data_1532211
_publ_section_title
;
 Synthese und Kristallstrukturen der Calcium-Iridiumsilicide Ca3 Ir4Si4
 und Ca2 Ir2 Si
;
_journal_name_full
'Zeitschrift fuer Anorganische und Allgemeine Chemie'
_journal_page_first              1806
_journal_page_last               1810
_journal_volume                  628
_journal_year                    2002
_chemical_formula_sum            'Ca2 Ir2 Si'
_chemical_name_systematic        'Ca2 Ir2 Si'
_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                 100.212
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.6567
_cell_length_b                   5.8252
_cell_length_c                   7.3019
_cell_volume                     404.241
_citation_journal_id_ASTM        ZAACAB
_cod_data_source_file            Schoolaert_ZAACAB_2002_984.cif
_cod_data_source_block           Ca2Ir2Si1
_cod_original_cell_volume        404.2411
_cod_chemical_formula_sum_orig   'Ca2 Ir2 Si1'
_cod_database_code               1532211
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
Si1 Si 0 0.5665 0.25 1 0.0
Ca1 Ca 0.8536 0.871 0.8596 1 0.0
Ir1 Ir 0.13169 0.64112 0.00995 1 0.0
