#------------------------------------------------------------------------------
#$Date: 2016-02-18 17:37:37 +0200 (Thu, 18 Feb 2016) $
#$Revision: 176729 $
#$URL: svn://www.crystallography.net/cod/cif/1/00/17/1001777.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_1001777
loop_
_publ_author_name
'Gasperin, M'
_publ_section_title
;
Synthese et identification d'un oxyde double de tantale et d'uranium.
;
_journal_coden_ASTM              COREAF
_journal_name_full
;
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences
(1884 - 1965)
;
_journal_page_first              1534
_journal_page_last               1536
_journal_volume                  243
_journal_year                    1956
_chemical_compound_source
;
synthetic by heating U Ta2 O8 at 1973 K for 30 min
;
_chemical_formula_structural     'U2 (Ta2 O7)'
_chemical_formula_sum            'O7 Ta2 U2'
_chemical_name_mineral           Uranmicrolite
_chemical_name_systematic        'Diuranium ditantalate(III)'
_space_group_IT_number           227
_symmetry_cell_setting           cubic
_symmetry_space_group_name_Hall  'F 4d 2 3 -1d'
_symmetry_space_group_name_H-M   'F d -3 m :1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   10.37
_cell_length_b                   10.37
_cell_length_c                   10.37
_cell_volume                     1115.2
_exptl_crystal_thermal_history   'heating U Ta2 O8 at 1973 K for 30 min'
_cod_original_sg_symbol_H-M      'F d -3 m S'
_cod_database_code               1001777
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
y,z,x
z,x,y
x,z,y
y,x,z
z,y,x
x,-y,-z
y,-z,-x
z,-x,-y
x,-z,-y
y,-x,-z
z,-y,-x
-x,y,-z
-y,z,-x
-z,x,-y
-x,z,-y
-y,x,-z
-z,y,-x
-x,-y,z
-y,-z,x
-z,-x,y
-x,-z,y
-y,-x,z
-z,-y,x
1/4-x,1/4-y,1/4-z
1/4-y,1/4-z,1/4-x
1/4-z,1/4-x,1/4-y
1/4-x,1/4-z,1/4-y
1/4-y,1/4-x,1/4-z
1/4-z,1/4-y,1/4-x
1/4-x,1/4+y,1/4+z
1/4-y,1/4+z,1/4+x
1/4-z,1/4+x,1/4+y
1/4-x,1/4+z,1/4+y
1/4-y,1/4+x,1/4+z
1/4-z,1/4+y,1/4+x
1/4+x,1/4-y,1/4+z
1/4+y,1/4-z,1/4+x
1/4+z,1/4-x,1/4+y
1/4+x,1/4-z,1/4+y
1/4+y,1/4-x,1/4+z
1/4+z,1/4-y,1/4+x
1/4+x,1/4+y,1/4-z
1/4+y,1/4+z,1/4-x
1/4+z,1/4+x,1/4-y
1/4+x,1/4+z,1/4-y
1/4+y,1/4+x,1/4-z
1/4+z,1/4+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
y,1/2+z,1/2+x
1/2+y,z,1/2+x
1/2+y,1/2+z,x
z,1/2+x,1/2+y
1/2+z,x,1/2+y
1/2+z,1/2+x,y
x,1/2+z,1/2+y
1/2+x,z,1/2+y
1/2+x,1/2+z,y
y,1/2+x,1/2+z
1/2+y,x,1/2+z
1/2+y,1/2+x,z
z,1/2+y,1/2+x
1/2+z,y,1/2+x
1/2+z,1/2+y,x
x,1/2-y,1/2-z
1/2+x,-y,1/2-z
1/2+x,1/2-y,-z
y,1/2-z,1/2-x
1/2+y,-z,1/2-x
1/2+y,1/2-z,-x
z,1/2-x,1/2-y
1/2+z,-x,1/2-y
1/2+z,1/2-x,-y
x,1/2-z,1/2-y
1/2+x,-z,1/2-y
1/2+x,1/2-z,-y
y,1/2-x,1/2-z
1/2+y,-x,1/2-z
1/2+y,1/2-x,-z
z,1/2-y,1/2-x
1/2+z,-y,1/2-x
1/2+z,1/2-y,-x
-x,1/2+y,1/2-z
1/2-x,y,1/2-z
1/2-x,1/2+y,-z
-y,1/2+z,1/2-x
1/2-y,z,1/2-x
1/2-y,1/2+z,-x
-z,1/2+x,1/2-y
1/2-z,x,1/2-y
1/2-z,1/2+x,-y
-x,1/2+z,1/2-y
1/2-x,z,1/2-y
1/2-x,1/2+z,-y
-y,1/2+x,1/2-z
1/2-y,x,1/2-z
1/2-y,1/2+x,-z
-z,1/2+y,1/2-x
1/2-z,y,1/2-x
1/2-z,1/2+y,-x
-x,1/2-y,1/2+z
1/2-x,-y,1/2+z
1/2-x,1/2-y,z
-y,1/2-z,1/2+x
1/2-y,-z,1/2+x
1/2-y,1/2-z,x
-z,1/2-x,1/2+y
1/2-z,-x,1/2+y
1/2-z,1/2-x,y
-x,1/2-z,1/2+y
1/2-x,-z,1/2+y
1/2-x,1/2-z,y
-y,1/2-x,1/2+z
1/2-y,-x,1/2+z
1/2-y,1/2-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-x,3/4-y,3/4-z
3/4-x,1/4-y,3/4-z
3/4-x,3/4-y,1/4-z
1/4-y,3/4-z,3/4-x
3/4-y,1/4-z,3/4-x
3/4-y,3/4-z,1/4-x
1/4-z,3/4-x,3/4-y
3/4-z,1/4-x,3/4-y
3/4-z,3/4-x,1/4-y
1/4-x,3/4-z,3/4-y
3/4-x,1/4-z,3/4-y
3/4-x,3/4-z,1/4-y
1/4-y,3/4-x,3/4-z
3/4-y,1/4-x,3/4-z
3/4-y,3/4-x,1/4-z
1/4-z,3/4-y,3/4-x
3/4-z,1/4-y,3/4-x
3/4-z,3/4-y,1/4-x
1/4-x,3/4+y,3/4+z
3/4-x,1/4+y,3/4+z
3/4-x,3/4+y,1/4+z
1/4-y,3/4+z,3/4+x
3/4-y,1/4+z,3/4+x
3/4-y,3/4+z,1/4+x
1/4-z,3/4+x,3/4+y
3/4-z,1/4+x,3/4+y
3/4-z,3/4+x,1/4+y
1/4-x,3/4+z,3/4+y
3/4-x,1/4+z,3/4+y
3/4-x,3/4+z,1/4+y
1/4-y,3/4+x,3/4+z
3/4-y,1/4+x,3/4+z
3/4-y,3/4+x,1/4+z
1/4-z,3/4+y,3/4+x
3/4-z,1/4+y,3/4+x
3/4-z,3/4+y,1/4+x
1/4+x,3/4-y,3/4+z
3/4+x,1/4-y,3/4+z
3/4+x,3/4-y,1/4+z
1/4+y,3/4-z,3/4+x
3/4+y,1/4-z,3/4+x
3/4+y,3/4-z,1/4+x
1/4+z,3/4-x,3/4+y
3/4+z,1/4-x,3/4+y
3/4+z,3/4-x,1/4+y
1/4+x,3/4-z,3/4+y
3/4+x,1/4-z,3/4+y
3/4+x,3/4-z,1/4+y
1/4+y,3/4-x,3/4+z
3/4+y,1/4-x,3/4+z
3/4+y,3/4-x,1/4+z
1/4+z,3/4-y,3/4+x
3/4+z,1/4-y,3/4+x
3/4+z,3/4-y,1/4+x
1/4+x,3/4+y,3/4-z
3/4+x,1/4+y,3/4-z
3/4+x,3/4+y,1/4-z
1/4+y,3/4+z,3/4-x
3/4+y,1/4+z,3/4-x
3/4+y,3/4+z,1/4-x
1/4+z,3/4+x,3/4-y
3/4+z,1/4+x,3/4-y
3/4+z,3/4+x,1/4-y
1/4+x,3/4+z,3/4-y
3/4+x,1/4+z,3/4-y
3/4+x,3/4+z,1/4-y
1/4+y,3/4+x,3/4-z
3/4+y,1/4+x,3/4-z
3/4+y,3/4+x,1/4-z
1/4+z,3/4+y,3/4-x
3/4+z,1/4+y,3/4-x
3/4+z,3/4+y,1/4-x
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 Ta3+ 16 c 0.125 0.125 0.125 1. 0 d
U1 U4+ 16 d 0.625 0.625 0.625 1. 0 d
O1 O2- 8 b 0.5 0.5 0.5 1. 0 d
O2 O2- 48 f 0.20(1) 0. 0. 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Ta3+ 3.000
U4+ 4.000
O2- -2.000
