Phase Selection and Site-Selective Distribution by Tin and Sulfur in Supertetrahedral Zinc Gallium Selenides
Tao Wu; Xianhui Bu; Xiang Zhao; Ripsime Khazhakyan; Pingyun Feng; Journal of the American Chemical Society 133 (2011) 9616–9625; doi:10.1021/ja203143q

data_4106296
_publ_section_title
;
 Phase Selection and Site-Selective Distribution by Tin and Sulfur in
 Supertetrahedral Zinc Gallium Selenides
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9616
_journal_page_last               9625
_journal_paper_doi               10.1021/ja203143q
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'Ga16 N2 S12.33 Se20.67 Zn4'
_chemical_formula_weight         3432.54
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           142
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4bd 2c'
_symmetry_space_group_name_H-M   'I 41/a c d :2'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   23.5451(2)
_cell_length_b                   23.5451(2)
_cell_length_c                   41.2267(8)
_cell_measurement_reflns_used    160
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      4.6
_cell_volume                     22854.9(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Apex2'
_diffrn_measurement_method       '\w scan'
_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  0.0851
_diffrn_reflns_av_sigmaI/netI    0.0455
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -44
_diffrn_reflns_number            48806
_diffrn_reflns_theta_full        22.50
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         1.73
_exptl_absorpt_coefficient_mu    11.340
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.995
_exptl_crystal_density_meas      ?
_exptl_crystal_description       octahedral
_exptl_crystal_F_000             12241
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.19
_refine_diff_density_max         1.316
_refine_diff_density_min         -0.946
_refine_diff_density_rms         0.274
_refine_ls_extinction_coef       0.000044(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.091
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     144
_refine_ls_number_reflns         3749
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.1245
_refine_ls_R_factor_gt           0.0592
_refine_ls_shift/su_max          0.024
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1175P)^2^+431.9571P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1914
_refine_ls_wR_factor_ref         0.2499
_reflns_number_gt                1977
_reflns_number_total             3749
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja203143q_si_002_04.cif
_cod_data_source_block           OCF-5-ZnGaSeS-DPM
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'I 41/a c d'
_cod_database_code               4106296