The structure described by Co5As2 crystallizes in the hexagonal P6_3cm space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to one As(1) and three equivalent As(3) atoms. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to one As(2) and three equivalent As(3) atoms. In the third Co site, Co(3) is bonded in a 3-coordinate geometry to one As(1) and two equivalent As(3) atoms. In the fourth Co site, Co(4) is bonded in a 4-coordinate geometry to one As(1), one As(3), and two equivalent As(2) atoms. In the fifth Co site, Co(5) is bonded in a 4-coordinate geometry to one As(1), one As(3), and two equivalent As(2) atoms. In the sixth Co site, Co(6) is bonded in a 1-coordinate geometry to two equivalent As(2) and three equivalent As(3) atoms. There are three inequivalent As sites. In the first As site, As(2) is bonded in a 10-coordinate geometry to one Co(2), three equivalent Co(4), three equivalent Co(5), and three equivalent Co(6) atoms. In the second As site, As(3) is bonded in a 10-coordinate geometry to one Co(1), one Co(4), one Co(5), two equivalent Co(2), two equivalent Co(3), and three equivalent Co(6) atoms. In the third As site, As(1) is bonded in a 10-coordinate geometry to one Co(1), three equivalent Co(3), three equivalent Co(4), and three equivalent Co(5) atoms. is represented by the CIF card [CIF]
data_Co5As2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.787
_cell_length_b   6.787
_cell_length_c   12.379
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   493.810
_cell_formula_units_Z   6
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
  Co  Co0  1  0.000  0.000  0.947  1.0
  Co  Co1  1  0.000  0.000  0.447  1.0
  Co  Co2  1  0.333  0.667  0.086  1.0
  Co  Co3  1  0.667  0.333  0.586  1.0
  Co  Co4  1  0.333  0.667  0.586  1.0
  Co  Co5  1  0.667  0.333  0.086  1.0
  Co  Co6  1  0.271  0.000  0.117  1.0
  Co  Co7  1  0.271  0.271  0.617  1.0
  Co  Co8  1  0.000  0.729  0.617  1.0
  Co  Co9  1  0.000  0.271  0.117  1.0
  Co  Co10  1  0.729  0.729  0.117  1.0
  Co  Co11  1  0.729  0.000  0.617  1.0
  Co  Co12  1  0.626  0.000  0.212  1.0
  Co  Co13  1  0.626  0.626  0.712  1.0
  Co  Co14  1  0.000  0.374  0.712  1.0
  Co  Co15  1  0.000  0.626  0.212  1.0
  Co  Co16  1  0.374  0.374  0.212  1.0
  Co  Co17  1  0.374  0.000  0.712  1.0
  Co  Co18  1  0.307  0.000  0.322  1.0
  Co  Co19  1  0.307  0.307  0.822  1.0
  Co  Co20  1  0.000  0.693  0.822  1.0
  Co  Co21  1  0.000  0.307  0.322  1.0
  Co  Co22  1  0.693  0.693  0.322  1.0
  Co  Co23  1  0.693  0.000  0.822  1.0
  Co  Co24  1  0.630  0.000  0.423  1.0
  Co  Co25  1  0.630  0.630  0.923  1.0
  Co  Co26  1  0.000  0.370  0.923  1.0
  Co  Co27  1  0.000  0.630  0.423  1.0
  Co  Co28  1  0.370  0.370  0.423  1.0
  Co  Co29  1  0.370  0.000  0.923  1.0
  As  As30  1  0.000  0.000  0.245  1.0
  As  As31  1  0.000  0.000  0.745  1.0
  As  As32  1  0.333  0.667  0.290  1.0
  As  As33  1  0.667  0.333  0.790  1.0
  As  As34  1  0.333  0.667  0.790  1.0
  As  As35  1  0.667  0.333  0.290  1.0
  As  As36  1  0.671  0.000  0.016  1.0
  As  As37  1  0.671  0.671  0.516  1.0
  As  As38  1  0.000  0.329  0.516  1.0
  As  As39  1  0.000  0.671  0.016  1.0
  As  As40  1  0.329  0.329  0.016  1.0
  As  As41  1  0.329  0.000  0.516  1.0
[/CIF]
.
The structure described by Co5As2 crystallizes in the hexagonal P6_3cm space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to one As(1) and three equivalent As(3) atoms. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to one As(2) and three equivalent As(3) atoms. In the third Co site, Co(3) is bonded in a 3-coordinate geometry to one As(1) and two equivalent As(3) atoms. In the fourth Co site, Co(4) is bonded in a 4-coordinate geometry to one As(1), one As(3), and two equivalent As(2) atoms. In the fifth Co site, Co(5) is bonded in a 4-coordinate geometry to one As(1), one As(3), and two equivalent As(2) atoms. In the sixth Co site, Co(6) is bonded in a 1-coordinate geometry to two equivalent As(2) and three equivalent As(3) atoms. There are three inequivalent As sites. In the first As site, As(2) is bonded in a 10-coordinate geometry to one Co(2), three equivalent Co(4), three equivalent Co(5), and three equivalent Co(6) atoms. In the second As site, As(3) is bonded in a 10-coordinate geometry to one Co(1), one Co(4), one Co(5), two equivalent Co(2), two equivalent Co(3), and three equivalent Co(6) atoms. In the third As site, As(1) is bonded in a 10-coordinate geometry to one Co(1), three equivalent Co(3), three equivalent Co(4), and three equivalent Co(5) atoms. is represented by the CIF card [CIF]
data_Co5As2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.787
_cell_length_b   6.787
_cell_length_c   12.379
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   493.810
_cell_formula_units_Z   6
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
  Co  Co0  1  0.000  0.000  0.947  1.0
  Co  Co1  1  0.000  0.000  0.447  1.0
  Co  Co2  1  0.333  0.667  0.086  1.0
  Co  Co3  1  0.667  0.333  0.586  1.0
  Co  Co4  1  0.333  0.667  0.586  1.0
  Co  Co5  1  0.667  0.333  0.086  1.0
  Co  Co6  1  0.271  0.000  0.117  1.0
  Co  Co7  1  0.271  0.271  0.617  1.0
  Co  Co8  1  0.000  0.729  0.617  1.0
  Co  Co9  1  0.000  0.271  0.117  1.0
  Co  Co10  1  0.729  0.729  0.117  1.0
  Co  Co11  1  0.729  0.000  0.617  1.0
  Co  Co12  1  0.626  0.000  0.212  1.0
  Co  Co13  1  0.626  0.626  0.712  1.0
  Co  Co14  1  0.000  0.374  0.712  1.0
  Co  Co15  1  0.000  0.626  0.212  1.0
  Co  Co16  1  0.374  0.374  0.212  1.0
  Co  Co17  1  0.374  0.000  0.712  1.0
  Co  Co18  1  0.307  0.000  0.322  1.0
  Co  Co19  1  0.307  0.307  0.822  1.0
  Co  Co20  1  0.000  0.693  0.822  1.0
  Co  Co21  1  0.000  0.307  0.322  1.0
  Co  Co22  1  0.693  0.693  0.322  1.0
  Co  Co23  1  0.693  0.000  0.822  1.0
  Co  Co24  1  0.630  0.000  0.423  1.0
  Co  Co25  1  0.630  0.630  0.923  1.0
  Co  Co26  1  0.000  0.370  0.923  1.0
  Co  Co27  1  0.000  0.630  0.423  1.0
  Co  Co28  1  0.370  0.370  0.423  1.0
  Co  Co29  1  0.370  0.000  0.923  1.0
  As  As30  1  0.000  0.000  0.245  1.0
  As  As31  1  0.000  0.000  0.745  1.0
  As  As32  1  0.333  0.667  0.290  1.0
  As  As33  1  0.667  0.333  0.790  1.0
  As  As34  1  0.333  0.667  0.790  1.0
  As  As35  1  0.667  0.333  0.290  1.0
  As  As36  1  0.671  0.000  0.016  1.0
  As  As37  1  0.671  0.671  0.516  1.0
  As  As38  1  0.000  0.329  0.516  1.0
  As  As39  1  0.000  0.671  0.016  1.0
  As  As40  1  0.329  0.329  0.016  1.0
  As  As41  1  0.329  0.000  0.516  1.0
[/CIF]
.