The material structure described by CaGe2 is Caswellsilverite-derived structured and crystallizes in the trigonal P-3m1 space group. Ca(1) is bonded to six equivalent Ge(1) atoms to form CaGe6 octahedra that share corners with six equivalent Ge(1)Ca3Ge3 octahedra, edges with six equivalent Ca(1)Ge6 octahedra, and edges with six equivalent Ge(1)Ca3Ge3 octahedra. The corner-sharing octahedral tilt angles are 16°. Ge(1) is bonded to three equivalent Ca(1) and three equivalent Ge(1) atoms to form distorted GeCa3Ge3 octahedra that share corners with three equivalent Ca(1)Ge6 octahedra, corners with three equivalent Ge(1)Ca3Ge3 octahedra, edges with three equivalent Ca(1)Ge6 octahedra, and edges with nine equivalent Ge(1)Ca3Ge3 octahedra. The corner-sharing octahedral tilt angles range from 0-16°. is represented by the CIF file [CIF]
data_CaGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.017
_cell_length_b   4.017
_cell_length_c   4.942
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   69.065
_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
  Ca  Ca0  1  0.000  0.000  0.000  1.0
  Ge  Ge1  1  0.667  0.333  0.604  1.0
  Ge  Ge2  1  0.333  0.667  0.396  1.0
[/CIF]
.
The material structure described by CaGe2 is Caswellsilverite-derived structured and crystallizes in the trigonal P-3m1 space group. Ca(1) is bonded to six equivalent Ge(1) atoms to form CaGe6 octahedra that share corners with six equivalent Ge(1)Ca3Ge3 octahedra, edges with six equivalent Ca(1)Ge6 octahedra, and edges with six equivalent Ge(1)Ca3Ge3 octahedra. The corner-sharing octahedral tilt angles are 16°. Ge(1) is bonded to three equivalent Ca(1) and three equivalent Ge(1) atoms to form distorted GeCa3Ge3 octahedra that share corners with three equivalent Ca(1)Ge6 octahedra, corners with three equivalent Ge(1)Ca3Ge3 octahedra, edges with three equivalent Ca(1)Ge6 octahedra, and edges with nine equivalent Ge(1)Ca3Ge3 octahedra. The corner-sharing octahedral tilt angles range from 0-16°. is represented by the CIF file [CIF]
data_CaGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.017
_cell_length_b   4.017
_cell_length_c   4.942
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   69.065
_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
  Ca  Ca0  1  0.000  0.000  0.000  1.0
  Ge  Ge1  1  0.667  0.333  0.604  1.0
  Ge  Ge2  1  0.333  0.667  0.396  1.0
[/CIF]
.