data_global _amcsd_formula_title 'Ce Ir3 Si2' loop_ _publ_author_name 'Verniere A' 'Lejay P' 'Bordet P' 'Chenavas J' 'Tholence J' 'Boucherle J' 'Keller N' _journal_name_full 'Journal of Alloys and Compounds' _journal_volume 218 _journal_year 1995 _journal_page_first 197 _journal_page_last 203 _publ_section_title ; Crystal structure and physical properties of new ternary silicides R4T13X9 (R, rare earth or uranium; T, rhodium or iridium; X, silicon or germanium) _cod_database_code 1008679 ; _database_code_amcsd 0016565 _chemical_formula_sum 'Ce Ir3 Si2' _cell_length_a 7.1838 _cell_length_b 9.7373 _cell_length_c 5.6018 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 391.850 _exptl_crystal_density_diffrn 13.102 _symmetry_space_group_name_H-M 'I m m a' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'x,1/2-y,z' '1/2+x,-y,1/2+z' '-x,1/2+y,-z' '1/2-x,+y,1/2-z' '-x,y,z' '1/2-x,1/2+y,1/2+z' 'x,-y,-z' '1/2+x,1/2-y,1/2-z' 'x,1/2+y,-z' '1/2+x,+y,1/2-z' '-x,1/2-y,z' '1/2-x,-y,1/2+z' '-x,-y,-z' '1/2-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ce1 0.00000 0.25000 0.72010 Ir1 0.28170 0.00000 0.00000 Ir2 0.25000 0.25000 0.25000 Si1 0.00000 0.07490 0.19560 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ce1 0.00710 0.01040 0.00520 0.00150 0.00000 0.00000 Ir1 0.00730 0.00760 0.00510 0.00000 0.00000 0.00000 Ir2 0.00610 0.00850 0.00520 0.00000 0.00000 0.00000 Si1 0.00410 0.00600 0.00290 0.00000 0.00000 0.00000