data_global
_amcsd_formula_title 'KAlF4'
loop_
_publ_author_name
'Launay J'
'Bulou A'
'Hewat A'
'Gibaud A'
'Laval J'
'Nouet J'
_journal_name_full 'Journal de Physique'
_journal_volume 46 
_journal_year 1985
_journal_page_first 771
_journal_page_last 782
_publ_section_title
;
 Shear transformation in the layered compound KAlF4: low temperature
 phase structure and transformation mechanism
 _cod_database_code 1000208
;
_database_code_amcsd 0012761
_chemical_formula_sum 'Al K F4'
_cell_length_a 7.3403
_cell_length_b 7.2370
_cell_length_c 6.4070
_cell_angle_alpha 90
_cell_angle_beta 106.801
_cell_angle_gamma 90
_cell_volume 325.823
_exptl_crystal_density_diffrn      2.896
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Al1   0.00000   0.00000   0.00000
Al2   0.50000   0.00000   0.00000
K1   0.13100   0.25000   0.54100
K2   0.63300   0.25000   0.54400
F1   0.25810  -0.02050   0.00770
F2   0.02900   0.25000   0.05100
F3   0.48740   0.25000   0.04400
F4   0.07120  -0.03700   0.28360
F5   0.57380  -0.03610   0.28400