667  0.605  1.0
  Ge  Ge3  1  0.667  0.333  0.105  1.0
  Ge  Ge4  1  0.000  0.000  0.000  1.0
  Ge  Ge5  1  0.000  0.000  0.500  1.0
[/CIF]
.
The structure described by CaGe2 is alpha boron-derived structured and crystallizes in the hexagonal P6_3mc space group. Ca(1) is bonded in a 7-coordinate geometry to three equivalent Ge(2) and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent Ca(1) and three equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Ca(1) and three equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_CaGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.005
_cell_length_b   4.005
_cell_length_c   10.163
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   141.147
_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
  Ca  Ca0  1  0.333  0.667  0.292  1.0
  Ca  Ca1  1  0.667  0.333  0.792  1.0
  Ge  Ge2  1  0.333  0.667  0.605  1.0
  Ge  Ge3  1  0.667  0.333  0.105  1.0
  Ge  Ge4  1  0.000  0.000  0.000  1.0
  Ge  Ge5  1  0.000  0.000  0.500  1.0
[/CIF]
.