The compound described by Pr2Co15Ga2 crystallizes in the trigonal R-3m space group. Pr(1) is bonded in a 19-coordinate geometry to three equivalent Co(1), 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 two equivalent Pr(1), four equivalent Co(2), four equivalent Co(3), and two equivalent Ga(1) atoms to form distorted CoPr2Ga2Co8 cuboctahedra that share corners with four equivalent Co(1)Pr2Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Pr3GaCo8 cuboctahedra, edges with six equivalent Co(3)Pr3GaCo8 cuboctahedra, faces with four equivalent Co(1)Pr2Ga2Co8 cuboctahedra, and faces with six equivalent Co(3)Pr3GaCo8 cuboctahedra. In the second Co site, Co(2) is bonded in a distorted q6 geometry to two equivalent Pr(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 Pr(1), two equivalent Co(1), two equivalent Co(3), four equivalent Co(2), and one Ga(1) atom to form CoPr3GaCo8 cuboctahedra that share corners with five equivalent Co(1)Pr2Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Pr3GaCo8 cuboctahedra, edges with three equivalent Co(1)Pr2Ga2Co8 cuboctahedra, edges with five equivalent Co(3)Pr3GaCo8 cuboctahedra, faces with three equivalent Co(1)Pr2Ga2Co8 cuboctahedra, and faces with seven equivalent Co(3)Pr3GaCo8 cuboctahedra. Ga(1) is bonded in a 14-coordinate geometry to one Pr(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_Pr2Ga2Co15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.382
_cell_length_b   6.382
_cell_length_c   6.382
_cell_angle_alpha   83.022
_cell_angle_beta   83.022
_cell_angle_gamma   83.022
_symmetry_Int_Tables_number   1
_cell_volume   254.594
_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
  Pr  Pr0  1  0.649  0.649  0.649  1.0
  Pr  Pr1  1  0.351  0.351  0.351  1.0
  Ga  Ga2  1  0.894  0.894  0.894  1.0
  Ga  Ga3  1  0.106  0.106  0.106  1.0
  Co  Co4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.500  0.000  0.000  1.0
  Co  Co6  1  0.000  0.500  0.000  1.0
  Co  Co7  1  0.714  0.286  0.000  1.0
  Co  Co8  1  0.000  0.714  0.286  1.0
  Co  Co9  1  0.286  0.000  0.714  1.0
  Co  Co10  1  0.000  0.286  0.714  1.0
  Co  Co11  1  0.714  0.000  0.286  1.0
  Co  Co12  1  0.286  0.714  0.000  1.0
  Co  Co13  1  0.348  0.348  0.849  1.0
  Co  Co14  1  0.849  0.348  0.348  1.0
  Co  Co15  1  0.348  0.849  0.348  1.0
  Co  Co16  1  0.652  0.652  0.151  1.0
  Co  Co17  1  0.151  0.652  0.652  1.0
  Co  Co18  1  0.652  0.151  0.652  1.0
[/CIF]
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The compound described by Pr2Co15Ga2 crystallizes in the trigonal R-3m space group. Pr(1) is bonded in a 19-coordinate geometry to three equivalent Co(1), 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 two equivalent Pr(1), four equivalent Co(2), four equivalent Co(3), and two equivalent Ga(1) atoms to form distorted CoPr2Ga2Co8 cuboctahedra that share corners with four equivalent Co(1)Pr2Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Pr3GaCo8 cuboctahedra, edges with six equivalent Co(3)Pr3GaCo8 cuboctahedra, faces with four equivalent Co(1)Pr2Ga2Co8 cuboctahedra, and faces with six equivalent Co(3)Pr3GaCo8 cuboctahedra. In the second Co site, Co(2) is bonded in a distorted q6 geometry to two equivalent Pr(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 Pr(1), two equivalent Co(1), two equivalent Co(3), four equivalent Co(2), and one Ga(1) atom to form CoPr3GaCo8 cuboctahedra that share corners with five equivalent Co(1)Pr2Ga2Co8 cuboctahedra, corners with ten equivalent Co(3)Pr3GaCo8 cuboctahedra, edges with three equivalent Co(1)Pr2Ga2Co8 cuboctahedra, edges with five equivalent Co(3)Pr3GaCo8 cuboctahedra, faces with three equivalent Co(1)Pr2Ga2Co8 cuboctahedra, and faces with seven equivalent Co(3)Pr3GaCo8 cuboctahedra. Ga(1) is bonded in a 14-coordinate geometry to one Pr(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_Pr2Ga2Co15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.382
_cell_length_b   6.382
_cell_length_c   6.382
_cell_angle_alpha   83.022
_cell_angle_beta   83.022
_cell_angle_gamma   83.022
_symmetry_Int_Tables_number   1
_cell_volume   254.594
_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
  Pr  Pr0  1  0.649  0.649  0.649  1.0
  Pr  Pr1  1  0.351  0.351  0.351  1.0
  Ga  Ga2  1  0.894  0.894  0.894  1.0
  Ga  Ga3  1  0.106  0.106  0.106  1.0
  Co  Co4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.500  0.000  0.000  1.0
  Co  Co6  1  0.000  0.500  0.000  1.0
  Co  Co7  1  0.714  0.286  0.000  1.0
  Co  Co8  1  0.000  0.714  0.286  1.0
  Co  Co9  1  0.286  0.000  0.714  1.0
  Co  Co10  1  0.000  0.286  0.714  1.0
  Co  Co11  1  0.714  0.000  0.286  1.0
  Co  Co12  1  0.286  0.714  0.000  1.0
  Co  Co13  1  0.348  0.348  0.849  1.0
  Co  Co14  1  0.849  0.348  0.348  1.0
  Co  Co15  1  0.348  0.849  0.348  1.0
  Co  Co16  1  0.652  0.652  0.151  1.0
  Co  Co17  1  0.151  0.652  0.652  1.0
  Co  Co18  1  0.652  0.151  0.652  1.0
[/CIF]
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