#------------------------------------------------------------------------------
#$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: svn://www.crystallography.net/cod/cif/2/2000504.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_2000504
_journal_name_full  'Acta Cryst.'
_journal_year  1992
_journal_volume  C48
_journal_page_first  1744
_journal_page_last  1747
loop_
_publ_author_name
 'Leclaire, A.'
 'Borel, M.M.'
 'Chardon, J.'
 'Grandin, A.'
 'Raveau, B.'
_chemical_formula_sum  'K4 Nb8 O34 P4 Si1'
_chemical_formula_weight  1595.6
_symmetry_cell_setting  tetragonal
_symmetry_space_group_name_H-M  'P -4 m 2'
_symmetry_space_group_name_Hall  'P -4 -2'
_cell_length_a  10.6050(9)
_cell_length_b  10.6050(9)
_cell_length_c  6.4099(5)
_cell_angle_alpha  90.
_cell_angle_beta  90.
_cell_angle_gamma  90.
_cell_volume  720.90(10)
_cell_formula_units_Z  1
_exptl_crystal_density_diffrn  3.67
_exptl_crystal_density_meas  ?
_exptl_crystal_F_000  750
_exptl_absorpt_coefficient_mu  3.90
_diffrn_radiation_type  Mo
_diffrn_radiation_wavelength  0.71073
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
 Nb(1) .500 .18470(10)
      .20350(10)
 Nb(2) .17750(5) .178 .000
 Si .500 .500 .000
 P .23970(10)
      .240 .500
 K(1) .000 .000 .500
 K(2) .000 .500 .2923(8)
 K(3) .500 .500 .500
 O(1) .500 .000 .261(2)
 O(2) .3638(4) .1747(5) .0215(8)
 O(3) .3790(4) .2154(5) .4530(7)
 O(4) .500 .3819(7) .1450(10)
 O(5) .1756(8) .000 .0320(10)
 O(6) .1586(4) .1982(4) .3115(6)