Synthesis, X-ray crystal structures, and computational studies of 1,1′-bridged 4,4′-diaryl-2,2′-bibenzimidazoles: building blocks for supramolecular structures
Frantz, Derik K.; Sullivan, Ashley A.; Yasui, Yoshizumi; Linden, Anthony; Baldridge, Kim K.; Siegel, Jay S.; Organic & Biomolecular Chemistry 7 (2009) 2347–2352; doi:10.1039/b820502g

data_7150594
_publ_section_title
;
 Synthesis, X-ray crystal structures, and computational studies of
 1,1&#x2032;-bridged 4,4&#x2032;-diaryl-2,2&#x2032;-bibenzimidazoles:
 building blocks for supramolecular structures
;
_journal_issue                   11
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              2347
_journal_page_last               2352
_journal_paper_doi               10.1039/b820502g
_journal_volume                  7
_journal_year                    2009
_chemical_formula_moiety         'C37 H38 N4 O2, 2(C H2 Cl2)'
_chemical_formula_sum            'C39 H42 Cl4 N4 O2'
_chemical_formula_weight         740.60
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             06-08-04
_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                   20.2497(2)
_cell_length_b                   14.7082(2)
_cell_length_c                   24.9430(4)
_cell_measurement_reflns_used    104889
_cell_measurement_temperature    160(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.0
_cell_volume                     7428.94(17)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction
'DENZO-SMN and SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'SHELXL97 and PLATON (Spek, 2006)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      160(1)
_diffrn_detector                 '65 mm CCD camera on \k goniostat'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD area-detector diffractometer'
_diffrn_measurement_method       '\f and \w scans with \k offsets'
_diffrn_radiation_monochromator  'horizontally mounted graphite crystal'
_diffrn_radiation_source         'Nonius FR590 sealed tube generator'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0751
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            89418
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.01
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.358
_exptl_absorpt_correction_T_max  0.943
_exptl_absorpt_correction_T_min  0.751
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.324
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3104
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.401
_refine_diff_density_min         -0.504
_refine_diff_density_rms         0.075
_refine_ls_extinction_coef       0.0141(6)
_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   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     451
_refine_ls_number_reflns         8506
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0806
_refine_ls_R_factor_gt           0.0538
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0650P)^2^+5.2510P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1312
_refine_ls_wR_factor_ref         0.1457
_reflns_number_gt                6208
_reflns_number_total             8506
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            b820502g.txt
_cod_data_source_block           SG0626
_cod_original_sg_symbol_H-M      'P b c a '
_cod_database_code               7150594