#------------------------------------------------------------------------------
#$Date: 2010-01-30 15:59:17 +0200 (Sat, 30 Jan 2010) $
#$Revision: 966 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/1008462.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_1008462
_chemical_name_systematic
;
Decasodium di-$-mue-arsenido-bis(diarsenidosilicate)
;
_chemical_formula_structural       'Na10 Si2 As6'
_chemical_formula_sum              'As6 Na10 Si2'
_publ_section_title
;
Crystal structure of decasodium di-$-mue-arsenidobis(diarsenidosilicate)
;
loop_
_publ_author_name
  'Eisenmann, B'
  'Klein, J'
  'Somer, M'
_journal_name_full
;
Zeitschrift fuer Kristallographie (149,1979-)
;
_journal_coden_ASTM                ZEKRDZ
_journal_volume                    197
_journal_year                      1991
_journal_page_first                267
_journal_page_last                 268
_cell_length_a                     13.466(5)
_cell_length_b                     7.529(4)
_cell_length_c                     8.177(5)
_cell_angle_alpha                  90.(0)
_cell_angle_beta                   90.5(1)
_cell_angle_gamma                  90.(0)
_cell_volume                       829.0
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'P 1 21/n 1'
_symmetry_Int_Tables_number        14
_symmetry_cell_setting             monoclinic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2+y,1/2-z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Si4+   4.000
  As3-  -3.000
  Na1+   1.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  Si1   Si4+   4 e 0.08404(20) 0.13985(50) 0.42797(40) 1.  0 d
  As1   As3-   4 e 0.22363(10) 0.23354(20) 0.57967(20) 1.  0 d
  As2   As3-   4 e 0.07961(10) 0.26064(20) 0.15957(20) 1.  0 d
  As3   As3-   4 e 0.93378(10) 0.1824(2) 0.58552(20) 1.  0 d
  Na1   Na1+   4 e 0.74061(50) 0.15144(90) 0.42421(70) 1.  0 d
  Na2   Na1+   4 e 0.41886(50) 0.16464(90) 0.42139(80) 1.  0 d
  Na3   Na1+   4 e 0.08879(50) 0.0152(10) 0.82525(80) 1.  0 d
  Na4   Na1+   4 e 0.08406(60) 0.5310(11) 0.66517(90) 1.  0 d
  Na5   Na1+   4 e 0.25843(60) 0.9944(10) 0.18601(80) 1.  0 d
_refine_ls_R_factor_all            0.087
_cod_database_code 1008462