#------------------------------------------------------------------------------
#$Date: 2010-01-30 15:59:17 +0200 (Sat, 30 Jan 2010) $
#$Revision: 966 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/1200004.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_1200004
loop_
_publ_author_name                'Coing-Boyat, J'
_publ_section_title
;
Structure de la forme hautes temperatures du sulfate anhydre de 
magnesium, $-beta-Mg S O~4~
;
_journal_coden_ASTM              COREAF
_journal_name_full
;
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 
(1884 - 1965)
;
_journal_page_first              1962
_journal_page_last               1964
_journal_volume                  255
_journal_year                    1962
_chemical_formula_structural     'Mg S O4'
_chemical_formula_sum            'Mg O4 S'
_chemical_name_systematic        'Magnesium sulfate - $-beta'
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      62
_symmetry_space_group_name_H-M   'P b n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.742
_cell_length_b                   8.575
_cell_length_c                   6.699
_cell_volume                     272.4
_refine_ls_R_factor_all          0.144
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2-x,1/2+y,1/2-z
-x,-y,1/2+z
1/2+x,1/2-y,-z
-x,-y,-z
1/2+x,1/2-y,1/2+z
x,y,1/2-z
1/2-x,1/2+y,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
Mg1 Mg2+ 4 a 0. 0. 0. 1. 0 d
S1 S6+ 4 c 0.458 0.186 0.25 1. 0 d
O1 O2- 4 c 0.75 0.13 0.25 1. 0 d
O2 O2- 4 c 0.458 0.367 0.25 1. 0 d
O3 O2- 8 d 0.319 0.13 0.061 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Mg2+ 2.000
S6+ 6.000
O2- -2.000
_cod_database_code 1200004