The material described by Ce2Co15Ga2 crystallizes in the trigonal R-3m space group. Ce(1) is bonded in a 16-coordinate geometry to six equivalent Co(2), nine equivalent Co(3), and one Ga(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent Co(2), four equivalent Co(3), and two equivalent Ga(1) atoms to form distorted CoGa2Co8 cuboctahedra that share corners with four equivalent Co(1)Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Ce3GaCo8 cuboctahedra, edges with two equivalent Co(3)Ce3GaCo8 cuboctahedra, edges with four equivalent Co(1)Ga2Co8 cuboctahedra, and faces with four equivalent Co(3)Ce3GaCo8 cuboctahedra. In the second Co site, Co(2) is bonded in a distorted q6 geometry to two equivalent Ce(1), two equivalent Co(1), two equivalent Co(2), four equivalent Co(3), and two equivalent Ga(1) atoms. In the third Co site, Co(3) is bonded to three equivalent Ce(1), two equivalent Co(1), two equivalent Co(3), four equivalent Co(2), and one Ga(1) atom to form CoCe3GaCo8 cuboctahedra that share corners with five equivalent Co(1)Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Ce3GaCo8 cuboctahedra,  an edgeedge with one Co(1)Ga2Co8 cuboctahedra, edges with five equivalent Co(3)Ce3GaCo8 cuboctahedra, faces with two equivalent Co(1)Ga2Co8 cuboctahedra, and faces with seven equivalent Co(3)Ce3GaCo8 cuboctahedra. Ga(1) is bonded in a 14-coordinate geometry to one Ce(1), three equivalent Co(1), three equivalent Co(3), six equivalent Co(2), and one Ga(1) atom. is represented by the CIF file [CIF]
data_Ce2Ga2Co15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.358
_cell_length_b   6.358
_cell_length_c   6.358
_cell_angle_alpha   82.809
_cell_angle_beta   82.809
_cell_angle_gamma   82.809
_symmetry_Int_Tables_number   1
_cell_volume   251.468
_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
  Ce  Ce0  1  0.648  0.648  0.648  1.0
  Ce  Ce1  1  0.352  0.352  0.352  1.0
  Ga  Ga2  1  0.895  0.895  0.895  1.0
  Ga  Ga3  1  0.105  0.105  0.105  1.0
  Co  Co4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.000  0.500  0.000  1.0
  Co  Co6  1  0.500  0.000  0.000  1.0
  Co  Co7  1  0.289  0.711  0.000  1.0
  Co  Co8  1  0.711  0.000  0.289  1.0
  Co  Co9  1  0.000  0.289  0.711  1.0
  Co  Co10  1  0.289  0.000  0.711  1.0
  Co  Co11  1  0.000  0.711  0.289  1.0
  Co  Co12  1  0.711  0.289  0.000  1.0
  Co  Co13  1  0.350  0.350  0.851  1.0
  Co  Co14  1  0.350  0.851  0.350  1.0
  Co  Co15  1  0.851  0.350  0.350  1.0
  Co  Co16  1  0.650  0.650  0.149  1.0
  Co  Co17  1  0.650  0.149  0.650  1.0
  Co  Co18  1  0.149  0.650  0.650  1.0
[/CIF]
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The material described by Ce2Co15Ga2 crystallizes in the trigonal R-3m space group. Ce(1) is bonded in a 16-coordinate geometry to six equivalent Co(2), nine equivalent Co(3), and one Ga(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent Co(2), four equivalent Co(3), and two equivalent Ga(1) atoms to form distorted CoGa2Co8 cuboctahedra that share corners with four equivalent Co(1)Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Ce3GaCo8 cuboctahedra, edges with two equivalent Co(3)Ce3GaCo8 cuboctahedra, edges with four equivalent Co(1)Ga2Co8 cuboctahedra, and faces with four equivalent Co(3)Ce3GaCo8 cuboctahedra. In the second Co site, Co(2) is bonded in a distorted q6 geometry to two equivalent Ce(1), two equivalent Co(1), two equivalent Co(2), four equivalent Co(3), and two equivalent Ga(1) atoms. In the third Co site, Co(3) is bonded to three equivalent Ce(1), two equivalent Co(1), two equivalent Co(3), four equivalent Co(2), and one Ga(1) atom to form CoCe3GaCo8 cuboctahedra that share corners with five equivalent Co(1)Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Ce3GaCo8 cuboctahedra,  an edgeedge with one Co(1)Ga2Co8 cuboctahedra, edges with five equivalent Co(3)Ce3GaCo8 cuboctahedra, faces with two equivalent Co(1)Ga2Co8 cuboctahedra, and faces with seven equivalent Co(3)Ce3GaCo8 cuboctahedra. Ga(1) is bonded in a 14-coordinate geometry to one Ce(1), three equivalent Co(1), three equivalent Co(3), six equivalent Co(2), and one Ga(1) atom. is represented by the CIF file [CIF]
data_Ce2Ga2Co15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.358
_cell_length_b   6.358
_cell_length_c   6.358
_cell_angle_alpha   82.809
_cell_angle_beta   82.809
_cell_angle_gamma   82.809
_symmetry_Int_Tables_number   1
_cell_volume   251.468
_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
  Ce  Ce0  1  0.648  0.648  0.648  1.0
  Ce  Ce1  1  0.352  0.352  0.352  1.0
  Ga  Ga2  1  0.895  0.895  0.895  1.0
  Ga  Ga3  1  0.105  0.105  0.105  1.0
  Co  Co4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.000  0.500  0.000  1.0
  Co  Co6  1  0.500  0.000  0.000  1.0
  Co  Co7  1  0.289  0.711  0.000  1.0
  Co  Co8  1  0.711  0.000  0.289  1.0
  Co  Co9  1  0.000  0.289  0.711  1.0
  Co  Co10  1  0.289  0.000  0.711  1.0
  Co  Co11  1  0.000  0.711  0.289  1.0
  Co  Co12  1  0.711  0.289  0.000  1.0
  Co  Co13  1  0.350  0.350  0.851  1.0
  Co  Co14  1  0.350  0.851  0.350  1.0
  Co  Co15  1  0.851  0.350  0.350  1.0
  Co  Co16  1  0.650  0.650  0.149  1.0
  Co  Co17  1  0.650  0.149  0.650  1.0
  Co  Co18  1  0.149  0.650  0.650  1.0
[/CIF]
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