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#$Date: 2015-09-12 21:58:33 +0300 (Sat, 12 Sep 2015) $
#$Revision: 156278 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/53/10/1531023.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_1531023
loop_
_publ_author_name
'Zid, M.F.'
'Jouini, T.'
'Omezzine, M.'
'Jouini, N.'
_publ_section_title
;
 Preparation et structure cristalline de K2 Nb2 As2 O11
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              337
_journal_page_last               342
_journal_volume                  74
_journal_year                    1988
_chemical_formula_sum            'As2 K2 Nb2 O11'
_chemical_name_systematic        'K2 Nb2 As2 O11'
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_cell_angle_alpha                90
_cell_angle_beta                 96.72
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.342
_cell_length_b                   10.446
_cell_length_c                   9.971
_cell_volume                     1069.792
_citation_journal_id_ASTM        JSSCBI
_cod_data_source_file            Zid_JSSCBI_1988_1629.cif
_cod_data_source_block           As2K2Nb2O11
_cod_cif_authors_sg_Hall         '-P 2ybc (z,y,-x)'
_cod_database_code               1531023
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_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Nb1 Nb+5 0.134 0.407 0.8541 1 0.0
O7 O-2 0.22 0.4731 0.0362 1 0.0
O9 O-2 0.1017 0.3093 0.6878 1 0.0
O5 O-2 0.0819 0.5547 0.793 1 0.0
K1 K+1 0.2948 0.2951 0.2604 1 0.0
O6 O-2 0.06 0.2382 0.4165 1 0.0
O3 O-2 0.4721 0.151 0.9249 1 0.0
K2 K+1 0 0.5 0.5 1 0.0
O4 O-2 0.2218 0.2277 0.9531 1 0.0
O11 O-2 0.2291 0.0367 0.46 1 0.0
O8 O-2 0.3258 0.4255 0.7937 1 0.0
As2 As+5 0.3558 0.4221 0.6317 1 0.0
O1 O-2 0.0155 0.057 0.6363 1 0.0
O10 O-2 0.3135 0.2847 0.55 1 0.0
O2 O-2 0.2788 0.0851 0.7238 1 0.0
Nb2 Nb+5 0.1471 0.1821 0.5654 1 0.0
As1 As+5 0.3113 0.1144 0.8891 1 0.0
K3 K+1 0.5072 0.4421 0.0082 0.5 0.0