#------------------------------------------------------------------------------
#$Date: 2008-01-26 15:05:32 +0200 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/1008852.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_1008852
_chemical_name_systematic
;
Decasodium di-$-mue-arsenido-bis(diarsenidogermanate)
;
_chemical_formula_structural       'Na10 Ge2 As6'
_chemical_formula_sum              'As6 Ge2 Na10'
_publ_section_title
;
Crystal structure of decasodium di-$-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                265
_journal_page_last                 266
_cell_length_a                     13.531(5)
_cell_length_b                     7.544(4)
_cell_length_c                     8.298(5)
_cell_angle_alpha                  90
_cell_angle_beta                   90.2(1)
_cell_angle_gamma                  90
_cell_volume                       847.0
_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
  Ge4+   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
  Ge1   Ge4+   4 e 0.0863(1) 0.1427(2) 0.4281(1) 1.  0 d
  As1   As3-   4 e 0.2283(1) 0.2385(2) 0.5863(1) 1.  0 d
  As2   As3-   4 e 0.0808(1) 0.2631(2) 0.1540(1) 1.  0 d
  As3   As3-   4 e 0.9322(1) 0.1892(2) 0.5882(1) 1.  0 d
  Na1   Na1+   4 e 0.7410(4) 0.1480(8) 0.4254(7) 1.  0 d
  Na2   Na1+   4 e 0.4186(4) 0.1645(8) 0.4222(7) 1.  0 d
  Na3   Na1+   4 e 0.0880(5) 0.0155(9) 0.8264(8) 1.  0 d
  Na4   Na1+   4 e 0.0847(5) 0.5312(10) 0.6702(8) 1.  0 d
  Na5   Na1+   4 e 0.2586(5) 0.9954(9) 0.1807(7) 1.  0 d
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_22
_atom_site_aniso_U_23
_atom_site_aniso_U_33
  Ge1   0.0076(5) 0.0003(4) -0.0011(4) 0.0073(5) -0.0003(4) 0.0071(5)
  As1   0.0097(5) -0.0014(4) -0.0029(4) 0.0131(6) 0.0025(4) 0.0114(5)
  As2   0.0116(5) -0.0003(4) -0.0007(4) 0.0135(6) 0.0025(4) 0.0082(5)
  As3   0.0102(5) 0.0001(4) 0.0009(4) 0.0091(5) -0.0003(4) 0.0112(5)
  Na1   0.0168(24) 0.0017(22) -0.0007(19) 0.0254(29) -0.0003(22) 0.0176(2)
  Na2   0.0171(24) -0.0017(22) -0.0003(19) 0.0273(31) -0.0007(23) 0.0181(25)
  Na3   0.0255(29) -0.0034(24) 0.0009(24) 0.0237(30) 0.0014(25) 0.0295(31)
  Na4   0.0362(35) 0.0161(29) 0.0123(28) 0.0306(35) 0.0115(29) 0.0334(34)
  Na5   0.0299(30) 0.0093(26) -0.0045(23) 0.0263(32) -0.0021(25) 0.0236(28)
_refine_ls_R_factor_all            0.07