The material described by B8O crystallizes in the monoclinic C2/m space group. There are fourteen inequivalent B sites. In the first B site, B(1) is bonded in a single-bond geometry to one B(2), two equivalent B(5), and one O(1) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to one B(1), one B(2), two equivalent B(5), and two equivalent B(9) atoms. In the third B site, B(3) is bonded in a 6-coordinate geometry to one B(10), one B(3), one B(4), one B(6), one B(7), and one B(8) atom. In the fourth B site, B(4) is bonded in a 6-coordinate geometry to one B(10), one B(3), one B(5), one B(6), one B(7), and one B(8) atom. In the fifth B site, B(5) is bonded in a 6-coordinate geometry to one B(1), one B(2), one B(4), one B(5), and two equivalent B(9) atoms. In the sixth B site, B(6) is bonded in a single-bond geometry to one B(10), one B(3), one B(4), one B(7), and one O(1) atom. In the seventh B site, B(7) is bonded in a 6-coordinate geometry to one B(10), one B(11), one B(3), one B(4), one B(6), and one B(8) atom. In the eighth B site, B(8) is bonded in a single-bond geometry to one B(10), one B(3), one B(4), one B(7), and one O(2) atom. In the ninth B site, B(9) is bonded in a single-bond geometry to one B(2), two equivalent B(5), and one O(2) atom. In the tenth B site, B(10) is bonded in a 7-coordinate geometry to one B(10), one B(14), one B(3), one B(4), one B(6), one B(7), and one B(8) atom. In the eleventh B site, B(11) is bonded in a 6-coordinate geometry to one B(11), one B(13), one B(14), one B(7), and two equivalent B(12) atoms. In the twelfth B site, B(12) is bonded in a single-bond geometry to one B(13), one B(14), two equivalent B(11), and one O(2) atom. In the thirteenth B site, B(13) is bonded in a 6-coordinate geometry to one B(13), one B(14), two equivalent B(11), and two equivalent B(12) atoms. In the fourteenth B site, B(14) is bonded in a 7-coordinate geometry to one B(13), two equivalent B(10), two equivalent B(11), and two equivalent B(12) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one B(1) and two equivalent B(6) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one B(12), one B(8), and one B(9) atom. is represented by the CIF file [CIF]
data_B8O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.100
_cell_length_b   9.100
_cell_length_c   5.142
_cell_angle_alpha   87.861
_cell_angle_beta   87.861
_cell_angle_gamma   71.375
_symmetry_Int_Tables_number   1
_cell_volume   403.048
_cell_formula_units_Z   6
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
  B  B0  1  0.101  0.101  0.123  1.0
  B  B1  1  0.000  0.000  0.664  1.0
  B  B2  1  0.503  0.996  0.165  1.0
  B  B3  1  0.669  0.996  0.330  1.0
  B  B4  1  0.167  0.000  0.831  1.0
  B  B5  1  0.338  0.102  0.361  1.0
  B  B6  1  0.501  0.167  0.331  1.0
  B  B7  1  0.000  0.167  0.831  1.0
  B  B8  1  0.102  0.338  0.361  1.0
  B  B9  1  0.599  0.102  0.622  1.0
  B  B10  1  0.899  0.162  0.140  1.0
  B  B11  1  0.394  0.176  0.643  1.0
  B  B12  1  0.498  0.332  0.163  1.0
  B  B13  1  0.996  0.503  0.165  1.0
  B  B14  1  0.662  0.401  0.142  1.0
  B  B15  1  0.176  0.394  0.643  1.0
  B  B16  1  0.167  0.501  0.331  1.0
  B  B17  1  0.332  0.498  0.163  1.0
  B  B18  1  0.838  0.101  0.860  1.0
  B  B19  1  0.500  0.500  0.335  1.0
  B  B20  1  0.996  0.669  0.330  1.0
  B  B21  1  0.898  0.401  0.378  1.0
  B  B22  1  0.394  0.394  0.860  1.0
  B  B23  1  0.599  0.338  0.858  1.0
  B  B24  1  0.102  0.599  0.622  1.0
  B  B25  1  0.606  0.606  0.140  1.0
  B  B26  1  0.401  0.662  0.142  1.0
  B  B27  1  0.004  0.331  0.670  1.0
  B  B28  1  0.500  0.500  0.665  1.0
  B  B29  1  0.162  0.899  0.140  1.0
  B  B30  1  0.668  0.502  0.837  1.0
  B  B31  1  0.833  0.499  0.669  1.0
  B  B32  1  0.824  0.606  0.357  1.0
  B  B33  1  0.338  0.599  0.858  1.0
  B  B34  1  0.004  0.497  0.835  1.0
  B  B35  1  0.502  0.668  0.837  1.0
  B  B36  1  0.401  0.898  0.378  1.0
  B  B37  1  0.101  0.838  0.860  1.0
  B  B38  1  0.606  0.824  0.357  1.0
  B  B39  1  0.898  0.662  0.639  1.0
  B  B40  1  0.499  0.833  0.669  1.0
  B  B41  1  1.000  0.833  0.169  1.0
  B  B42  1  0.662  0.898  0.639  1.0
  B  B43  1  0.331  0.004  0.670  1.0
  B  B44  1  0.833  1.000  0.169  1.0
  B  B45  1  0.497  0.004  0.835  1.0
  B  B46  1  1.000  1.000  0.336  1.0
  B  B47  1  0.899  0.899  0.877  1.0
  O  O48  1  0.190  0.190  0.239  1.0
  O  O49  1  0.810  0.311  0.259  1.0
  O  O50  1  0.689  0.190  0.741  1.0
  O  O51  1  0.311  0.810  0.259  1.0
  O  O52  1  0.190  0.689  0.741  1.0
  O  O53  1  0.810  0.810  0.761  1.0
[/CIF]
.
The material described by B8O crystallizes in the monoclinic C2/m space group. There are fourteen inequivalent B sites. In the first B site, B(1) is bonded in a single-bond geometry to one B(2), two equivalent B(5), and one O(1) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to one B(1), one B(2), two equivalent B(5), and two equivalent B(9) atoms. In the third B site, B(3) is bonded in a 6-coordinate geometry to one B(10), one B(3), one B(4), one B(6), one B(7), and one B(8) atom. In the fourth B site, B(4) is bonded in a 6-coordinate geometry to one B(10), one B(3), one B(5), one B(6), one B(7), and one B(8) atom. In the fifth B site, B(5) is bonded in a 6-coordinate geometry to one B(1), one B(2), one B(4), one B(5), and two equivalent B(9) atoms. In the sixth B site, B(6) is bonded in a single-bond geometry to one B(10), one B(3), one B(4), one B(7), and one O(1) atom. In the seventh B site, B(7) is bonded in a 6-coordinate geometry to one B(10), one B(11), one B(3), one B(4), one B(6), and one B(8) atom. In the eighth B site, B(8) is bonded in a single-bond geometry to one B(10), one B(3), one B(4), one B(7), and one O(2) atom. In the ninth B site, B(9) is bonded in a single-bond geometry to one B(2), two equivalent B(5), and one O(2) atom. In the tenth B site, B(10) is bonded in a 7-coordinate geometry to one B(10), one B(14), one B(3), one B(4), one B(6), one B(7), and one B(8) atom. In the eleventh B site, B(11) is bonded in a 6-coordinate geometry to one B(11), one B(13), one B(14), one B(7), and two equivalent B(12) atoms. In the twelfth B site, B(12) is bonded in a single-bond geometry to one B(13), one B(14), two equivalent B(11), and one O(2) atom. In the thirteenth B site, B(13) is bonded in a 6-coordinate geometry to one B(13), one B(14), two equivalent B(11), and two equivalent B(12) atoms. In the fourteenth B site, B(14) is bonded in a 7-coordinate geometry to one B(13), two equivalent B(10), two equivalent B(11), and two equivalent B(12) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one B(1) and two equivalent B(6) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one B(12), one B(8), and one B(9) atom. is represented by the CIF file [CIF]
data_B8O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.100
_cell_length_b   9.100
_cell_length_c   5.142
_cell_angle_alpha   87.861
_cell_angle_beta   87.861
_cell_angle_gamma   71.375
_symmetry_Int_Tables_number   1
_cell_volume   403.048
_cell_formula_units_Z   6
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
  B  B0  1  0.101  0.101  0.123  1.0
  B  B1  1  0.000  0.000  0.664  1.0
  B  B2  1  0.503  0.996  0.165  1.0
  B  B3  1  0.669  0.996  0.330  1.0
  B  B4  1  0.167  0.000  0.831  1.0
  B  B5  1  0.338  0.102  0.361  1.0
  B  B6  1  0.501  0.167  0.331  1.0
  B  B7  1  0.000  0.167  0.831  1.0
  B  B8  1  0.102  0.338  0.361  1.0
  B  B9  1  0.599  0.102  0.622  1.0
  B  B10  1  0.899  0.162  0.140  1.0
  B  B11  1  0.394  0.176  0.643  1.0
  B  B12  1  0.498  0.332  0.163  1.0
  B  B13  1  0.996  0.503  0.165  1.0
  B  B14  1  0.662  0.401  0.142  1.0
  B  B15  1  0.176  0.394  0.643  1.0
  B  B16  1  0.167  0.501  0.331  1.0
  B  B17  1  0.332  0.498  0.163  1.0
  B  B18  1  0.838  0.101  0.860  1.0
  B  B19  1  0.500  0.500  0.335  1.0
  B  B20  1  0.996  0.669  0.330  1.0
  B  B21  1  0.898  0.401  0.378  1.0
  B  B22  1  0.394  0.394  0.860  1.0
  B  B23  1  0.599  0.338  0.858  1.0
  B  B24  1  0.102  0.599  0.622  1.0
  B  B25  1  0.606  0.606  0.140  1.0
  B  B26  1  0.401  0.662  0.142  1.0
  B  B27  1  0.004  0.331  0.670  1.0
  B  B28  1  0.500  0.500  0.665  1.0
  B  B29  1  0.162  0.899  0.140  1.0
  B  B30  1  0.668  0.502  0.837  1.0
  B  B31  1  0.833  0.499  0.669  1.0
  B  B32  1  0.824  0.606  0.357  1.0
  B  B33  1  0.338  0.599  0.858  1.0
  B  B34  1  0.004  0.497  0.835  1.0
  B  B35  1  0.502  0.668  0.837  1.0
  B  B36  1  0.401  0.898  0.378  1.0
  B  B37  1  0.101  0.838  0.860  1.0
  B  B38  1  0.606  0.824  0.357  1.0
  B  B39  1  0.898  0.662  0.639  1.0
  B  B40  1  0.499  0.833  0.669  1.0
  B  B41  1  1.000  0.833  0.169  1.0
  B  B42  1  0.662  0.898  0.639  1.0
  B  B43  1  0.331  0.004  0.670  1.0
  B  B44  1  0.833  1.000  0.169  1.0
  B  B45  1  0.497  0.004  0.835  1.0
  B  B46  1  1.000  1.000  0.336  1.0
  B  B47  1  0.899  0.899  0.877  1.0
  O  O48  1  0.190  0.190  0.239  1.0
  O  O49  1  0.810  0.311  0.259  1.0
  O  O50  1  0.689  0.190  0.741  1.0
  O  O51  1  0.311  0.810  0.259  1.0
  O  O52  1  0.190  0.689  0.741  1.0
  O  O53  1  0.810  0.810  0.761  1.0
[/CIF]
.