
#(C) 2016 by FIZ Karlsruhe - Leibniz Institute for Information Infrastructure.  All rights reserved.
data_20314-ICSD
_database_code_ICSD 20314
_audit_creation_date 1980-01-01
_audit_update_record 2007-04-01
_chemical_name_systematic 'Tungsten dichromium(IV) oxide'
_chemical_formula_structural 'W Cr2 O6'
_chemical_formula_sum 'Cr2 O6 W1'
_chemical_name_structure_type ZnSb2O6
_exptl_crystal_density_diffrn 6.89
_publ_section_title

;
About the interaction between the trioxides of molybdenum and tungsten and
iron and chromium sesquioxides
;
loop_
_citation_id
_citation_journal_full
_citation_year
_citation_journal_volume
_citation_page_first
_citation_page_last
_citation_journal_id_ASTM
primary 'Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy' 1966 2 151 154
IVNMAW
loop_
_publ_author_name
'Trunov, V.K.'
'Kovba, L.M.'
_cell_length_a 4.571
_cell_length_b 4.571
_cell_length_c 8.853
_cell_angle_alpha 90.
_cell_angle_beta 90.
_cell_angle_gamma 90.
_cell_volume 184.97
_cell_formula_units_Z 2
_symmetry_space_group_name_H-M 'P 42/m n m'
_symmetry_Int_Tables_number 136
_refine_ls_R_factor_all 0.06
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 '-y+1/2, x+1/2, -z+1/2'
2 'y+1/2, -x+1/2, -z+1/2'
3 'y, x, -z'
4 '-y, -x, -z'
5 'y+1/2, -x+1/2, z+1/2'
6 '-y+1/2, x+1/2, z+1/2'
7 '-y, -x, z'
8 'y, x, z'
9 'x+1/2, -y+1/2, -z+1/2'
10 '-x+1/2, y+1/2, -z+1/2'
11 'x, y, -z'
12 '-x, -y, -z'
13 '-x+1/2, y+1/2, z+1/2'
14 'x+1/2, -y+1/2, z+1/2'
15 '-x, -y, z'
16 'x, y, z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
W6+ 6
Cr3+ 3
O2- -2
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_B_iso_or_equiv
_atom_site_occupancy
_atom_site_attached_hydrogens
W1 W6+ 2 a 0 0 0 . 1. 0
Cr1 Cr3+ 4 e 0 0 0.333 . 1. 0
O1 O2- 4 f 0.308 0.308 0 . 1. 0
O2 O2- 8 j 0.308 0.308 0.333 . 1. 0
#End of TTdata_20314-ICSD