data_global
_amcsd_formula_title 'Al F4 Rb'
loop_
_publ_author_name
'Bulou A'
'Nouet J'
_journal_name_full 'Journal of Physics C: Solid State Physics'
_journal_volume 15 
_journal_year 1982
_journal_page_first 183
_journal_page_last 196
_publ_section_title
;
 Structural phase transitions in ferroelastic Rb al F4: I. DSC, x-ray
 powder diffraction investigations and neutron powder profile refinement
 of the structures
 _cod_database_code 1000453
;
_database_code_amcsd 0013168
_chemical_formula_sum 'Rb Al F4'
_cell_length_a 3.6586
_cell_length_b 3.6586
_cell_length_c 6.3061
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 84.409
_exptl_crystal_density_diffrn      3.707
_symmetry_space_group_name_H-M 'P 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x,-z'
  '-y,x,z'
  'x,-y,z'
  '-x,y,-z'
  'x,y,-z'
  '-x,-y,z'
  'y,x,z'
  '-y,-x,-z'
  '-y,x,-z'
  'y,-x,z'
  '-x,y,z'
  'x,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Rb1   0.50000   0.50000   0.50000
Al1   0.00000   0.00000   0.00000
F1   0.50000   0.00000   0.00000
F2   0.00000   0.00000   0.27700