The crystal structure described by RbAlBr4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one Br(1), one Br(2), and six equivalent Br(3) atoms. Al(1) is bonded in a tetrahedral geometry to one Br(1), one Br(2), and two equivalent Br(3) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and one Al(1) atom. In the second Br site, Br(2) is bonded in a distorted single-bond geometry to one Rb(1) and one Al(1) atom. In the third Br site, Br(3) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one Al(1) atom. is represented by the CIF file [CIF]
data_RbAlBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.530
_cell_length_b   9.877
_cell_length_c   11.828
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   879.726
_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  0.250  0.665  0.181  1.0
  Rb  Rb1  1  0.750  0.335  0.819  1.0
  Rb  Rb2  1  0.750  0.165  0.319  1.0
  Rb  Rb3  1  0.250  0.835  0.681  1.0
  Al  Al4  1  0.250  0.190  0.062  1.0
  Al  Al5  1  0.750  0.810  0.938  1.0
  Al  Al6  1  0.750  0.690  0.438  1.0
  Al  Al7  1  0.250  0.310  0.562  1.0
  Br  Br8  1  0.250  0.406  0.386  1.0
  Br  Br9  1  0.750  0.594  0.614  1.0
  Br  Br10  1  0.750  0.906  0.114  1.0
  Br  Br11  1  0.250  0.094  0.886  1.0
  Br  Br12  1  0.250  0.035  0.207  1.0
  Br  Br13  1  0.750  0.965  0.793  1.0
  Br  Br14  1  0.750  0.535  0.293  1.0
  Br  Br15  1  0.250  0.465  0.707  1.0
  Br  Br16  1  0.002  0.327  0.081  1.0
  Br  Br17  1  0.998  0.673  0.919  1.0
  Br  Br18  1  0.998  0.827  0.419  1.0
  Br  Br19  1  0.502  0.673  0.919  1.0
  Br  Br20  1  0.002  0.173  0.581  1.0
  Br  Br21  1  0.498  0.327  0.081  1.0
  Br  Br22  1  0.498  0.173  0.581  1.0
  Br  Br23  1  0.502  0.827  0.419  1.0
[/CIF]
.
The crystal structure described by RbAlBr4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one Br(1), one Br(2), and six equivalent Br(3) atoms. Al(1) is bonded in a tetrahedral geometry to one Br(1), one Br(2), and two equivalent Br(3) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and one Al(1) atom. In the second Br site, Br(2) is bonded in a distorted single-bond geometry to one Rb(1) and one Al(1) atom. In the third Br site, Br(3) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one Al(1) atom. is represented by the CIF file [CIF]
data_RbAlBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.530
_cell_length_b   9.877
_cell_length_c   11.828
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   879.726
_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  0.250  0.665  0.181  1.0
  Rb  Rb1  1  0.750  0.335  0.819  1.0
  Rb  Rb2  1  0.750  0.165  0.319  1.0
  Rb  Rb3  1  0.250  0.835  0.681  1.0
  Al  Al4  1  0.250  0.190  0.062  1.0
  Al  Al5  1  0.750  0.810  0.938  1.0
  Al  Al6  1  0.750  0.690  0.438  1.0
  Al  Al7  1  0.250  0.310  0.562  1.0
  Br  Br8  1  0.250  0.406  0.386  1.0
  Br  Br9  1  0.750  0.594  0.614  1.0
  Br  Br10  1  0.750  0.906  0.114  1.0
  Br  Br11  1  0.250  0.094  0.886  1.0
  Br  Br12  1  0.250  0.035  0.207  1.0
  Br  Br13  1  0.750  0.965  0.793  1.0
  Br  Br14  1  0.750  0.535  0.293  1.0
  Br  Br15  1  0.250  0.465  0.707  1.0
  Br  Br16  1  0.002  0.327  0.081  1.0
  Br  Br17  1  0.998  0.673  0.919  1.0
  Br  Br18  1  0.998  0.827  0.419  1.0
  Br  Br19  1  0.502  0.673  0.919  1.0
  Br  Br20  1  0.002  0.173  0.581  1.0
  Br  Br21  1  0.498  0.327  0.081  1.0
  Br  Br22  1  0.498  0.173  0.581  1.0
  Br  Br23  1  0.502  0.827  0.419  1.0
[/CIF]
.