data_2002552
_publ_section_title              'Zur Kenntnis von Sr5 Au2 O8'
_journal_name_full               'Journal of Alloys Compd.'
_journal_page_first              105
_journal_page_last               109
_journal_paper_doi               10.1016/0925-8388(92)90625-J
_journal_volume                  186
_journal_year                    1992
_chemical_formula_structural     'Sr5 (Au2 O8)'
_chemical_formula_sum            'Au2 O8 Sr5'
_chemical_name_systematic        'Pentastrontium diaurate'
_space_group_IT_number           22
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      22
_symmetry_space_group_name_Hall  'F 2 2'
_symmetry_space_group_name_H-M   'F 2 2 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.7449(26)
_cell_length_b                   11.7407(24)
_cell_length_c                   6.5155(19)
_cell_volume                     898.4
_refine_ls_R_factor_all          0.069
_cod_database_code               2002552
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z
x,-y,-z
-x,y,-z
x,1/2+y,1/2+z
1/2+x,y,1/2+z
1/2+x,1/2+y,z
-x,1/2-y,1/2+z
1/2-x,-y,1/2+z
1/2-x,1/2-y,z
x,1/2-y,1/2-z
1/2+x,-y,1/2-z
1/2+x,1/2-y,-z
-x,1/2+y,1/2-z
1/2-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
Au1 Au3+ 4 a 0. 0. 0. 1. 0 d
Au2 Au3+ 4 b 0. 0. 0.5 1. 0 d
Sr1 Sr2+ 4 c 0.25 0.25 0.25 1. 0 d
Sr2 Sr2+ 8 i 0.25 0.5268(4) 0.25 1. 0 d
Sr3 Sr2+ 8 j 0.0273(4) 0.25 0.25 1. 0 d
O1 O2- 16 k 0.127(5) 0.124(6) 0.037(9) 1. 0 d
O2 O2- 16 k 0.118(3) 0.877(3) 0.501(7) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Au3+ 3.000
Sr2+ 2.000
O2- -2.000
