1,2,4,5-Tetraphenyl-1<i>H</i>-imidazole
Zhao, Bing; Li, Zhi-yu; Fan, Meng-jiao; Song, Bo; Deng, Qi-gang; Acta Crystallographica Section E 68 (2012) o542–; doi:10.1107/S1600536812003145

data_2233423
_publ_section_title
;
 1,2,4,5-Tetraphenyl-1<i>H</i>-imidazole
;
_journal_coeditor_code           CV5236
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o542
_journal_paper_doi               10.1107/S1600536812003145
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C27 H20 N2'
_chemical_formula_moiety         'C27 H20 N2'
_chemical_formula_sum            'C27 H20 N2'
_chemical_formula_weight         372.45
_chemical_name_systematic
;
1,2,4,5-Tetraphenyl-1<i>H</i>-imidazole
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                81.133(5)
_cell_angle_beta                 82.922(6)
_cell_angle_gamma                84.085(6)
_cell_formula_units_Z            4
_cell_length_a                   9.8169(15)
_cell_length_b                   9.8846(15)
_cell_length_c                   20.601(3)
_cell_measurement_reflns_used    6569
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.9
_cell_measurement_theta_min      2.0
_cell_volume                     1952.9(5)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 14.22
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Rigaku Saturn CCD area-detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0365
_diffrn_reflns_av_sigmaI/netI    0.0532
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            25242
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         2.01
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9926
_exptl_absorpt_correction_T_min  0.9853
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear; Rigaku/MSC, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.181
_refine_diff_density_min         -0.217
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.980
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     525
_refine_ls_number_reflns         9251
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.980
_refine_ls_R_factor_all          0.0503
_refine_ls_R_factor_gt           0.0367
_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^)+(0.0436P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0851
_refine_ls_wR_factor_ref         0.0901
_reflns_number_gt                6476
_reflns_number_total             9251
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv5236.cif
_cod_data_source_block           I
_cod_database_code               2233423
_cod_database_fobs_code          2233423