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#$Date: 2016-02-14 06:40:26 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176432 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/31/00/2310011.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2310011
loop_
_publ_author_name
'Katz, L.'
'Megaw, H. D.'
_publ_section_title
;
 The structure of potassium niobate at room temperature: the solution of a
 pseudosymmetric structure by Fourier methods
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica'
_journal_page_first              639
_journal_paper_doi               10.1107/S0365110X6700129X
_journal_volume                  22
_journal_year                    1967
_chemical_formula_sum            'K Nb O3'
_chemical_formula_weight         180.00
_space_group_IT_number           38
_symmetry_Int_Tables_number      38
_symmetry_space_group_name_Hall  'B 2 -2'
_symmetry_space_group_name_H-M   'B m m 2'
_audit_creation_date             2013-03-25
_audit_creation_method
'Created with CONVERT.DLL (www.crystalimpact.com)'
_audit_update_record             2013-03-25
_cell_angle_alpha                90.000
_cell_angle_beta                 90.000
_cell_angle_gamma                90.000
_cell_formula_units_Z            2
_cell_length_a                   5.6970
_cell_length_b                   3.9710
_cell_length_c                   5.7200
_cell_volume                     129.402
_cod_data_source_file            KNbO3-KatzandMegaw1967.cif
_cod_data_source_block           KNbO3_Orthorhombic
_cod_original_cell_volume        129.4
_cod_original_sg_symbol_Hall     B_2_-2
_cod_original_formula_sum        'Nb K O3'
_cod_database_code               2310011
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 x,y,z
2 -x,-y,z
3 -x,y,z
4 x,-y,z
5 1/2+x,y,1/2+z
6 1/2-x,-y,1/2+z
7 1/2-x,y,1/2+z
8 1/2+x,-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_calc_flag
Nb1 Nb 0.0000 0.0000 0.0000 1.000 d
K1 K 0.0000 0.5000 0.5170 1.000 d
O1 O 0.0000 0.5000 0.0210 1.000 d
O2 O 0.2540 0.0000 0.2850 1.000 d
loop_
_atom_type_symbol
_atom_type_number_in_cell
Nb 2.0
K 2.0
O 6.0