The structure described by Zr2CoAl3 crystallizes in the trigonal R-3m space group. Zr(1) is bonded in a 16-coordinate geometry to four equivalent Zr(1), three equivalent Co(1), and nine equivalent Al(1) atoms. Co(1) is bonded to six equivalent Zr(1) and six equivalent Al(1) atoms to form CoZr6Al6 cuboctahedra that share corners with six equivalent Co(1)Zr6Al6 cuboctahedra, corners with twelve equivalent Al(1)Zr6Al4Co2 cuboctahedra, edges with six equivalent Co(1)Zr6Al6 cuboctahedra, and faces with eighteen equivalent Al(1)Zr6Al4Co2 cuboctahedra. Al(1) is bonded to six equivalent Zr(1), two equivalent Co(1), and four equivalent Al(1) atoms to form AlZr6Al4Co2 cuboctahedra that share corners with four equivalent Co(1)Zr6Al6 cuboctahedra, corners with fourteen equivalent Al(1)Zr6Al4Co2 cuboctahedra, edges with six equivalent Al(1)Zr6Al4Co2 cuboctahedra, faces with six equivalent Co(1)Zr6Al6 cuboctahedra, and faces with twelve equivalent Al(1)Zr6Al4Co2 cuboctahedra. is represented by the CIF card [CIF]
data_Zr2Al3Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.177
_cell_length_b   5.177
_cell_length_c   5.177
_cell_angle_alpha   60.945
_cell_angle_beta   60.945
_cell_angle_gamma   60.945
_symmetry_Int_Tables_number   1
_cell_volume   100.183
_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
  Zr  Zr0  1  0.627  0.627  0.627  1.0
  Zr  Zr1  1  0.373  0.373  0.373  1.0
  Al  Al2  1  0.000  0.500  0.000  1.0
  Al  Al3  1  0.500  0.000  0.000  1.0
  Al  Al4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by Zr2CoAl3 crystallizes in the trigonal R-3m space group. Zr(1) is bonded in a 16-coordinate geometry to four equivalent Zr(1), three equivalent Co(1), and nine equivalent Al(1) atoms. Co(1) is bonded to six equivalent Zr(1) and six equivalent Al(1) atoms to form CoZr6Al6 cuboctahedra that share corners with six equivalent Co(1)Zr6Al6 cuboctahedra, corners with twelve equivalent Al(1)Zr6Al4Co2 cuboctahedra, edges with six equivalent Co(1)Zr6Al6 cuboctahedra, and faces with eighteen equivalent Al(1)Zr6Al4Co2 cuboctahedra. Al(1) is bonded to six equivalent Zr(1), two equivalent Co(1), and four equivalent Al(1) atoms to form AlZr6Al4Co2 cuboctahedra that share corners with four equivalent Co(1)Zr6Al6 cuboctahedra, corners with fourteen equivalent Al(1)Zr6Al4Co2 cuboctahedra, edges with six equivalent Al(1)Zr6Al4Co2 cuboctahedra, faces with six equivalent Co(1)Zr6Al6 cuboctahedra, and faces with twelve equivalent Al(1)Zr6Al4Co2 cuboctahedra. is represented by the CIF card [CIF]
data_Zr2Al3Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.177
_cell_length_b   5.177
_cell_length_c   5.177
_cell_angle_alpha   60.945
_cell_angle_beta   60.945
_cell_angle_gamma   60.945
_symmetry_Int_Tables_number   1
_cell_volume   100.183
_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
  Zr  Zr0  1  0.627  0.627  0.627  1.0
  Zr  Zr1  1  0.373  0.373  0.373  1.0
  Al  Al2  1  0.000  0.500  0.000  1.0
  Al  Al3  1  0.500  0.000  0.000  1.0
  Al  Al4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.000  0.000  0.000  1.0
[/CIF]
.