The structure described by V4FeCoO12 crystallizes in the triclinic P1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(11), one O(5), one O(7), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent V(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 32-58°. In the second V site, V(2) is bonded to one O(10), one O(12), one O(6), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent V(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 32-57°. In the third V site, V(3) is bonded to one O(1), one O(3), one O(7), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-59°. In the fourth V site, V(4) is bonded to one O(10), one O(2), one O(4), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-60°. Fe(1) is bonded to one O(1), one O(11), one O(12), one O(2), one O(5), and one O(6) atom to form FeO6 octahedra that share  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and edges with two equivalent Co(1)O6 octahedra. Co(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(3), one Fe(1), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(4), one Fe(1), and one Co(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(3) and one Co(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(4) and one Co(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one V(1), one Fe(1), and one Co(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(2), one Fe(1), and one Co(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(1) and one Fe(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one V(2) and one Fe(1) atom. is represented by the CIF file [CIF]
data_V4FeCoO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.917
_cell_length_b   6.865
_cell_length_c   6.829
_cell_angle_alpha   96.375
_cell_angle_beta   74.580
_cell_angle_gamma   105.467
_symmetry_Int_Tables_number   1
_cell_volume   257.511
_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
  V  V0  1  0.256  0.386  0.794  1.0
  V  V1  1  0.244  0.793  0.386  1.0
  V  V2  1  0.760  0.209  0.612  1.0
  V  V3  1  0.741  0.612  0.207  1.0
  Fe  Fe4  1  0.249  0.913  0.914  1.0
  Co  Co5  1  0.750  0.088  0.087  1.0
  O  O6  1  0.647  0.042  0.804  1.0
  O  O7  1  0.853  0.804  0.040  1.0
  O  O8  1  0.777  0.090  0.381  1.0
  O  O9  1  0.722  0.382  0.090  1.0
  O  O10  1  0.132  0.194  0.962  1.0
  O  O11  1  0.367  0.960  0.192  1.0
  O  O12  1  0.552  0.367  0.650  1.0
  O  O13  1  0.949  0.650  0.367  1.0
  O  O14  1  0.056  0.354  0.630  1.0
  O  O15  1  0.444  0.630  0.354  1.0
  O  O16  1  0.277  0.615  0.913  1.0
  O  O17  1  0.225  0.913  0.616  1.0
[/CIF]
.
The structure described by V4FeCoO12 crystallizes in the triclinic P1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(11), one O(5), one O(7), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent V(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 32-58°. In the second V site, V(2) is bonded to one O(10), one O(12), one O(6), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent V(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 32-57°. In the third V site, V(3) is bonded to one O(1), one O(3), one O(7), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-59°. In the fourth V site, V(4) is bonded to one O(10), one O(2), one O(4), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-60°. Fe(1) is bonded to one O(1), one O(11), one O(12), one O(2), one O(5), and one O(6) atom to form FeO6 octahedra that share  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and edges with two equivalent Co(1)O6 octahedra. Co(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(3), one Fe(1), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(4), one Fe(1), and one Co(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(3) and one Co(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(4) and one Co(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one V(1), one Fe(1), and one Co(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(2), one Fe(1), and one Co(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(1) and one Fe(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one V(2) and one Fe(1) atom. is represented by the CIF file [CIF]
data_V4FeCoO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.917
_cell_length_b   6.865
_cell_length_c   6.829
_cell_angle_alpha   96.375
_cell_angle_beta   74.580
_cell_angle_gamma   105.467
_symmetry_Int_Tables_number   1
_cell_volume   257.511
_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
  V  V0  1  0.256  0.386  0.794  1.0
  V  V1  1  0.244  0.793  0.386  1.0
  V  V2  1  0.760  0.209  0.612  1.0
  V  V3  1  0.741  0.612  0.207  1.0
  Fe  Fe4  1  0.249  0.913  0.914  1.0
  Co  Co5  1  0.750  0.088  0.087  1.0
  O  O6  1  0.647  0.042  0.804  1.0
  O  O7  1  0.853  0.804  0.040  1.0
  O  O8  1  0.777  0.090  0.381  1.0
  O  O9  1  0.722  0.382  0.090  1.0
  O  O10  1  0.132  0.194  0.962  1.0
  O  O11  1  0.367  0.960  0.192  1.0
  O  O12  1  0.552  0.367  0.650  1.0
  O  O13  1  0.949  0.650  0.367  1.0
  O  O14  1  0.056  0.354  0.630  1.0
  O  O15  1  0.444  0.630  0.354  1.0
  O  O16  1  0.277  0.615  0.913  1.0
  O  O17  1  0.225  0.913  0.616  1.0
[/CIF]
.