Modification of channel structures by fluorination
Katharina Reichenbächer; Heike I. Süss; Helen Stoeckli-Evans; Silvia Bracco; Piero Sozzani; Edwin Weber; Jürg Hulliger; New J. Chem. 28 (2004) 393–397; doi:10.1039/b311028a

data_7050214
_publ_section_title
;
 Modification of channel structures by fluorination
;
_journal_issue                   3
_journal_name_full               'New J. Chem.'
_journal_page_first              393
_journal_page_last               397
_journal_paper_doi               10.1039/b311028a
_journal_volume                  28
_journal_year                    2004
_chemical_formula_moiety         'C21 H12 Br3 N3 O3'
_chemical_formula_sum            'C21 H12 Br3 N3 O3'
_chemical_formula_weight         594.07
_space_group_IT_number           161
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_atom_sites_solution_hydrogens   geom
_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                120.00
_cell_formula_units_Z            6
_cell_length_a                   23.869(2)
_cell_length_b                   23.869(2)
_cell_length_c                   6.4684(5)
_cell_measurement_reflns_used    3252
_cell_measurement_temperature    253(2)
_cell_measurement_theta_max      24.01
_cell_measurement_theta_min      1.71
_cell_volume                     3191.5(5)
_computing_cell_refinement       'CELL (Stoe IPDS Software, 2000)'
_computing_data_collection       'EXPOSE (Stoe IPDS Software, 2000)'
_computing_data_reduction        'INTEGRATE (Stoe IPDS Software, 2000)'
_computing_molecular_graphics    'PLATON99 (Spek, 1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      253(2)
_diffrn_detector_area_resol_mean 0.87\%A
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'STOE IPDS'
_diffrn_measurement_method       'phi oscillation'
_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  0.0925
_diffrn_reflns_av_sigmaI/netI    0.0815
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            4839
_diffrn_reflns_theta_full        24.01
_diffrn_reflns_theta_max         24.01
_diffrn_reflns_theta_min         1.71
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    5.716
_exptl_absorpt_correction_T_max  0.703
_exptl_absorpt_correction_T_min  0.244
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   DIFABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.855
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.004(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.900
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         1090
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.899
_refine_ls_R_factor_all          0.0539
_refine_ls_R_factor_gt           0.0343
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0172P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0560
_refine_ls_wR_factor_ref         0.0595
_reflns_number_gt                843
_reflns_number_total             1090
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            b311028a.txt
_cod_data_source_block           brtriaz
_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      'R 3 c'
_cod_database_code               7050214