data_1008136
_chemical_name_systematic          'Gadolinium(II) chromate'
_chemical_formula_structural       'Gd Cr O4'
_chemical_formula_sum              'Cr Gd O4'
_publ_section_title
;
Etude cristallographique des composes T Cr O~4~ (T= terre rare ou Y)
;
loop_
_publ_author_name
  'Buisson, G'
  'Bertaut, F'
  'Mareschal, J'
_journal_name_full
;
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences
(1884 - 1965)
;
_journal_coden_ASTM                COREAF
_journal_volume                    259
_journal_year                      1964
_journal_page_first                411
_journal_page_last                 413
_cell_length_a                     7.204
_cell_length_b                     7.204
_cell_length_c                     6.315
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       327.7
_cell_formula_units_Z              4
_symmetry_space_group_name_H-M     'I 41/a m d S'
_symmetry_Int_Tables_number        141
_symmetry_cell_setting             tetragonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,z'
  'x,1/2+y,1/4-z'
  '-x,1/2-y,1/4-z'
  '-x,y,z'
  'x,-y,z'
  '-x,1/2+y,1/4-z'
  'x,1/2-y,1/4-z'
  'y,x,-z'
  '-y,-x,-z'
  'y,1/2+x,1/4+z'
  '-y,1/2-x,1/4+z'
  '-y,x,-z'
  'y,-x,-z'
  '-y,1/2+x,1/4+z'
  'y,1/2-x,1/4+z'
  '1/2+x,1/2+y,1/2+z'
  '1/2-x,1/2-y,1/2+z'
  '1/2+x,y,3/4-z'
  '1/2-x,-y,3/4-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,y,3/4-z'
  '1/2+x,-y,3/4-z'
  '1/2+y,1/2+x,1/2-z'
  '1/2-y,1/2-x,1/2-z'
  '1/2+y,x,3/4+z'
  '1/2-y,-x,3/4+z'
  '1/2-y,1/2+x,1/2-z'
  '1/2+y,1/2-x,1/2-z'
  '1/2-y,x,3/4+z'
  '1/2+y,-x,3/4+z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Gd2+   2.000
  Cr6+   6.000
  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
  Gd1   Gd2+   4 a 0. 0. 0. 1.  0 d
  Cr1   Cr6+   4 b 0. 0. 0.5 1.  0 d
  O1    O2-   16 h 0. 0.182 0.332 1.  0 d