The material described by RbLi2B3Sb2O9 crystallizes in the monoclinic P2/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. Li(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra and corners with three equivalent Sb(1)O4 trigonal pyramids. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(4) atoms. Sb(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SbO4 trigonal pyramids that share corners with three equivalent Li(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one B(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one B(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one B(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one B(2), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Rb(1), two equivalent Li(1), and one B(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbLi2B3Sb2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.624
_cell_length_b   6.381
_cell_length_c   13.137
_cell_angle_alpha   87.574
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   471.022
_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
  Rb  Rb0  1  0.785  0.000  0.750  1.0
  Rb  Rb1  1  0.215  0.000  0.250  1.0
  Li  Li2  1  0.885  0.486  0.856  1.0
  Li  Li3  1  0.885  0.514  0.644  1.0
  Li  Li4  1  0.115  0.486  0.356  1.0
  Li  Li5  1  0.115  0.514  0.144  1.0
  B  B6  1  0.162  0.828  0.972  1.0
  B  B7  1  0.838  0.828  0.472  1.0
  B  B8  1  0.390  0.500  0.750  1.0
  B  B9  1  0.610  0.500  0.250  1.0
  B  B10  1  0.162  0.172  0.528  1.0
  B  B11  1  0.838  0.172  0.028  1.0
  Sb  Sb12  1  0.368  0.730  0.539  1.0
  Sb  Sb13  1  0.632  0.730  0.039  1.0
  Sb  Sb14  1  0.368  0.270  0.961  1.0
  Sb  Sb15  1  0.632  0.270  0.461  1.0
  O  O16  1  0.297  0.978  0.914  1.0
  O  O17  1  0.703  0.978  0.414  1.0
  O  O18  1  0.958  0.747  0.933  1.0
  O  O19  1  0.042  0.747  0.433  1.0
  O  O20  1  0.752  0.760  0.567  1.0
  O  O21  1  0.248  0.760  0.067  1.0
  O  O22  1  0.244  0.603  0.674  1.0
  O  O23  1  0.756  0.603  0.174  1.0
  O  O24  1  0.629  0.500  0.750  1.0
  O  O25  1  0.371  0.500  0.250  1.0
  O  O26  1  0.244  0.397  0.826  1.0
  O  O27  1  0.756  0.397  0.326  1.0
  O  O28  1  0.752  0.240  0.933  1.0
  O  O29  1  0.248  0.240  0.433  1.0
  O  O30  1  0.958  0.253  0.567  1.0
  O  O31  1  0.042  0.253  0.067  1.0
  O  O32  1  0.297  0.022  0.586  1.0
  O  O33  1  0.703  0.022  0.086  1.0
[/CIF]
.
The material described by RbLi2B3Sb2O9 crystallizes in the monoclinic P2/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. Li(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra and corners with three equivalent Sb(1)O4 trigonal pyramids. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(4) atoms. Sb(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SbO4 trigonal pyramids that share corners with three equivalent Li(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one B(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one B(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one B(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one B(2), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Rb(1), two equivalent Li(1), and one B(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbLi2B3Sb2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.624
_cell_length_b   6.381
_cell_length_c   13.137
_cell_angle_alpha   87.574
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   471.022
_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
  Rb  Rb0  1  0.785  0.000  0.750  1.0
  Rb  Rb1  1  0.215  0.000  0.250  1.0
  Li  Li2  1  0.885  0.486  0.856  1.0
  Li  Li3  1  0.885  0.514  0.644  1.0
  Li  Li4  1  0.115  0.486  0.356  1.0
  Li  Li5  1  0.115  0.514  0.144  1.0
  B  B6  1  0.162  0.828  0.972  1.0
  B  B7  1  0.838  0.828  0.472  1.0
  B  B8  1  0.390  0.500  0.750  1.0
  B  B9  1  0.610  0.500  0.250  1.0
  B  B10  1  0.162  0.172  0.528  1.0
  B  B11  1  0.838  0.172  0.028  1.0
  Sb  Sb12  1  0.368  0.730  0.539  1.0
  Sb  Sb13  1  0.632  0.730  0.039  1.0
  Sb  Sb14  1  0.368  0.270  0.961  1.0
  Sb  Sb15  1  0.632  0.270  0.461  1.0
  O  O16  1  0.297  0.978  0.914  1.0
  O  O17  1  0.703  0.978  0.414  1.0
  O  O18  1  0.958  0.747  0.933  1.0
  O  O19  1  0.042  0.747  0.433  1.0
  O  O20  1  0.752  0.760  0.567  1.0
  O  O21  1  0.248  0.760  0.067  1.0
  O  O22  1  0.244  0.603  0.674  1.0
  O  O23  1  0.756  0.603  0.174  1.0
  O  O24  1  0.629  0.500  0.750  1.0
  O  O25  1  0.371  0.500  0.250  1.0
  O  O26  1  0.244  0.397  0.826  1.0
  O  O27  1  0.756  0.397  0.326  1.0
  O  O28  1  0.752  0.240  0.933  1.0
  O  O29  1  0.248  0.240  0.433  1.0
  O  O30  1  0.958  0.253  0.567  1.0
  O  O31  1  0.042  0.253  0.067  1.0
  O  O32  1  0.297  0.022  0.586  1.0
  O  O33  1  0.703  0.022  0.086  1.0
[/CIF]
.