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#$Date: 2016-01-03 14:04:25 +0200 (Sun, 03 Jan 2016) $
#$Revision: 173268 $
#$URL: svn://www.crystallography.net/cod/cif/2/10/73/2107366.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_2107366
loop_
_publ_author_name
'Krogh-Moe, J.'
_publ_section_title
;
 The crystal structure of potassium biborate, K2 O (B2 O3)2
;
_journal_name_full               'Acta Crystallographica B (24,1968-38,1982)'
_journal_page_first              3089
_journal_page_last               3093
_journal_volume                  28
_journal_year                    1972
_chemical_formula_sum            'B4 K2 O7'
_chemical_name_systematic        'K2 O (B2 O3)2'
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                89.28
_cell_angle_beta                 102.75
_cell_angle_gamma                101.25
_cell_formula_units_Z            4
_cell_length_a                   6.484
_cell_length_b                   9.604
_cell_length_c                   10.413
_cell_volume                     619.985
_citation_journal_id_ASTM        ACBCAR
_cod_data_source_file            Krogh-Moe_ACBCAR_1972_643.cif
_cod_data_source_block           B4K2O7
_cod_original_cell_volume        619.9852
_cod_database_code               2107366
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,-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
B2 B+3 0.1161 0.2978 0.3157 1 0.0
K3 K+1 0.78763 0.37426 0.49741 1 0.0
O6 O-2 0.3197 0.3206 0.4147 1 0.0
O8 O-2 0.3238 0.0121 0.6775 1 0.0
O3 O-2 0.829 0.3455 0.0866 1 0.0
O5 O-2 0.9554 0.1833 0.361 1 0.0
O7 O-2 0.0251 0.431 0.3019 1 0.0
O2 O-2 0.7982 0.0985 0.1379 1 0.0
B6 B+3 0.8747 0.4434 0.1881 1 0.0
B4 B+3 0.1866 0.3137 0.7492 1 0.0
K2 K+1 0.33614 0.52003 0.12554 1 0.0
O11 O-2 0.2331 0.4467 0.8306 1 0.0
O14 O-2 0.9593 0.2381 0.7407 1 0.0
O12 O-2 0.4881 0.23 0.6102 1 0.0
K4 K+1 0.24917 0.99876 0.40714 1 0.0
O1 O-2 0.9884 0.1977 0.9686 1 0.0
K1 K+1 0.36944 0.12491 0.04138 1 0.0
B8 B+3 0.3315 0.3 0.5461 1 0.0
O10 O-2 0.3447 0.2313 0.8057 1 0.0
B1 B+3 0.9431 0.2228 0.0945 1 0.0
O13 O-2 0.1966 0.3501 0.6101 1 0.0
B5 B+3 0.8088 0.0888 0.2704 1 0.0
B7 B+3 0.8668 0.1925 0.8438 1 0.0
O9 O-2 0.6519 0.1313 0.819 1 0.0
O4 O-2 0.149 0.2554 0.1907 1 0.0
B3 B+3 0.4502 0.1547 0.7321 1 0.0
