The crystal structure described by Co3(PO4)2 crystallizes in the triclinic P-1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form distorted CoO6 octahedra that share corners with two equivalent Co(4)O6 octahedra, corners with four equivalent Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. In the second Co site, Co(2) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form distorted CoO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the third Co site, Co(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with four equivalent Co(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the fourth Co site, Co(4) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-64°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-57°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with three equivalent Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(4), and one P(2) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(3), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(3), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(2), one Co(4), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co3(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.794
_cell_length_b   6.013
_cell_length_c   10.348
_cell_angle_alpha   90.808
_cell_angle_beta   89.536
_cell_angle_gamma   90.286
_symmetry_Int_Tables_number   1
_cell_volume   298.249
_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
  Co  Co0  1  0.524  0.236  0.775  1.0
  Co  Co1  1  0.980  0.235  0.277  1.0
  Co  Co2  1  0.020  0.765  0.723  1.0
  Co  Co3  1  0.476  0.764  0.225  1.0
  Co  Co4  1  0.500  0.500  0.500  1.0
  Co  Co5  1  0.000  0.500  0.000  1.0
  P  P6  1  0.080  0.257  0.595  1.0
  P  P7  1  0.424  0.258  0.097  1.0
  P  P8  1  0.576  0.742  0.903  1.0
  P  P9  1  0.920  0.743  0.405  1.0
  O  O10  1  0.731  0.533  0.839  1.0
  O  O11  1  0.238  0.472  0.654  1.0
  O  O12  1  0.269  0.467  0.161  1.0
  O  O13  1  0.762  0.528  0.346  1.0
  O  O14  1  0.191  0.250  0.454  1.0
  O  O15  1  0.684  0.746  0.044  1.0
  O  O16  1  0.316  0.254  0.956  1.0
  O  O17  1  0.809  0.750  0.546  1.0
  O  O18  1  0.240  0.725  0.396  1.0
  O  O19  1  0.760  0.275  0.604  1.0
  O  O20  1  0.255  0.724  0.895  1.0
  O  O21  1  0.745  0.276  0.105  1.0
  O  O22  1  0.691  0.938  0.822  1.0
  O  O23  1  0.807  0.933  0.321  1.0
  O  O24  1  0.309  0.062  0.178  1.0
  O  O25  1  0.193  0.067  0.679  1.0
[/CIF]
.
The crystal structure described by Co3(PO4)2 crystallizes in the triclinic P-1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form distorted CoO6 octahedra that share corners with two equivalent Co(4)O6 octahedra, corners with four equivalent Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. In the second Co site, Co(2) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form distorted CoO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the third Co site, Co(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with four equivalent Co(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the fourth Co site, Co(4) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-64°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-57°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with three equivalent Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(4), and one P(2) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(3), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(3), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(2), one Co(4), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co3(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.794
_cell_length_b   6.013
_cell_length_c   10.348
_cell_angle_alpha   90.808
_cell_angle_beta   89.536
_cell_angle_gamma   90.286
_symmetry_Int_Tables_number   1
_cell_volume   298.249
_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
  Co  Co0  1  0.524  0.236  0.775  1.0
  Co  Co1  1  0.980  0.235  0.277  1.0
  Co  Co2  1  0.020  0.765  0.723  1.0
  Co  Co3  1  0.476  0.764  0.225  1.0
  Co  Co4  1  0.500  0.500  0.500  1.0
  Co  Co5  1  0.000  0.500  0.000  1.0
  P  P6  1  0.080  0.257  0.595  1.0
  P  P7  1  0.424  0.258  0.097  1.0
  P  P8  1  0.576  0.742  0.903  1.0
  P  P9  1  0.920  0.743  0.405  1.0
  O  O10  1  0.731  0.533  0.839  1.0
  O  O11  1  0.238  0.472  0.654  1.0
  O  O12  1  0.269  0.467  0.161  1.0
  O  O13  1  0.762  0.528  0.346  1.0
  O  O14  1  0.191  0.250  0.454  1.0
  O  O15  1  0.684  0.746  0.044  1.0
  O  O16  1  0.316  0.254  0.956  1.0
  O  O17  1  0.809  0.750  0.546  1.0
  O  O18  1  0.240  0.725  0.396  1.0
  O  O19  1  0.760  0.275  0.604  1.0
  O  O20  1  0.255  0.724  0.895  1.0
  O  O21  1  0.745  0.276  0.105  1.0
  O  O22  1  0.691  0.938  0.822  1.0
  O  O23  1  0.807  0.933  0.321  1.0
  O  O24  1  0.309  0.062  0.178  1.0
  O  O25  1  0.193  0.067  0.679  1.0
[/CIF]
.