data_global
_amcsd_formula_title 'As6 K6 Na4 Sn2'
loop_
_publ_author_name
'Eisenmann B'
'Klein J'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 196 
_journal_year 1991
_journal_page_first 213
_journal_page_last 229
_publ_section_title
;
 Dimere Zintl-Anionen (Sn2 As6)10- und (Sn2 Sb6)10- in Alkaliverbindungen
 _cod_database_code 1008873
;
_database_code_amcsd 0016740
_chemical_formula_sum 'Sn As3 Na2 K3'
_cell_length_a 20.435
_cell_length_b 6.820
_cell_length_c 15.351
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2139.418
_exptl_crystal_density_diffrn      3.147
_symmetry_space_group_name_H-M 'C m c a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,1/2-y,1/2+z'
  '1/2+x,-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2-x,+y,1/2-z'
  '-x,y,z'
  '1/2-x,1/2+y,z'
  'x,-y,-z'
  '1/2+x,1/2-y,-z'
  'x,1/2+y,1/2-z'
  '1/2+x,+y,1/2-z'
  '-x,1/2-y,1/2+z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Sn1   0.41170   0.00000   0.00000
As1   0.00000   0.20360   0.59490
As2   0.34190   0.27860   0.60570
Na1   0.08080   0.00000   0.00000
Na2   0.24460   0.00000   0.00000
K1   0.00000   0.26040   0.32030
K2   0.66600   0.73070   0.17580
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
Sn1 0.01030 0.01040 0.01070 0.00000 0.00000 0.00020
As1 0.01230 0.01420 0.01510 0.00000 0.00000 -0.00250
As2 0.01460 0.01440 0.01450 -0.00100 0.00180 0.00250
Na1 0.02410 0.01370 0.02490 0.00000 0.00000 0.00040
Na2 0.02170 0.02560 0.02310 0.00000 0.00000 -0.00450
K1 0.02500 0.03810 0.03010 0.00000 0.00000 0.00610
K2 0.03920 0.02930 0.02310 0.00200 -0.00180 0.00260