Molecular bricklaying II. : Anion and chain length effects in bisbenzimidazolonium salts
Verdan, Simon; Melich, Xavier; Bernardinelli, Gérald; Williams, Alan F.; CrystEngComm 11 (2009) 1416–; doi:10.1039/b820737b

data_7200723
_publ_section_title
;
 Molecular bricklaying II. : Anion and chain length effects in
 bisbenzimidazolonium salts
;
_journal_issue                   7
_journal_name_full               CrystEngComm
_journal_page_first              1416
_journal_paper_doi               10.1039/b820737b
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C20 H24 N4, 2(Cl)'
_chemical_formula_sum            'C20 H24 Cl2 N4'
_chemical_formula_weight         391.4
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_cell_angle_alpha                90.00000
_cell_angle_beta                 90.00000
_cell_angle_gamma                90.00000
_cell_formula_units_Z            4
_cell_length_a                   6.9279(4)
_cell_length_b                   17.4853(12)
_cell_length_c                   16.1931(11)
_cell_measurement_reflns_used    7283
_cell_measurement_temperature    200
_cell_measurement_theta_max      27.9
_cell_measurement_theta_min      2.5
_cell_volume                     1961.6(2)
_computing_cell_refinement       'CELL (Stoe & Cie, 1999)'
_computing_data_collection       'EXPOSE (Stoe & Cie, 1999)'
_computing_data_reduction        'XRED (Stoe & Cie, 1999)'
_computing_molecular_graphics    xtal_gx3
_computing_publication_material  xtal_BONDLA_CIFIO
_computing_structure_refinement  xtal_CRYLSQ
_computing_structure_solution    Multan_87
_diffrn_detector_area_resol_mean 6
_diffrn_measured_fraction_theta_full 1.0
_diffrn_measured_fraction_theta_max 1.0
_diffrn_measurement_device_type  'Stoe Ipds'
_diffrn_measurement_method       \f
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .091
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            20927
_diffrn_reflns_theta_full        27.9
_diffrn_reflns_theta_max         27.9
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    .341
_exptl_absorpt_correction_T_max  .9847
_exptl_absorpt_correction_T_min  .9263
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'XRED; Stoe & Cie, 1999'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_meas      ?
_exptl_crystal_description       plate
_exptl_crystal_F_000             824
_exptl_crystal_size_max          .34
_exptl_crystal_size_mid          .166
_exptl_crystal_size_min          .045
_refine_diff_density_max         .399
_refine_diff_density_min         -.315
_refine_ls_abs_structure_details none
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.30(3)
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_number_parameters     154
_refine_ls_number_reflns         1064
_refine_ls_R_factor_gt           .030
_refine_ls_shift/su_max          .0002
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     \w=1/[\s^2^(Fo)+0.00015(Fo^2^)]
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .029
_reflns_number_gt                955
_reflns_number_total             2323
_reflns_threshold_expression     'refl observed if Fo > 3.99 \s(Fo)'
_cod_data_source_file            b820737b.txt
_cod_data_source_block           XALA
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' 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      'P bca'
_cod_database_code               7200723