#------------------------------------------------------------------------------
#$Date: 2015-01-27 20:58:39 +0100 (Tue 27 de Jan de 2015) $
#$Revision: 130149 $
#$URL: svn://www.crystallography.net/cod/cif/1/00/90/1009030.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_1009030
loop_
_publ_author_name
'Joubert-Bettan, C A'
'Lachenal, R'
'Bertaut, E F'
'Parthe, E'
_publ_section_title
;
The crystal structures of Na2 Zn Si O4, Na2 Zn Ge O4 and Na2 Mg Ge O4
;
_journal_coden_ASTM              JSSCBI
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              1
_journal_page_last               5
_journal_paper_doi               10.1016/0022-4596(69)90001-2
_journal_volume                  1
_journal_year                    1969
_chemical_formula_structural     'Na2 Zn (Si O4)'
_chemical_formula_sum            'Na2 O4 Si Zn'
_chemical_name_systematic        'Disodium zinc silicate'
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      7
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 1'
_cell_angle_alpha                90
_cell_angle_beta                 90.1
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.02
_cell_length_b                   5.44
_cell_length_c                   5.24
_cell_volume                     200.1
_refine_ls_R_factor_all          0.15
_cod_database_code               1009030
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,-y,1/2+z
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
Na1 Na1+ 2 a 0.746 0.695 0.997 1. 0 d
Na2 Na1+ 2 a 0.505 0.177 0.997 1. 0 d
Zn1 Zn2+ 2 a 0.003 0.192 0.999 1. 0 d
Si1 Si4+ 2 a 0.245 0.688 0. 1. 0 d
O1 O2- 2 a 0.724 0.601 0.435 1. 0 d
O2 O2- 2 a 0.556 0.154 0.437 1. 0 d
O3 O2- 2 a 0.935 0.221 0.359 1. 0 d
O4 O2- 2 a 0.286 0.689 0.302 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Na1+ 1.000
Zn2+ 2.000
Si4+ 4.000
O2- -2.000
