The structure described by CoAl4(BO5)2 is beta indium sulfide-derived structured and crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent Al(1)O6 octahedra, corners with two equivalent B(1)O4 tetrahedra, edges with two equivalent Al(1)O6 octahedra, edges with two equivalent Al(2)O6 octahedra, and edges with two equivalent B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 60-72°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form AlO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, corners with three equivalent B(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Al(2)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-72°. In the second Al site, Al(2) is bonded to one O(1), one O(4), two equivalent O(3), and two equivalent O(5) atoms to form AlO6 octahedra that share corners with two equivalent Al(2)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, corners with two equivalent B(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Al(1)O6 octahedra,  an edgeedge with one Al(2)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-60°. B(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form BO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, corners with three equivalent Al(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Al(1)O6 octahedra, and  an edgeedge with one Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-63°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Co(1), one Al(1), one Al(2), and one B(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), two equivalent Al(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Al(1) and two equivalent Al(2) atoms. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Co(1), one Al(1), one Al(2), and one B(1) atom. In the fifth O site, O(5) is bonded to one Al(1), two equivalent Al(2), and one B(1) atom to form distorted corner-sharing OAl3B trigonal pyramids. is represented by the CIF card [CIF]
data_Al4Co(BO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.399
_cell_length_b   7.269
_cell_length_c   9.618
_cell_angle_alpha   71.564
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   291.754
_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
  Al  Al0  1  0.522  0.297  0.332  1.0
  Al  Al1  1  0.478  0.703  0.668  1.0
  Al  Al2  1  0.006  0.925  0.391  1.0
  Al  Al3  1  0.994  0.075  0.609  1.0
  Al  Al4  1  0.506  0.075  0.109  1.0
  Al  Al5  1  0.494  0.925  0.891  1.0
  Al  Al6  1  0.022  0.703  0.168  1.0
  Al  Al7  1  0.978  0.297  0.832  1.0
  Co  Co8  1  0.000  0.500  0.500  1.0
  Co  Co9  1  0.500  0.500  0.000  1.0
  B  B10  1  0.571  0.709  0.351  1.0
  B  B11  1  0.429  0.291  0.649  1.0
  B  B12  1  0.929  0.709  0.851  1.0
  B  B13  1  0.071  0.291  0.149  1.0
  O  O14  1  0.742  0.281  0.156  1.0
  O  O15  1  0.709  0.541  0.315  1.0
  O  O16  1  0.758  0.281  0.656  1.0
  O  O17  1  0.785  0.113  0.439  1.0
  O  O18  1  0.699  0.712  0.496  1.0
  O  O19  1  0.791  0.541  0.815  1.0
  O  O20  1  0.215  0.887  0.561  1.0
  O  O21  1  0.258  0.719  0.844  1.0
  O  O22  1  0.285  0.887  0.061  1.0
  O  O23  1  0.715  0.113  0.939  1.0
  O  O24  1  0.291  0.459  0.685  1.0
  O  O25  1  0.199  0.288  0.004  1.0
  O  O26  1  0.757  0.879  0.743  1.0
  O  O27  1  0.242  0.719  0.344  1.0
  O  O28  1  0.209  0.459  0.185  1.0
  O  O29  1  0.801  0.712  0.996  1.0
  O  O30  1  0.257  0.121  0.757  1.0
  O  O31  1  0.743  0.879  0.243  1.0
  O  O32  1  0.301  0.288  0.504  1.0
  O  O33  1  0.243  0.121  0.257  1.0
[/CIF]
.
The structure described by CoAl4(BO5)2 is beta indium sulfide-derived structured and crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent Al(1)O6 octahedra, corners with two equivalent B(1)O4 tetrahedra, edges with two equivalent Al(1)O6 octahedra, edges with two equivalent Al(2)O6 octahedra, and edges with two equivalent B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 60-72°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form AlO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, corners with three equivalent B(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Al(2)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-72°. In the second Al site, Al(2) is bonded to one O(1), one O(4), two equivalent O(3), and two equivalent O(5) atoms to form AlO6 octahedra that share corners with two equivalent Al(2)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, corners with two equivalent B(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Al(1)O6 octahedra,  an edgeedge with one Al(2)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-60°. B(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form BO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, corners with three equivalent Al(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Al(1)O6 octahedra, and  an edgeedge with one Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-63°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Co(1), one Al(1), one Al(2), and one B(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), two equivalent Al(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Al(1) and two equivalent Al(2) atoms. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Co(1), one Al(1), one Al(2), and one B(1) atom. In the fifth O site, O(5) is bonded to one Al(1), two equivalent Al(2), and one B(1) atom to form distorted corner-sharing OAl3B trigonal pyramids. is represented by the CIF card [CIF]
data_Al4Co(BO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.399
_cell_length_b   7.269
_cell_length_c   9.618
_cell_angle_alpha   71.564
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   291.754
_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
  Al  Al0  1  0.522  0.297  0.332  1.0
  Al  Al1  1  0.478  0.703  0.668  1.0
  Al  Al2  1  0.006  0.925  0.391  1.0
  Al  Al3  1  0.994  0.075  0.609  1.0
  Al  Al4  1  0.506  0.075  0.109  1.0
  Al  Al5  1  0.494  0.925  0.891  1.0
  Al  Al6  1  0.022  0.703  0.168  1.0
  Al  Al7  1  0.978  0.297  0.832  1.0
  Co  Co8  1  0.000  0.500  0.500  1.0
  Co  Co9  1  0.500  0.500  0.000  1.0
  B  B10  1  0.571  0.709  0.351  1.0
  B  B11  1  0.429  0.291  0.649  1.0
  B  B12  1  0.929  0.709  0.851  1.0
  B  B13  1  0.071  0.291  0.149  1.0
  O  O14  1  0.742  0.281  0.156  1.0
  O  O15  1  0.709  0.541  0.315  1.0
  O  O16  1  0.758  0.281  0.656  1.0
  O  O17  1  0.785  0.113  0.439  1.0
  O  O18  1  0.699  0.712  0.496  1.0
  O  O19  1  0.791  0.541  0.815  1.0
  O  O20  1  0.215  0.887  0.561  1.0
  O  O21  1  0.258  0.719  0.844  1.0
  O  O22  1  0.285  0.887  0.061  1.0
  O  O23  1  0.715  0.113  0.939  1.0
  O  O24  1  0.291  0.459  0.685  1.0
  O  O25  1  0.199  0.288  0.004  1.0
  O  O26  1  0.757  0.879  0.743  1.0
  O  O27  1  0.242  0.719  0.344  1.0
  O  O28  1  0.209  0.459  0.185  1.0
  O  O29  1  0.801  0.712  0.996  1.0
  O  O30  1  0.257  0.121  0.757  1.0
  O  O31  1  0.743  0.879  0.243  1.0
  O  O32  1  0.301  0.288  0.504  1.0
  O  O33  1  0.243  0.121  0.257  1.0
[/CIF]
.