data_1004114
_chemical_name_systematic          'Disilver bis(dioxouranium(VI)) divanadate'
_chemical_name_mineral             'Carnotite (Ag)'
_chemical_compound_source          'artificial'
_chemical_formula_structural       'Ag2 (U O2)2 (V2 O8)'
_chemical_formula_sum              'Ag2 O12 U2 V2'
_publ_section_title
;
Ag2 (U O2)2 V2 O8 : a new compound with the carnotite structure.
Synthesis, structure and properties
;
loop_
_publ_author_name
  'Abraham, F'
  'Dion, C'
  'Tancret, N'
  'Saadi, M'
_journal_name_full                 'Advanced Materials Research'
_journal_coden_ASTM                AMREFI
_journal_volume                    1
_journal_year                      1994
_journal_page_first                511
_journal_page_last                 520
_cell_length_a                     5.8952(2)
_cell_length_b                     8.3541(2)
_cell_length_c                     10.4142(3)
_cell_angle_alpha                  90
_cell_angle_beta                   100.56(1)
_cell_angle_gamma                  90
_cell_volume                       504.2
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'P 1 21/c 1'
_symmetry_Int_Tables_number        14
_symmetry_cell_setting             monoclinic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
  'x,1/2-y,1/2+z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  U6+    6.000
  V5+    5.000
  Ag1+   1.000
  O2-   -2.000
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
  U1    U6+    4 e -0.0178(5) 0.0214(3) 0.1823(3) 1.  0 d
  V1    V5+    4 e 0.1351(23) 0.3500(15) 0.0408(12) 1.  0 d
  Ag1   Ag1+   4 e 0.5405(10) 0.2234(6) 0.3360(6) 1.  0 d
  O1    O2-    4 e 0.056(6) 0.148(4) 0.010(4) 1.  0 d
  O2    O2-    4 e 0.406(7) 0.355(4) 0.033(4) 1.  0 d
  O3    O2-    4 e 0.663(6) 0.081(4) 0.143(4) 1.  0 d
  O4    O2-    4 e 0.143(6) 0.287(4) 0.204(4) 1.  0 d
  O5    O2-    4 e 0.278(6) -0.041(5) 0.226(3) 1.  0 d
  O6    O2-    4 e -0.090(6) 0.436(5) -0.099(4) 1.  0 d
_refine_ls_R_factor_all            0.05