Bis(benzimidazol-2-yl)methane
Gui-Yun Duan; Ya-Wei Sun; Jun-Zhi Liu; Jian-Wu Wang; Acta Crystallographica Section E 61 (2005) o3476–o3477; doi:10.1107/S1600536805030229

data_2206935
_publ_section_title
;
 Bis(benzimidazol-2-yl)methane
;
_journal_coeditor_code           CV6580
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3476
_journal_page_last               o3477
_journal_paper_doi               10.1107/S1600536805030229
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C15 H12 N4'
_chemical_formula_moiety         'C15 H12 N4'
_chemical_formula_sum            'C15 H12 N4'
_chemical_formula_weight         248.29
_chemical_name_systematic
;
 Bis(benzimidazol-2-yl)methane
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   18.296(4)
_cell_length_b                   18.296(4)
_cell_length_c                   15.728(3)
_cell_measurement_reflns_used    4441
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.832
_cell_measurement_theta_min      2.225
_cell_volume                     5264.8(19)
_computing_cell_refinement       'SAINT (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 1999)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.0353
_diffrn_reflns_av_sigmaI/netI    0.0244
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            10662
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         2.81
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.9791
_exptl_absorpt_correction_T_min  0.9500
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.253
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2080
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.27
_refine_diff_density_max         0.201
_refine_diff_density_min         -0.157
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2307
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0555
_refine_ls_R_factor_gt           0.0416
_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^)+(0.075P)^2^+1.5659P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1159
_refine_ls_wR_factor_ref         0.1303
_reflns_number_gt                1798
_reflns_number_total             2307
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv6580.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        5264.6(18)
_cod_original_sg_symbol_H-M      I41/a
_cod_database_code               2206935
_cod_database_fobs_code          2206935