2,4,7-triphenylbenzimidazole : the monomeric unit of supramolecular helical rod-like transmembrane transporters
Kempf, Julie; Noujeim, Nadim; Schmitzer, Andreea R.; RSC Advances  (2014) –; doi:10.1039/C4RA06887D

data_7217828
_publ_section_title
;
 2,4,7-triphenylbenzimidazole : the monomeric unit of supramolecular
 helical rod-like transmembrane transporters
;
_journal_name_full               'RSC Advances'
_journal_paper_doi               10.1039/C4RA06887D
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_sum            'C26 H20 Cl4 N2'
_chemical_formula_weight         502.24
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.2022(2)
_cell_length_b                   13.4802(4)
_cell_length_c                   23.7766(7)
_cell_measurement_reflns_used    9469
_cell_measurement_temperature    100
_cell_measurement_theta_max      70.90
_cell_measurement_theta_min      3.72
_cell_volume                     2308.40(12)
_computing_cell_refinement       'SAINT V7.68A(Bruker AXS, 2009)'
_computing_data_collection       'APEX2  (Bruker AXS, 2009)'
_computing_data_reduction        'SAINT V7.68A(Bruker AXS, 2009)'
_computing_molecular_graphics    'SHELXTL  (Bruker AXS, 2003)'
_computing_publication_material  'UdMX (Maris, 2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX II'
_diffrn_measurement_method       \w
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.061
_diffrn_reflns_av_unetI/netI     0.0393
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            31032
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         71.209
_diffrn_reflns_theta_min         3.718
_diffrn_source                   'Incoatec I\muS Microsource '
_exptl_absorpt_coefficient_mu    4.792
_exptl_absorpt_correction_T_max  0.7534
_exptl_absorpt_correction_T_min  0.4971
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 2008)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.445
_exptl_crystal_description       needle
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_ls_abs_structure_details
'Flack, H.D. and Schwarzenbach, D. (1999), XXXX Friedel Pairs'
_refine_ls_abs_structure_Flack   0.027(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_matrix_type           full
_refine_ls_number_parameters     295
_refine_ls_number_reflns         4456
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0453
_refine_ls_R_factor_gt           0.0429
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0788P)^2^+0.6880P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1113
_refine_ls_wR_factor_ref         0.1136
_reflns_Friedel_coverage         0.731
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.986
_reflns_number_gt                4239
_reflns_number_total             4456
_cod_data_source_file            c4ra06887d2.cif
_cod_data_source_block           JULIE2
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               7217828
_shelx_estimated_absorpt_t_min   0.514
_shelx_estimated_absorpt_t_max   0.910
_shelx_res_checksum              40873