The compound described by Fe3CoBi4(AsO6)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Bi(2)O7 pentagonal bipyramid. In the second Fe site, Fe(2) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with two equivalent Bi(2)O7 pentagonal bipyramids. Co(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(12), one O(2), one O(4), one O(5), one O(9), and two equivalent O(10) atoms. In the second Bi site, Bi(2) is bonded to one O(1), one O(10), one O(11), one O(3), one O(6), and two equivalent O(9) atoms to form distorted BiO7 pentagonal bipyramids that share  a cornercorner with one As(2)O4 tetrahedra, corners with two equivalent As(1)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Bi(2)O7 pentagonal bipyramid. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(11), one O(2), one O(3), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent Bi(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 48-60°. In the second As site, As(2) is bonded to one O(1), one O(12), one O(4), and one O(8) atom to form AsO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Bi(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 47-62°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Bi(2), and one As(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Fe(1), one Bi(1), and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(2), one Bi(2), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(1), one Bi(1), and one As(2) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Fe(1), one Co(1), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Fe(1), one Fe(2), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Fe(1), one Co(1), and one As(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one As(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1) and two equivalent Bi(2) atoms. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Bi(2) and two equivalent Bi(1) atoms. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Bi(2) and one As(1) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Bi(1) and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe3CoBi4(AsO6)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.597
_cell_length_b   7.912
_cell_length_c   9.188
_cell_angle_alpha   107.887
_cell_angle_beta   95.034
_cell_angle_gamma   108.728
_symmetry_Int_Tables_number   1
_cell_volume   486.968
_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
  Fe  Fe0  1  0.246  0.242  0.993  1.0
  Fe  Fe1  1  0.754  0.758  0.007  1.0
  Fe  Fe2  1  0.500  0.000  0.000  1.0
  Co  Co3  1  0.000  0.500  0.000  1.0
  Bi  Bi4  1  0.180  0.502  0.386  1.0
  Bi  Bi5  1  0.682  0.003  0.377  1.0
  Bi  Bi6  1  0.820  0.498  0.614  1.0
  Bi  Bi7  1  0.318  0.997  0.623  1.0
  As  As8  1  0.196  0.001  0.233  1.0
  As  As9  1  0.697  0.492  0.225  1.0
  As  As10  1  0.804  0.999  0.767  1.0
  As  As11  1  0.303  0.508  0.775  1.0
  O  O12  1  0.676  0.689  0.192  1.0
  O  O13  1  0.188  0.202  0.195  1.0
  O  O14  1  0.324  0.311  0.808  1.0
  O  O15  1  0.812  0.798  0.805  1.0
  O  O16  1  0.414  0.986  0.202  1.0
  O  O17  1  0.919  0.483  0.198  1.0
  O  O18  1  0.586  0.014  0.798  1.0
  O  O19  1  0.081  0.517  0.802  1.0
  O  O20  1  0.781  0.494  0.911  1.0
  O  O21  1  0.262  0.996  0.883  1.0
  O  O22  1  0.219  0.506  0.089  1.0
  O  O23  1  0.738  0.004  0.117  1.0
  O  O24  1  0.969  0.197  0.913  1.0
  O  O25  1  0.470  0.709  0.918  1.0
  O  O26  1  0.031  0.803  0.087  1.0
  O  O27  1  0.530  0.291  0.082  1.0
  O  O28  1  0.585  0.196  0.556  1.0
  O  O29  1  0.080  0.695  0.556  1.0
  O  O30  1  0.415  0.804  0.444  1.0
  O  O31  1  0.920  0.305  0.444  1.0
  O  O32  1  0.856  0.983  0.590  1.0
  O  O33  1  0.354  0.494  0.597  1.0
  O  O34  1  0.144  0.017  0.410  1.0
  O  O35  1  0.646  0.506  0.403  1.0
[/CIF]
.
The compound described by Fe3CoBi4(AsO6)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Bi(2)O7 pentagonal bipyramid. In the second Fe site, Fe(2) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with two equivalent Bi(2)O7 pentagonal bipyramids. Co(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(12), one O(2), one O(4), one O(5), one O(9), and two equivalent O(10) atoms. In the second Bi site, Bi(2) is bonded to one O(1), one O(10), one O(11), one O(3), one O(6), and two equivalent O(9) atoms to form distorted BiO7 pentagonal bipyramids that share  a cornercorner with one As(2)O4 tetrahedra, corners with two equivalent As(1)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Bi(2)O7 pentagonal bipyramid. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(11), one O(2), one O(3), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent Bi(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 48-60°. In the second As site, As(2) is bonded to one O(1), one O(12), one O(4), and one O(8) atom to form AsO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Bi(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 47-62°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Bi(2), and one As(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Fe(1), one Bi(1), and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(2), one Bi(2), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(1), one Bi(1), and one As(2) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Fe(1), one Co(1), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Fe(1), one Fe(2), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Fe(1), one Co(1), and one As(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one As(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1) and two equivalent Bi(2) atoms. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Bi(2) and two equivalent Bi(1) atoms. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Bi(2) and one As(1) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Bi(1) and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe3CoBi4(AsO6)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.597
_cell_length_b   7.912
_cell_length_c   9.188
_cell_angle_alpha   107.887
_cell_angle_beta   95.034
_cell_angle_gamma   108.728
_symmetry_Int_Tables_number   1
_cell_volume   486.968
_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
  Fe  Fe0  1  0.246  0.242  0.993  1.0
  Fe  Fe1  1  0.754  0.758  0.007  1.0
  Fe  Fe2  1  0.500  0.000  0.000  1.0
  Co  Co3  1  0.000  0.500  0.000  1.0
  Bi  Bi4  1  0.180  0.502  0.386  1.0
  Bi  Bi5  1  0.682  0.003  0.377  1.0
  Bi  Bi6  1  0.820  0.498  0.614  1.0
  Bi  Bi7  1  0.318  0.997  0.623  1.0
  As  As8  1  0.196  0.001  0.233  1.0
  As  As9  1  0.697  0.492  0.225  1.0
  As  As10  1  0.804  0.999  0.767  1.0
  As  As11  1  0.303  0.508  0.775  1.0
  O  O12  1  0.676  0.689  0.192  1.0
  O  O13  1  0.188  0.202  0.195  1.0
  O  O14  1  0.324  0.311  0.808  1.0
  O  O15  1  0.812  0.798  0.805  1.0
  O  O16  1  0.414  0.986  0.202  1.0
  O  O17  1  0.919  0.483  0.198  1.0
  O  O18  1  0.586  0.014  0.798  1.0
  O  O19  1  0.081  0.517  0.802  1.0
  O  O20  1  0.781  0.494  0.911  1.0
  O  O21  1  0.262  0.996  0.883  1.0
  O  O22  1  0.219  0.506  0.089  1.0
  O  O23  1  0.738  0.004  0.117  1.0
  O  O24  1  0.969  0.197  0.913  1.0
  O  O25  1  0.470  0.709  0.918  1.0
  O  O26  1  0.031  0.803  0.087  1.0
  O  O27  1  0.530  0.291  0.082  1.0
  O  O28  1  0.585  0.196  0.556  1.0
  O  O29  1  0.080  0.695  0.556  1.0
  O  O30  1  0.415  0.804  0.444  1.0
  O  O31  1  0.920  0.305  0.444  1.0
  O  O32  1  0.856  0.983  0.590  1.0
  O  O33  1  0.354  0.494  0.597  1.0
  O  O34  1  0.144  0.017  0.410  1.0
  O  O35  1  0.646  0.506  0.403  1.0
[/CIF]
.