#------------------------------------------------------------------------------
#$Date: 2008-01-14 00:15:36 +0200 (Mon, 14 Jan 2008) $
#$Revision: 14 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/1001165.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1001165
_chemical_name_systematic
;
Oxonium tantalum tungsten oxide (1.8/1.8/.2/5.2)
;
_chemical_formula_structural       'H1.80 (H2 O) Ta1.80 W.20 O6'
_chemical_formula_sum              'H3.8 O7 Ta1.8 W.2'
_publ_section_title
;
Proprietes d'echanges d'ions de quelques oxydes ternaires de type
pyrochlore: les pyrochlores H~1+x~ (H~2~ O) Ta~1+x~ W~1-x~ O~6~ et N
H~4~ Ta W O~6~
;
loop_
_publ_author_name
  'Hervieu, M'
  'Michel, C'
  'Raveau, B'
_journal_name_full
;
Bulletin de la Societe Chimique de France (Vol=Year)
;
_journal_coden_ASTM                BSCFAS
_journal_volume                    1971
_journal_year                      1971
_journal_page_first                3939
_journal_page_last                 3943
_cell_length_a                     10.55
_cell_length_b                     10.55
_cell_length_c                     10.55
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       1174.2
_cell_formula_units_Z              8
_exptl_crystal_density_meas        5.4
_symmetry_space_group_name_H-M     'F d -3 m Z'
_symmetry_Int_Tables_number        227
_symmetry_cell_setting             cubic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,1/4-y,1/4-z'
  '1/4-x,y,1/4-z'
  '1/4-x,1/4-y,z'
  'y,z,x'
  '1/4-y,1/4-z,x'
  'y,1/4-z,1/4-x'
  '1/4-y,z,1/4-x'
  'z,x,y'
  '1/4-z,x,1/4-y'
  '1/4-z,1/4-x,y'
  'z,1/4-x,1/4-y'
  'x,z,y'
  'x,1/4-z,1/4-y'
  '1/4-x,1/4-z,y'
  '1/4-x,z,1/4-y'
  'y,x,z'
  '1/4-y,x,1/4-z'
  'y,1/4-x,1/4-z'
  '1/4-y,1/4-x,z'
  'z,y,x'
  '1/4-z,1/4-y,x'
  '1/4-z,y,1/4-x'
  'z,1/4-y,1/4-x'
  '-x,-y,-z'
  '-x,3/4+y,3/4+z'
  '3/4+x,-y,3/4+z'
  '3/4+x,3/4+y,-z'
  '-y,-z,-x'
  '3/4+y,3/4+z,-x'
  '-y,3/4+z,3/4+x'
  '3/4+y,-z,3/4+x'
  '-z,-x,-y'
  '3/4+z,-x,3/4+y'
  '3/4+z,3/4+x,-y'
  '-z,3/4+x,3/4+y'
  '-x,-z,-y'
  '-x,3/4+z,3/4+y'
  '3/4+x,3/4+z,-y'
  '3/4+x,-z,3/4+y'
  '-y,-x,-z'
  '3/4+y,-x,3/4+z'
  '-y,3/4+x,3/4+z'
  '3/4+y,3/4+x,-z'
  '-z,-y,-x'
  '3/4+z,3/4+y,-x'
  '3/4+z,-y,3/4+x'
  '-z,3/4+y,3/4+x'
  'x,1/2+y,1/2+z'
  '1/2+x,y,1/2+z'
  '1/2+x,1/2+y,z'
  'x,3/4-y,3/4-z'
  '1/2+x,1/4-y,3/4-z'
  '1/2+x,3/4-y,1/4-z'
  '1/4-x,1/2+y,3/4-z'
  '3/4-x,y,3/4-z'
  '3/4-x,1/2+y,1/4-z'
  '1/4-x,3/4-y,1/2+z'
  '3/4-x,1/4-y,1/2+z'
  '3/4-x,3/4-y,z'
  'y,1/2+z,1/2+x'
  '1/2+y,z,1/2+x'
  '1/2+y,1/2+z,x'
  '1/4-y,3/4-z,1/2+x'
  '3/4-y,1/4-z,1/2+x'
  '3/4-y,3/4-z,x'
  'y,3/4-z,3/4-x'
  '1/2+y,1/4-z,3/4-x'
  '1/2+y,3/4-z,1/4-x'
  '1/4-y,1/2+z,3/4-x'
  '3/4-y,z,3/4-x'
  '3/4-y,1/2+z,1/4-x'
  'z,1/2+x,1/2+y'
  '1/2+z,x,1/2+y'
  '1/2+z,1/2+x,y'
  '1/4-z,1/2+x,3/4-y'
  '3/4-z,x,3/4-y'
  '3/4-z,1/2+x,1/4-y'
  '1/4-z,3/4-x,1/2+y'
  '3/4-z,1/4-x,1/2+y'
  '3/4-z,3/4-x,y'
  'z,3/4-x,3/4-y'
  '1/2+z,1/4-x,3/4-y'
  '1/2+z,3/4-x,1/4-y'
  'x,1/2+z,1/2+y'
  '1/2+x,z,1/2+y'
  '1/2+x,1/2+z,y'
  'x,3/4-z,3/4-y'
  '1/2+x,1/4-z,3/4-y'
  '1/2+x,3/4-z,1/4-y'
  '1/4-x,3/4-z,1/2+y'
  '3/4-x,1/4-z,1/2+y'
  '3/4-x,3/4-z,y'
  '1/4-x,1/2+z,3/4-y'
  '3/4-x,z,3/4-y'
  '3/4-x,1/2+z,1/4-y'
  'y,1/2+x,1/2+z'
  '1/2+y,x,1/2+z'
  '1/2+y,1/2+x,z'
  '1/4-y,1/2+x,3/4-z'
  '3/4-y,x,3/4-z'
  '3/4-y,1/2+x,1/4-z'
  'y,3/4-x,3/4-z'
  '1/2+y,1/4-x,3/4-z'
  '1/2+y,3/4-x,1/4-z'
  '1/4-y,3/4-x,1/2+z'
  '3/4-y,1/4-x,1/2+z'
  '3/4-y,3/4-x,z'
  'z,1/2+y,1/2+x'
  '1/2+z,y,1/2+x'
  '1/2+z,1/2+y,x'
  '1/4-z,3/4-y,1/2+x'
  '3/4-z,1/4-y,1/2+x'
  '3/4-z,3/4-y,x'
  '1/4-z,1/2+y,3/4-x'
  '3/4-z,y,3/4-x'
  '3/4-z,1/2+y,1/4-x'
  'z,3/4-y,3/4-x'
  '1/2+z,1/4-y,3/4-x'
  '1/2+z,3/4-y,1/4-x'
  '-x,1/2-y,1/2-z'
  '1/2-x,-y,1/2-z'
  '1/2-x,1/2-y,-z'
  '-x,1/4+y,1/4+z'
  '1/2-x,3/4+y,1/4+z'
  '1/2-x,1/4+y,3/4+z'
  '3/4+x,1/2-y,1/4+z'
  '1/4+x,-y,1/4+z'
  '1/4+x,1/2-y,3/4+z'
  '3/4+x,1/4+y,1/2-z'
  '1/4+x,3/4+y,1/2-z'
  '1/4+x,1/4+y,-z'
  '-y,1/2-z,1/2-x'
  '1/2-y,-z,1/2-x'
  '1/2-y,1/2-z,-x'
  '3/4+y,1/4+z,1/2-x'
  '1/4+y,3/4+z,1/2-x'
  '1/4+y,1/4+z,-x'
  '-y,1/4+z,1/4+x'
  '1/2-y,3/4+z,1/4+x'
  '1/2-y,1/4+z,3/4+x'
  '3/4+y,1/2-z,1/4+x'
  '1/4+y,-z,1/4+x'
  '1/4+y,1/2-z,3/4+x'
  '-z,1/2-x,1/2-y'
  '1/2-z,-x,1/2-y'
  '1/2-z,1/2-x,-y'
  '3/4+z,1/2-x,1/4+y'
  '1/4+z,-x,1/4+y'
  '1/4+z,1/2-x,3/4+y'
  '3/4+z,1/4+x,1/2-y'
  '1/4+z,3/4+x,1/2-y'
  '1/4+z,1/4+x,-y'
  '-z,1/4+x,1/4+y'
  '1/2-z,3/4+x,1/4+y'
  '1/2-z,1/4+x,3/4+y'
  '-x,1/2-z,1/2-y'
  '1/2-x,-z,1/2-y'
  '1/2-x,1/2-z,-y'
  '-x,1/4+z,1/4+y'
  '1/2-x,3/4+z,1/4+y'
  '1/2-x,1/4+z,3/4+y'
  '3/4+x,1/4+z,1/2-y'
  '1/4+x,3/4+z,1/2-y'
  '1/4+x,1/4+z,-y'
  '3/4+x,1/2-z,1/4+y'
  '1/4+x,-z,1/4+y'
  '1/4+x,1/2-z,3/4+y'
  '-y,1/2-x,1/2-z'
  '1/2-y,-x,1/2-z'
  '1/2-y,1/2-x,-z'
  '3/4+y,1/2-x,1/4+z'
  '1/4+y,-x,1/4+z'
  '1/4+y,1/2-x,3/4+z'
  '-y,1/4+x,1/4+z'
  '1/2-y,3/4+x,1/4+z'
  '1/2-y,1/4+x,3/4+z'
  '3/4+y,1/4+x,1/2-z'
  '1/4+y,3/4+x,1/2-z'
  '1/4+y,1/4+x,-z'
  '-z,1/2-y,1/2-x'
  '1/2-z,-y,1/2-x'
  '1/2-z,1/2-y,-x'
  '3/4+z,1/4+y,1/2-x'
  '1/4+z,3/4+y,1/2-x'
  '1/4+z,1/4+y,-x'
  '3/4+z,1/2-y,1/4+x'
  '1/4+z,-y,1/4+x'
  '1/4+z,1/2-y,3/4+x'
  '-z,1/4+y,1/4+x'
  '1/2-z,3/4+y,1/4+x'
  '1/2-z,1/4+y,3/4+x'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Ta5+   5.000
  W6+    6.000
  O2-   -2.000
  H1+    1.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  Ta1   Ta5+  16 d 0.5 0.5 0.5 0.9  0 d
  W1    W6+   16 d 0.5 0.5 0.5 0.1  0 d
  O1    O2-   48 f 0.435 0.125 0.125 1.  0 d
  O2    O2-    8 a 0.125 0.125 0.125 1.  2 d
  H1    H1+    8 a -1. -1. -1. 3.8  0 dum
_refine_ls_R_factor_all            0.091