data_global
_chemical_name_mineral 'Avogadrite'
loop_
_publ_author_name
'Clark M J R'
'Lynton H'
_journal_name_full 'Canadian Journal of Chemistry'
_journal_volume 47 
_journal_year 1969
_journal_page_first 2579
_journal_page_last 2586
_publ_section_title
;
 Crystal structures of potassium, ammonium, rubidium and cesium tetrafluoroborates
;
_database_code_amcsd 0012154
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'K B F4'
_cell_length_a 7.032
_cell_length_b 8.674
_cell_length_c 5.496
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 335.232
_exptl_crystal_density_diffrn      2.495
_symmetry_space_group_name_H-M 'P b n m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
K   0.16134   0.18454   0.25000
B   0.68722   0.06322   0.25000
F1   0.60250  -0.08114   0.25000
F2   0.55756   0.17860   0.25000
F3   0.80416   0.07768   0.04457
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
K 0.02535 0.01955 0.03217 0.00207 0.00331 -0.00203
B 0.03367 0.01738 0.03018 0.00389 -0.03039 -0.01768
F1 0.05584 0.02573 0.05959 0.00646 -0.00360 -0.04048
F2 0.03284 0.04341 0.03894 0.00473 0.00170 0.02290
F3 0.03384 0.03690 0.02432 0.00442 0.01641 0.00256