3,3-Dibenzylbenzo[<i>b</i>]furan-2(3<i>H</i>)-one
Wang, Hai-Bo; Chen, Jia-Hui; Wang, Jin-Tang; Acta Crystallographica Section E 60 (2004) o1842–o1843; doi:10.1107/S1600536804022846

data_2204418
_publ_section_title
;
 3,3-Dibenzylbenzo[<i>b</i>]furan-2(3<i>H</i>)-one
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1842
_journal_page_last               o1843
_journal_paper_doi               10.1107/S1600536804022846
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C22 H18 O2'
_chemical_formula_moiety         'C22 H18 O2'
_chemical_formula_sum            'C22 H18 O2'
_chemical_formula_weight         314.36
_chemical_name_systematic
;
3,3-Dibenzylbenzo[b]furan-2(3H)-one
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.650(3)
_cell_length_b                   15.488(3)
_cell_length_c                   8.772(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      10
_cell_volume                     1718.6(7)
_computing_cell_refinement       'CAD-4 Software'
_computing_data_collection       'CAD-4 Software (Enraf-Nonius, 1989)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'SHELXTL (Siemens, 1996)'
_computing_publication_material  SHELXS97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Nonius CAD-4'
_diffrn_measurement_method       \w/2\q/
_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  0.0000
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_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       10
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_diffrn_reflns_number            1740
_diffrn_reflns_theta_full        25.98
_diffrn_reflns_theta_max         25.98
_diffrn_reflns_theta_min         2.63
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  2h
_diffrn_standards_number         25
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.977
_exptl_absorpt_correction_T_min  0.973
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.215
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
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_refine_diff_density_max         0.197
_refine_diff_density_min         -0.138
_refine_ls_extinction_coef       0.069(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   0.979
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     125
_refine_ls_number_reflns         1740
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.979
_refine_ls_R_factor_all          0.0933
_refine_ls_R_factor_gt           0.0455
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.1P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1286
_refine_ls_wR_factor_ref         0.1583
_reflns_number_gt                1002
_reflns_number_total             1740
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww6287.cif
_cod_data_source_block           I
_cod_original_cell_volume        1718.6(6)
_cod_database_code               2204418
_cod_database_fobs_code          2204418