#------------------------------------------------------------------------------
#$Date: 2012-02-28 14:14:52 +0200 (Tue, 28 Feb 2012) $
#$Revision: 35911 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/00/10/1001006.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_1001006
_chemical_name_systematic          'Diboron tripotassium tritantalum oxide'
_chemical_formula_structural       'B2 K3 Ta3 O12'
_chemical_formula_sum              'B2 K3 O12 Ta3'
_publ_section_title
;
Nouvelles structures a tunnels de section pentagonale K~3~ Nb~3~ B~2~
O~12~ et K~3~ Ta~3~ B~2~ O~12~
;
loop_
_publ_author_name
  'Choisnet, J'
  'Groult, D'
  'Raveau, B'
  'Gasperin, M'
_journal_name_full                 'Acta Crystallographica B (24,1968-38,1982)'
_journal_coden_ASTM                ACBCAR
_journal_volume                    33
_journal_year                      1977
_journal_page_first                1841
_journal_page_last                 1845
_cell_length_a                     8.775(5)
_cell_length_b                     8.775(5)
_cell_length_c                     3.897(1)
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  120
_cell_volume                       259.9
_cell_formula_units_Z              1
_exptl_crystal_density_meas        5.58
_symmetry_space_group_name_H-M     'P 3 1 m'
_symmetry_Int_Tables_number        157
_symmetry_cell_setting             trigonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-y,x-y,z'
  'y-x,-x,z'
  'y,x,z'
  '-x,y-x,z'
  'x-y,-y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
? ? ? ?
_cod_database_code 1001006