Lanthanum iodide thiosilicate, La~3~I[SiS~4~]~2~
Hatscher, Stephan T.; Urland, Werner; Acta Crystallographica Section E 58 (2002) i100–i102; doi:10.1107/S1600536802019256

data_2201253
_publ_section_title
;
 Lanthanum iodide thiosilicate, La~3~I[SiS~4~]~2~
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              i100
_journal_page_last               i102
_journal_paper_doi               10.1107/S1600536802019256
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'La3 I (Si S4)2'
_chemical_formula_structural     'La3 I (Si S4)2'
_chemical_formula_sum            'I La3 S8 Si2'
_chemical_formula_weight         856.29
_chemical_name_common            'lanthanum iodide thiosilicate'
_chemical_name_systematic
;
Lanthanum(III)-iodide-di-ortho-thiosilicate
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 97.94(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.110(3)
_cell_length_b                   7.9175(12)
_cell_length_c                   10.931(2)
_cell_measurement_reflns_used    11586
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.13
_cell_measurement_theta_min      2.55
_cell_volume                     1380.9(4)
_computing_cell_refinement       'IPDS Software'
_computing_data_collection       'IPDS Software (Stoe & Cie, 1998)'
_computing_data_reduction        'IPDS Software'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 1998)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 60
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Stoe IPDS'
_diffrn_measurement_method       '240 exposures, \D\f 1.2\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0438
_diffrn_reflns_av_sigmaI/netI    0.0265
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            11586
_diffrn_reflns_theta_full        28.13
_diffrn_reflns_theta_max         28.13
_diffrn_reflns_theta_min         2.55
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    12.689
_exptl_absorpt_correction_T_max  0.2558
_exptl_absorpt_correction_T_min  0.1204
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details   '(X-RED; Stoe & Cie, 1998)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    4.119
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tabular
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.885
_refine_diff_density_min         -1.217
_refine_ls_extinction_coef       0.00359(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   0.950
_refine_ls_matrix_type           full
_refine_ls_number_parameters     66
_refine_ls_number_reflns         1671
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.950
_refine_ls_R_factor_all          0.0237
_refine_ls_R_factor_gt           0.0191
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0253P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0396
_refine_ls_wR_factor_ref         0.0402
_reflns_number_gt                1467
_reflns_number_total             1671
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            br6065.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not
given.

'_exptl_absorpt_correction_type' value 'Gaussian' changed to
'gaussian' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_original_formula_sum        'I1 La3 S8 Si2'
_cod_database_code               2201253
_cod_database_fobs_code          2201253