#------------------------------------------------------------------------------
#$Date: 2009-04-21 15:31:11 +0100 (Tue, 21 Apr 2009) $
#$Revision: 665 $
#$URL: svn://www.crystallography.net/cod/cif/2/2000504.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_2000504
loop_
_publ_author_name
'Leclaire, A.'
'Borel, M. M.'
'Chardon, J.'
'Grandin, A.'
'Raveau, B.'
_publ_section_title
;
 A niobium silicophosphate belonging to the niobium phosphate bronze
 series: K~4~Nb~8~P~4~SiO~34~
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1744
_journal_page_last               1747
_journal_volume                  48
_journal_year                    1992
_chemical_formula_sum            'K4 Nb8 O34 P4 Si1'
_chemical_formula_weight         1595.6
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P -4 -2'
_symmetry_space_group_name_H-M   'P -4 m 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   10.6050(9)
_cell_length_b                   10.6050(9)
_cell_length_c                   6.4099(5)
_cell_volume                     720.90(10)
_diffrn_radiation_type           Mo
_diffrn_radiation_wavelength     0.71073
_exptl_absorpt_coefficient_mu    3.90
_exptl_crystal_density_diffrn    3.67
_exptl_crystal_F_000             750
_[local]_cod_data_source_file    du0309.cif
_[local]_cod_data_source_block   du0309a
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)