#------------------------------------------------------------------------------
#$Date: 2016-01-09 14:03:09 +0100 (Sat 09 de Jan de 2016) $
#$Revision: 174292 $
#$URL: svn://www.crystallography.net/cod/cif/1/54/22/1542229.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_1542229
loop_
_publ_author_name
'Leung, K.Y.'
'Calvo, C.'
_publ_section_title
;
 Crystal structure and phase transformations of sodium diarsenate, Na4 As2
 O7
;
_journal_name_full               'Canadian Journal of Chemistry'
_journal_page_first              2082
_journal_page_last               2088
_journal_volume                  51
_journal_year                    1973
_chemical_formula_sum            'As2 Na4 O7'
_chemical_name_systematic        'Na4 (As2 O7)'
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 92.87
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.969
_cell_length_b                   10.126
_cell_length_c                   12.272
_cell_volume                     740.815
_citation_journal_id_ASTM        CJCHAG
_cod_data_source_file            Leung_CJCHAG_1973_998.cif
_cod_data_source_block           As2Na4O7
_cod_original_cell_volume        740.8151
_cod_database_code               1542229
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y,-z+1/2
-x,-y,-z
x,-y,z-1/2
x+1/2,y+1/2,z
-x+1/2,y+1/2,-z+1/2
-x+1/2,-y+1/2,-z
x+1/2,-y+1/2,z-1/2
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
O1 O-2 0 0.0689 0.25 1 0.0
As1 As+5 0.14474 0.15226 0.3605 1 0.0
O4 O-2 0.2649 0.287 0.3133 1 0.0
O2 O-2 -0.0605 0.1787 0.4442 1 0.0
O3 O-2 0.3219 0.036 0.4046 1 0.0
Na1 Na+1 0.3438 0.3216 0.1273 1 0.0
Na2 Na+1 0.3118 -0.0155 0.0958 1 0.0
