The material described by RbB3O5 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. In the third B site, B(3) is bonded to one O(2), one O(5), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing BO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one B(1) and two equivalent B(3) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one B(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one B(2), and one B(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbB3O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.705
_cell_length_b   6.705
_cell_length_c   9.308
_cell_angle_alpha   80.198
_cell_angle_beta   80.198
_cell_angle_gamma   83.918
_symmetry_Int_Tables_number   1
_cell_volume   405.039
_cell_formula_units_Z   4
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
  Rb  Rb0  1  0.266  0.577  0.946  1.0
  Rb  Rb1  1  0.423  0.734  0.554  1.0
  Rb  Rb2  1  0.734  0.423  0.054  1.0
  Rb  Rb3  1  0.577  0.266  0.446  1.0
  B  B4  1  0.807  0.791  0.735  1.0
  B  B5  1  0.209  0.193  0.765  1.0
  B  B6  1  0.193  0.209  0.265  1.0
  B  B7  1  0.791  0.807  0.235  1.0
  B  B8  1  0.932  0.429  0.680  1.0
  B  B9  1  0.571  0.068  0.820  1.0
  B  B10  1  0.068  0.571  0.320  1.0
  B  B11  1  0.429  0.932  0.180  1.0
  B  B12  1  0.034  0.113  0.568  1.0
  B  B13  1  0.887  0.966  0.932  1.0
  B  B14  1  0.966  0.887  0.432  1.0
  B  B15  1  0.113  0.034  0.068  1.0
  O  O16  1  0.927  0.911  0.596  1.0
  O  O17  1  0.089  0.073  0.904  1.0
  O  O18  1  0.073  0.089  0.404  1.0
  O  O19  1  0.911  0.927  0.096  1.0
  O  O20  1  0.904  0.789  0.863  1.0
  O  O21  1  0.211  0.096  0.637  1.0
  O  O22  1  0.096  0.211  0.137  1.0
  O  O23  1  0.789  0.904  0.363  1.0
  O  O24  1  0.105  0.401  0.745  1.0
  O  O25  1  0.599  0.895  0.755  1.0
  O  O26  1  0.895  0.599  0.255  1.0
  O  O27  1  0.401  0.105  0.245  1.0
  O  O28  1  0.789  0.589  0.700  1.0
  O  O29  1  0.411  0.211  0.800  1.0
  O  O30  1  0.211  0.411  0.300  1.0
  O  O31  1  0.589  0.789  0.200  1.0
  O  O32  1  0.894  0.288  0.596  1.0
  O  O33  1  0.712  0.106  0.904  1.0
  O  O34  1  0.106  0.712  0.404  1.0
  O  O35  1  0.288  0.894  0.096  1.0
[/CIF]
.
The material described by RbB3O5 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. In the third B site, B(3) is bonded to one O(2), one O(5), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing BO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one B(1) and two equivalent B(3) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one B(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one B(2), and one B(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbB3O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.705
_cell_length_b   6.705
_cell_length_c   9.308
_cell_angle_alpha   80.198
_cell_angle_beta   80.198
_cell_angle_gamma   83.918
_symmetry_Int_Tables_number   1
_cell_volume   405.039
_cell_formula_units_Z   4
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
  Rb  Rb0  1  0.266  0.577  0.946  1.0
  Rb  Rb1  1  0.423  0.734  0.554  1.0
  Rb  Rb2  1  0.734  0.423  0.054  1.0
  Rb  Rb3  1  0.577  0.266  0.446  1.0
  B  B4  1  0.807  0.791  0.735  1.0
  B  B5  1  0.209  0.193  0.765  1.0
  B  B6  1  0.193  0.209  0.265  1.0
  B  B7  1  0.791  0.807  0.235  1.0
  B  B8  1  0.932  0.429  0.680  1.0
  B  B9  1  0.571  0.068  0.820  1.0
  B  B10  1  0.068  0.571  0.320  1.0
  B  B11  1  0.429  0.932  0.180  1.0
  B  B12  1  0.034  0.113  0.568  1.0
  B  B13  1  0.887  0.966  0.932  1.0
  B  B14  1  0.966  0.887  0.432  1.0
  B  B15  1  0.113  0.034  0.068  1.0
  O  O16  1  0.927  0.911  0.596  1.0
  O  O17  1  0.089  0.073  0.904  1.0
  O  O18  1  0.073  0.089  0.404  1.0
  O  O19  1  0.911  0.927  0.096  1.0
  O  O20  1  0.904  0.789  0.863  1.0
  O  O21  1  0.211  0.096  0.637  1.0
  O  O22  1  0.096  0.211  0.137  1.0
  O  O23  1  0.789  0.904  0.363  1.0
  O  O24  1  0.105  0.401  0.745  1.0
  O  O25  1  0.599  0.895  0.755  1.0
  O  O26  1  0.895  0.599  0.255  1.0
  O  O27  1  0.401  0.105  0.245  1.0
  O  O28  1  0.789  0.589  0.700  1.0
  O  O29  1  0.411  0.211  0.800  1.0
  O  O30  1  0.211  0.411  0.300  1.0
  O  O31  1  0.589  0.789  0.200  1.0
  O  O32  1  0.894  0.288  0.596  1.0
  O  O33  1  0.712  0.106  0.904  1.0
  O  O34  1  0.106  0.712  0.404  1.0
  O  O35  1  0.288  0.894  0.096  1.0
[/CIF]
.