The compound described by Co11B4SbO20 crystallizes in the monoclinic C2/m space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the second Co site, Co(2) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the third Co site, Co(3) is bonded to one O(5), one O(6), and four equivalent O(1) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the fourth Co site, Co(4) 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 Co(5)O6 octahedra,  a cornercorner with one Co(6)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-64°. In the fifth Co site, Co(5) is bonded to two equivalent O(4), two equivalent O(7), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 63°. In the sixth Co site, Co(6) is bonded to two equivalent O(8) and four equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent Co(4)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles are 64°. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(3), one O(5), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(8) atom. Sb(1) is bonded to two equivalent O(7) and four equivalent O(4) atoms to form SbO6 octahedra that share corners with four equivalent Co(4)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(2), one Co(4), and two equivalent Co(3) atoms to form OCo5 square pyramids that share corners with four equivalent O(1)Co5 square pyramids,  a cornercorner with one O(4)Co3Sb tetrahedra, and edges with four equivalent O(1)Co5 square pyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Co(4), and one B(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(4), and one B(1) atom. In the fourth O site, O(4) is bonded to one Co(4), one Co(5), one Co(6), and one Sb(1) atom to form OCo3Sb tetrahedra that share  a cornercorner with one O(1)Co5 square pyramid, corners with five equivalent O(4)Co3Sb tetrahedra, and  an edgeedge with one O(4)Co3Sb tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Co(3), two equivalent Co(4), and one B(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Co(3), two equivalent Co(4), and one B(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Co(5), one B(1), and one Sb(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Co(6), two equivalent Co(5), and one B(2) atom. is represented by the CIF card [CIF]
data_Co11B4SbO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.264
_cell_length_b   6.264
_cell_length_c   11.708
_cell_angle_alpha   69.894
_cell_angle_beta   69.894
_cell_angle_gamma   59.668
_symmetry_Int_Tables_number   1
_cell_volume   364.014
_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
  Co  Co0  1  0.500  0.500  0.000  1.0
  Co  Co1  1  0.000  0.000  0.000  1.0
  Co  Co2  1  0.750  0.750  0.999  1.0
  Co  Co3  1  0.250  0.250  0.001  1.0
  Co  Co4  1  0.220  0.718  0.782  1.0
  Co  Co5  1  0.718  0.220  0.782  1.0
  Co  Co6  1  0.282  0.780  0.218  1.0
  Co  Co7  1  0.780  0.282  0.218  1.0
  Co  Co8  1  0.500  0.000  0.500  1.0
  Co  Co9  1  0.000  0.500  0.500  1.0
  Co  Co10  1  0.000  0.000  0.500  1.0
  B  B11  1  0.236  0.236  0.742  1.0
  B  B12  1  0.736  0.736  0.737  1.0
  B  B13  1  0.764  0.764  0.258  1.0
  B  B14  1  0.264  0.264  0.263  1.0
  Sb  Sb15  1  0.500  0.500  0.500  1.0
  O  O16  1  0.136  0.639  0.971  1.0
  O  O17  1  0.639  0.136  0.971  1.0
  O  O18  1  0.361  0.864  0.029  1.0
  O  O19  1  0.864  0.361  0.029  1.0
  O  O20  1  0.598  0.598  0.802  1.0
  O  O21  1  0.099  0.099  0.799  1.0
  O  O22  1  0.402  0.402  0.198  1.0
  O  O23  1  0.901  0.901  0.201  1.0
  O  O24  1  0.309  0.782  0.591  1.0
  O  O25  1  0.782  0.309  0.591  1.0
  O  O26  1  0.218  0.691  0.409  1.0
  O  O27  1  0.691  0.218  0.409  1.0
  O  O28  1  0.322  0.322  0.802  1.0
  O  O29  1  0.822  0.822  0.799  1.0
  O  O30  1  0.678  0.678  0.198  1.0
  O  O31  1  0.178  0.178  0.201  1.0
  O  O32  1  0.294  0.294  0.609  1.0
  O  O33  1  0.789  0.789  0.607  1.0
  O  O34  1  0.706  0.706  0.391  1.0
  O  O35  1  0.211  0.211  0.393  1.0
[/CIF]
.
The compound described by Co11B4SbO20 crystallizes in the monoclinic C2/m space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the second Co site, Co(2) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the third Co site, Co(3) is bonded to one O(5), one O(6), and four equivalent O(1) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the fourth Co site, Co(4) 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 Co(5)O6 octahedra,  a cornercorner with one Co(6)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-64°. In the fifth Co site, Co(5) is bonded to two equivalent O(4), two equivalent O(7), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 63°. In the sixth Co site, Co(6) is bonded to two equivalent O(8) and four equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent Co(4)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles are 64°. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(3), one O(5), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(8) atom. Sb(1) is bonded to two equivalent O(7) and four equivalent O(4) atoms to form SbO6 octahedra that share corners with four equivalent Co(4)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(2), one Co(4), and two equivalent Co(3) atoms to form OCo5 square pyramids that share corners with four equivalent O(1)Co5 square pyramids,  a cornercorner with one O(4)Co3Sb tetrahedra, and edges with four equivalent O(1)Co5 square pyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Co(4), and one B(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(4), and one B(1) atom. In the fourth O site, O(4) is bonded to one Co(4), one Co(5), one Co(6), and one Sb(1) atom to form OCo3Sb tetrahedra that share  a cornercorner with one O(1)Co5 square pyramid, corners with five equivalent O(4)Co3Sb tetrahedra, and  an edgeedge with one O(4)Co3Sb tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Co(3), two equivalent Co(4), and one B(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Co(3), two equivalent Co(4), and one B(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Co(5), one B(1), and one Sb(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Co(6), two equivalent Co(5), and one B(2) atom. is represented by the CIF card [CIF]
data_Co11B4SbO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.264
_cell_length_b   6.264
_cell_length_c   11.708
_cell_angle_alpha   69.894
_cell_angle_beta   69.894
_cell_angle_gamma   59.668
_symmetry_Int_Tables_number   1
_cell_volume   364.014
_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
  Co  Co0  1  0.500  0.500  0.000  1.0
  Co  Co1  1  0.000  0.000  0.000  1.0
  Co  Co2  1  0.750  0.750  0.999  1.0
  Co  Co3  1  0.250  0.250  0.001  1.0
  Co  Co4  1  0.220  0.718  0.782  1.0
  Co  Co5  1  0.718  0.220  0.782  1.0
  Co  Co6  1  0.282  0.780  0.218  1.0
  Co  Co7  1  0.780  0.282  0.218  1.0
  Co  Co8  1  0.500  0.000  0.500  1.0
  Co  Co9  1  0.000  0.500  0.500  1.0
  Co  Co10  1  0.000  0.000  0.500  1.0
  B  B11  1  0.236  0.236  0.742  1.0
  B  B12  1  0.736  0.736  0.737  1.0
  B  B13  1  0.764  0.764  0.258  1.0
  B  B14  1  0.264  0.264  0.263  1.0
  Sb  Sb15  1  0.500  0.500  0.500  1.0
  O  O16  1  0.136  0.639  0.971  1.0
  O  O17  1  0.639  0.136  0.971  1.0
  O  O18  1  0.361  0.864  0.029  1.0
  O  O19  1  0.864  0.361  0.029  1.0
  O  O20  1  0.598  0.598  0.802  1.0
  O  O21  1  0.099  0.099  0.799  1.0
  O  O22  1  0.402  0.402  0.198  1.0
  O  O23  1  0.901  0.901  0.201  1.0
  O  O24  1  0.309  0.782  0.591  1.0
  O  O25  1  0.782  0.309  0.591  1.0
  O  O26  1  0.218  0.691  0.409  1.0
  O  O27  1  0.691  0.218  0.409  1.0
  O  O28  1  0.322  0.322  0.802  1.0
  O  O29  1  0.822  0.822  0.799  1.0
  O  O30  1  0.678  0.678  0.198  1.0
  O  O31  1  0.178  0.178  0.201  1.0
  O  O32  1  0.294  0.294  0.609  1.0
  O  O33  1  0.789  0.789  0.607  1.0
  O  O34  1  0.706  0.706  0.391  1.0
  O  O35  1  0.211  0.211  0.393  1.0
[/CIF]
.