data_7209413
_publ_section_title
;
 Neue Verbindungen A B2 X2 (A= Erdalkalimetall, B= Uebergangselement, X=
 Element(IV)) im ThCr2Si2-Typ
;
_journal_name_full
;
Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische
 Chemie (2,1947-32,1977)
;
_journal_page_first              890
_journal_page_last               891
_journal_volume                  31
_journal_year                    1976
_chemical_formula_sum            'Au2 Si2 Sr'
_chemical_name_systematic        'Sr Au2 Si2'
_space_group_IT_number           139
_symmetry_space_group_name_Hall  '-I 4 2'
_symmetry_space_group_name_H-M   'I 4/m m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   4.37
_cell_length_b                   4.37
_cell_length_c                   10.14
_cell_volume                     193.643
_citation_journal_id_ASTM        ZENBAX
_[local]_cod_data_source_file    gold_557.cif
_[local]_cod_data_source_block   Au2Si2Sr1
_[local]_cod_chemical_formula_sum_orig 'Au2 Si2 Sr1'
_cod_original_cell_volume        193.6426
_cod_database_code               7209413
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,x,z
-x,-y,z
y,-x,z
x,-y,-z
y,x,-z
-x,y,-z
-y,-x,-z
-x,-y,-z
y,-x,-z
x,y,-z
-y,x,-z
-x,y,z
-y,-x,z
x,-y,z
y,x,z
x+1/2,y+1/2,z+1/2
-y+1/2,x+1/2,z+1/2
-x+1/2,-y+1/2,z+1/2
y+1/2,-x+1/2,z+1/2
x+1/2,-y+1/2,-z+1/2
y+1/2,x+1/2,-z+1/2
-x+1/2,y+1/2,-z+1/2
-y+1/2,-x+1/2,-z+1/2
-x+1/2,-y+1/2,-z+1/2
y+1/2,-x+1/2,-z+1/2
x+1/2,y+1/2,-z+1/2
-y+1/2,x+1/2,-z+1/2
-x+1/2,y+1/2,z+1/2
-y+1/2,-x+1/2,z+1/2
x+1/2,-y+1/2,z+1/2
y+1/2,x+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
Au1 Au+3 0 0.5 0.25 1 0.0
Sr1 Sr+2 0 0 0 1 0.0
Si1 Si-4 0 0 0.363 1 0.0
