The compound described by CrFe3Co2(PO4)6 crystallizes in the trigonal R3 space group. Cr(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form CrO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(1)O6 octahedra. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent O(4) and three equivalent O(8) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(1)O6 octahedra. In the third Fe site, Fe(3) is bonded to three equivalent O(1) and three equivalent O(7) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(2)O6 octahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to three equivalent O(2) and three equivalent O(6) atoms to form distorted CoO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Cr(1)O6 octahedra, and  a faceface with one Fe(2)O6 octahedra. In the second Co site, Co(2) is bonded to three equivalent O(4) and three equivalent O(7) atoms to form distorted CoO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Fe(1)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, and  a cornercorner with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-53°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, and  a cornercorner with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-52°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Fe(2), one Co(1), and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Fe(1), one Co(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cr(1), one Co(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Fe(3), one Co(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrFe3Co2(PO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.414
_cell_length_b   8.414
_cell_length_c   8.414
_cell_angle_alpha   61.824
_cell_angle_beta   61.824
_cell_angle_gamma   61.824
_symmetry_Int_Tables_number   1
_cell_volume   438.417
_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
  Cr  Cr0  1  0.858  0.858  0.858  1.0
  Fe  Fe1  1  0.355  0.355  0.355  1.0
  Fe  Fe2  1  0.145  0.145  0.145  1.0
  Fe  Fe3  1  0.645  0.645  0.645  1.0
  Co  Co4  1  0.002  0.002  0.002  1.0
  Co  Co5  1  0.500  0.500  0.500  1.0
  P  P6  1  0.750  0.045  0.456  1.0
  P  P7  1  0.045  0.456  0.750  1.0
  P  P8  1  0.456  0.750  0.045  1.0
  P  P9  1  0.547  0.249  0.952  1.0
  P  P10  1  0.952  0.547  0.249  1.0
  P  P11  1  0.249  0.952  0.547  1.0
  O  O12  1  0.891  0.497  0.677  1.0
  O  O13  1  0.497  0.677  0.891  1.0
  O  O14  1  0.677  0.891  0.497  1.0
  O  O15  1  0.906  0.060  0.254  1.0
  O  O16  1  0.821  0.003  0.613  1.0
  O  O17  1  0.595  0.248  0.441  1.0
  O  O18  1  0.060  0.254  0.906  1.0
  O  O19  1  0.248  0.441  0.595  1.0
  O  O20  1  0.392  0.176  0.995  1.0
  O  O21  1  0.441  0.595  0.248  1.0
  O  O22  1  0.749  0.092  0.937  1.0
  O  O23  1  0.995  0.392  0.176  1.0
  O  O24  1  0.003  0.613  0.821  1.0
  O  O25  1  0.254  0.906  0.060  1.0
  O  O26  1  0.562  0.404  0.750  1.0
  O  O27  1  0.613  0.821  0.003  1.0
  O  O28  1  0.750  0.562  0.404  1.0
  O  O29  1  0.937  0.749  0.092  1.0
  O  O30  1  0.404  0.750  0.562  1.0
  O  O31  1  0.176  0.995  0.392  1.0
  O  O32  1  0.092  0.937  0.749  1.0
  O  O33  1  0.319  0.108  0.508  1.0
  O  O34  1  0.508  0.319  0.108  1.0
  O  O35  1  0.108  0.508  0.319  1.0
[/CIF]
.
The compound described by CrFe3Co2(PO4)6 crystallizes in the trigonal R3 space group. Cr(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form CrO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(1)O6 octahedra. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent O(4) and three equivalent O(8) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(1)O6 octahedra. In the third Fe site, Fe(3) is bonded to three equivalent O(1) and three equivalent O(7) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Co(2)O6 octahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to three equivalent O(2) and three equivalent O(6) atoms to form distorted CoO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Cr(1)O6 octahedra, and  a faceface with one Fe(2)O6 octahedra. In the second Co site, Co(2) is bonded to three equivalent O(4) and three equivalent O(7) atoms to form distorted CoO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Fe(1)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, and  a cornercorner with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-53°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, and  a cornercorner with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-52°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Fe(2), one Co(1), and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Fe(1), one Co(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cr(1), one Co(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Fe(3), one Co(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrFe3Co2(PO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.414
_cell_length_b   8.414
_cell_length_c   8.414
_cell_angle_alpha   61.824
_cell_angle_beta   61.824
_cell_angle_gamma   61.824
_symmetry_Int_Tables_number   1
_cell_volume   438.417
_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
  Cr  Cr0  1  0.858  0.858  0.858  1.0
  Fe  Fe1  1  0.355  0.355  0.355  1.0
  Fe  Fe2  1  0.145  0.145  0.145  1.0
  Fe  Fe3  1  0.645  0.645  0.645  1.0
  Co  Co4  1  0.002  0.002  0.002  1.0
  Co  Co5  1  0.500  0.500  0.500  1.0
  P  P6  1  0.750  0.045  0.456  1.0
  P  P7  1  0.045  0.456  0.750  1.0
  P  P8  1  0.456  0.750  0.045  1.0
  P  P9  1  0.547  0.249  0.952  1.0
  P  P10  1  0.952  0.547  0.249  1.0
  P  P11  1  0.249  0.952  0.547  1.0
  O  O12  1  0.891  0.497  0.677  1.0
  O  O13  1  0.497  0.677  0.891  1.0
  O  O14  1  0.677  0.891  0.497  1.0
  O  O15  1  0.906  0.060  0.254  1.0
  O  O16  1  0.821  0.003  0.613  1.0
  O  O17  1  0.595  0.248  0.441  1.0
  O  O18  1  0.060  0.254  0.906  1.0
  O  O19  1  0.248  0.441  0.595  1.0
  O  O20  1  0.392  0.176  0.995  1.0
  O  O21  1  0.441  0.595  0.248  1.0
  O  O22  1  0.749  0.092  0.937  1.0
  O  O23  1  0.995  0.392  0.176  1.0
  O  O24  1  0.003  0.613  0.821  1.0
  O  O25  1  0.254  0.906  0.060  1.0
  O  O26  1  0.562  0.404  0.750  1.0
  O  O27  1  0.613  0.821  0.003  1.0
  O  O28  1  0.750  0.562  0.404  1.0
  O  O29  1  0.937  0.749  0.092  1.0
  O  O30  1  0.404  0.750  0.562  1.0
  O  O31  1  0.176  0.995  0.392  1.0
  O  O32  1  0.092  0.937  0.749  1.0
  O  O33  1  0.319  0.108  0.508  1.0
  O  O34  1  0.508  0.319  0.108  1.0
  O  O35  1  0.108  0.508  0.319  1.0
[/CIF]
.