The structure described by Co3Ga is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to eight equivalent Co(1) and four equivalent Ga(1) atoms to form CoGa4Co8 cuboctahedra that share corners with four equivalent Ga(1)Co12 cuboctahedra; corners with fourteen equivalent Co(1)Ga4Co8 cuboctahedra; edges with six equivalent Ga(1)Co12 cuboctahedra; edges with twelve equivalent Co(1)Ga4Co8 cuboctahedra; faces with four equivalent Ga(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ga4Co8 cuboctahedra. In the second Co site, Co(1) is bonded to eight equivalent Co(1) and four equivalent Ga(1) atoms to form CoGa4Co8 cuboctahedra that share corners with four equivalent Ga(1)Co12 cuboctahedra; corners with fourteen Co(1,1)Ga4Co8 cuboctahedra; edges with six equivalent Ga(1)Co12 cuboctahedra; edges with twelve equivalent Co(1)Ga4Co8 cuboctahedra; faces with four equivalent Ga(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ga4Co8 cuboctahedra. Ga(1) is bonded to twelve Co(1,1) atoms to form GaCo12 cuboctahedra that share corners with six equivalent Ga(1)Co12 cuboctahedra; corners with twelve Co(1,1)Ga4Co8 cuboctahedra; edges with eighteen Co(1,1)Ga4Co8 cuboctahedra; faces with eight equivalent Ga(1)Co12 cuboctahedra; and faces with twelve Co(1,1)Ga4Co8 cuboctahedra. is represented by the CIF card [CIF]
data_GaCo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.086
_cell_length_b   5.086
_cell_length_c   4.111
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   92.072
_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
  Ga  Ga0  1  0.333  0.667  0.750  1.0
  Ga  Ga1  1  0.667  0.333  0.250  1.0
  Co  Co2  1  0.166  0.331  0.250  1.0
  Co  Co3  1  0.669  0.834  0.250  1.0
  Co  Co4  1  0.166  0.834  0.250  1.0
  Co  Co5  1  0.834  0.669  0.750  1.0
  Co  Co6  1  0.331  0.166  0.750  1.0
  Co  Co7  1  0.834  0.166  0.750  1.0
[/CIF]
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The structure described by Co3Ga is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to eight equivalent Co(1) and four equivalent Ga(1) atoms to form CoGa4Co8 cuboctahedra that share corners with four equivalent Ga(1)Co12 cuboctahedra; corners with fourteen equivalent Co(1)Ga4Co8 cuboctahedra; edges with six equivalent Ga(1)Co12 cuboctahedra; edges with twelve equivalent Co(1)Ga4Co8 cuboctahedra; faces with four equivalent Ga(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ga4Co8 cuboctahedra. In the second Co site, Co(1) is bonded to eight equivalent Co(1) and four equivalent Ga(1) atoms to form CoGa4Co8 cuboctahedra that share corners with four equivalent Ga(1)Co12 cuboctahedra; corners with fourteen Co(1,1)Ga4Co8 cuboctahedra; edges with six equivalent Ga(1)Co12 cuboctahedra; edges with twelve equivalent Co(1)Ga4Co8 cuboctahedra; faces with four equivalent Ga(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ga4Co8 cuboctahedra. Ga(1) is bonded to twelve Co(1,1) atoms to form GaCo12 cuboctahedra that share corners with six equivalent Ga(1)Co12 cuboctahedra; corners with twelve Co(1,1)Ga4Co8 cuboctahedra; edges with eighteen Co(1,1)Ga4Co8 cuboctahedra; faces with eight equivalent Ga(1)Co12 cuboctahedra; and faces with twelve Co(1,1)Ga4Co8 cuboctahedra. is represented by the CIF card [CIF]
data_GaCo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.086
_cell_length_b   5.086
_cell_length_c   4.111
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   92.072
_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
  Ga  Ga0  1  0.333  0.667  0.750  1.0
  Ga  Ga1  1  0.667  0.333  0.250  1.0
  Co  Co2  1  0.166  0.331  0.250  1.0
  Co  Co3  1  0.669  0.834  0.250  1.0
  Co  Co4  1  0.166  0.834  0.250  1.0
  Co  Co5  1  0.834  0.669  0.750  1.0
  Co  Co6  1  0.331  0.166  0.750  1.0
  Co  Co7  1  0.834  0.166  0.750  1.0
[/CIF]
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