data_global
_amcsd_formula_title 'Er4 Ir13 Si9'
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 1008678
;
_database_code_amcsd 0016564
_chemical_formula_sum 'Er4 Ir13 Si9'
_cell_length_a 18.84799
_cell_length_b 10.918
_cell_length_c 3.9153
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 805.700
_exptl_crystal_density_diffrn     14.100
_symmetry_space_group_name_H-M 'P n m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '-x,1/2+y,1/2+z'
  'x,1/2-y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Er1   0.79224   0.05920   0.25000
Er2   0.48040   0.75000   0.25000
Er3   0.97840   0.25000   0.25000
Ir1   0.66439   0.06640   0.75000
Ir2   0.85797   0.25000   0.75000
Ir3   0.65711   0.25000   0.25000
Ir4   0.22752   0.25000   0.75000
Ir5   0.46076   0.06070   0.25000
Ir6   0.04654   0.04960   0.75000
Ir7   0.85708   0.87430   0.75000
Ir8   0.64473   0.87770   0.25000
Si1   0.60160   0.75000   0.75000
Si2   0.58440   0.43040   0.25000
Si3   0.91830   0.06110   0.75000
Si4   0.89750   0.75000   0.25000
Si5   0.27080   0.37780   0.25000
Si6   0.26660   0.75000   0.25000
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
Er1 0.00710 0.01040 0.00520 0.00150 0.00000 0.00000
Er2 0.00730 0.00760 0.00510 0.00000 0.00000 0.00000
Er3 0.00610 0.00850 0.00520 0.00000 0.00000 0.00000
Ir1 0.00410 0.00600 0.00290 0.00000 0.00000 0.00000
Ir2 0.00230 0.00790 0.01950 0.00000 0.00000 0.00000
Ir3 0.00520 0.00580 0.00440 0.00000 0.00000 0.00000
Ir4 0.00240 0.00670 0.00320 0.00000 0.00000 0.00000
Ir5 0.00180 0.00710 0.00420 0.00020 0.00000 0.00000
Ir6 0.00410 0.00760 0.00280 -0.00130 0.00000 0.00000
Ir7 0.00310 0.00610 0.00280 -0.00100 0.00000 0.00000
Ir8 0.00430 0.00550 0.00440 0.00000 0.00000 0.00000