The structure described by RbTlBr3 is (Cubic) Perovskite structured and crystallizes in the monoclinic Cm space group. Rb(1) is bonded in a 12-coordinate geometry to four equivalent Br(2) and eight equivalent Br(1) atoms. Tl(1) is bonded to two equivalent Br(2) and four equivalent Br(1) atoms to form corner-sharing TlBr6 octahedra. The corner-sharing octahedral tilt angles range from 1-4°. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent Tl(1) atoms. In the second Br site, Br(2) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent Tl(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbTlBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.836
_cell_length_b   5.836
_cell_length_c   5.833
_cell_angle_alpha   89.966
_cell_angle_beta   89.966
_cell_angle_gamma   90.007
_symmetry_Int_Tables_number   1
_cell_volume   198.670
_cell_formula_units_Z   1
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  0.997  0.997  0.001  1.0
  Tl  Tl1  1  0.495  0.495  0.517  1.0
  Br  Br2  1  0.999  0.496  0.515  1.0
  Br  Br3  1  0.509  0.509  0.016  1.0
  Br  Br4  1  0.496  0.999  0.515  1.0
[/CIF]
.
The structure described by RbTlBr3 is (Cubic) Perovskite structured and crystallizes in the monoclinic Cm space group. Rb(1) is bonded in a 12-coordinate geometry to four equivalent Br(2) and eight equivalent Br(1) atoms. Tl(1) is bonded to two equivalent Br(2) and four equivalent Br(1) atoms to form corner-sharing TlBr6 octahedra. The corner-sharing octahedral tilt angles range from 1-4°. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent Tl(1) atoms. In the second Br site, Br(2) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent Tl(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbTlBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.836
_cell_length_b   5.836
_cell_length_c   5.833
_cell_angle_alpha   89.966
_cell_angle_beta   89.966
_cell_angle_gamma   90.007
_symmetry_Int_Tables_number   1
_cell_volume   198.670
_cell_formula_units_Z   1
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  0.997  0.997  0.001  1.0
  Tl  Tl1  1  0.495  0.495  0.517  1.0
  Br  Br2  1  0.999  0.496  0.515  1.0
  Br  Br3  1  0.509  0.509  0.016  1.0
  Br  Br4  1  0.496  0.999  0.515  1.0
[/CIF]
.