The structure described by KAlBr4 crystallizes in the monoclinic P2/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent Br(1), two equivalent Br(2), and two equivalent Br(4) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Br(1), two equivalent Br(2), two equivalent Br(3), and two equivalent Br(4) atoms. Al(1) is bonded in a tetrahedral geometry to one Br(1), one Br(2), one Br(3), and one Br(4) atom. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one K(2), and one Al(1) atom. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Al(1) atom. In the third Br site, Br(3) is bonded in a distorted single-bond geometry to one K(2) and one Al(1) atom. In the fourth Br site, Br(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Al(1) atom. is represented by the CIF file [CIF]
data_KAlBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.548
_cell_length_b   8.678
_cell_length_c   13.320
_cell_angle_alpha   74.817
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   842.034
_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
  K  K0  1  0.897  0.000  0.750  1.0
  K  K1  1  0.103  0.000  0.250  1.0
  K  K2  1  0.363  0.500  0.750  1.0
  K  K3  1  0.637  0.500  0.250  1.0
  Al  Al4  1  0.785  0.711  0.549  1.0
  Al  Al5  1  0.215  0.289  0.451  1.0
  Al  Al6  1  0.785  0.289  0.951  1.0
  Al  Al7  1  0.215  0.711  0.049  1.0
  Br  Br8  1  0.246  0.791  0.870  1.0
  Br  Br9  1  0.754  0.209  0.130  1.0
  Br  Br10  1  0.246  0.209  0.630  1.0
  Br  Br11  1  0.754  0.791  0.370  1.0
  Br  Br12  1  0.583  0.848  0.625  1.0
  Br  Br13  1  0.417  0.152  0.375  1.0
  Br  Br14  1  0.583  0.152  0.875  1.0
  Br  Br15  1  0.417  0.848  0.125  1.0
  Br  Br16  1  0.728  0.442  0.606  1.0
  Br  Br17  1  0.272  0.558  0.394  1.0
  Br  Br18  1  0.728  0.558  0.894  1.0
  Br  Br19  1  0.272  0.442  0.106  1.0
  Br  Br20  1  0.933  0.774  0.094  1.0
  Br  Br21  1  0.067  0.226  0.906  1.0
  Br  Br22  1  0.933  0.226  0.406  1.0
  Br  Br23  1  0.067  0.774  0.594  1.0
[/CIF]
.
The structure described by KAlBr4 crystallizes in the monoclinic P2/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent Br(1), two equivalent Br(2), and two equivalent Br(4) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Br(1), two equivalent Br(2), two equivalent Br(3), and two equivalent Br(4) atoms. Al(1) is bonded in a tetrahedral geometry to one Br(1), one Br(2), one Br(3), and one Br(4) atom. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one K(2), and one Al(1) atom. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Al(1) atom. In the third Br site, Br(3) is bonded in a distorted single-bond geometry to one K(2) and one Al(1) atom. In the fourth Br site, Br(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Al(1) atom. is represented by the CIF file [CIF]
data_KAlBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.548
_cell_length_b   8.678
_cell_length_c   13.320
_cell_angle_alpha   74.817
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   842.034
_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
  K  K0  1  0.897  0.000  0.750  1.0
  K  K1  1  0.103  0.000  0.250  1.0
  K  K2  1  0.363  0.500  0.750  1.0
  K  K3  1  0.637  0.500  0.250  1.0
  Al  Al4  1  0.785  0.711  0.549  1.0
  Al  Al5  1  0.215  0.289  0.451  1.0
  Al  Al6  1  0.785  0.289  0.951  1.0
  Al  Al7  1  0.215  0.711  0.049  1.0
  Br  Br8  1  0.246  0.791  0.870  1.0
  Br  Br9  1  0.754  0.209  0.130  1.0
  Br  Br10  1  0.246  0.209  0.630  1.0
  Br  Br11  1  0.754  0.791  0.370  1.0
  Br  Br12  1  0.583  0.848  0.625  1.0
  Br  Br13  1  0.417  0.152  0.375  1.0
  Br  Br14  1  0.583  0.152  0.875  1.0
  Br  Br15  1  0.417  0.848  0.125  1.0
  Br  Br16  1  0.728  0.442  0.606  1.0
  Br  Br17  1  0.272  0.558  0.394  1.0
  Br  Br18  1  0.728  0.558  0.894  1.0
  Br  Br19  1  0.272  0.442  0.106  1.0
  Br  Br20  1  0.933  0.774  0.094  1.0
  Br  Br21  1  0.067  0.226  0.906  1.0
  Br  Br22  1  0.933  0.226  0.406  1.0
  Br  Br23  1  0.067  0.774  0.594  1.0
[/CIF]
.