Photocatalytic reductive radical-radical coupling of N, N'-cyclicazomethine imines with difluorobromo derivatives
Xia, Peng-Ju; Ye, Zhi-Peng; Song, Dan; Ren, Ji-Wei; Wu, Han-Wen; Xiao, Jun-An; Xiang, Haoyue; Chen, Xiaoqing; Yang, Hua; Chemical Communications  (2019) –; doi:10.1039/C8CC09385G

data_7122946
_publ_section_title
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 Photocatalytic reductive radical-radical coupling of N,
 N'-cyclicazomethine imines with difluorobromo derivatives
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C8CC09385G
_journal_year                    2019
_chemical_formula_sum            'C20 H20 F2 N2 O3'
_chemical_formula_weight         374.38
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-07-26 deposited with the CCDC.
2019-02-05 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 115.021(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.6732(7)
_cell_length_b                   16.7833(11)
_cell_length_c                   10.3207(7)
_cell_measurement_reflns_used    4220
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.54
_cell_measurement_theta_min      3.10
_cell_volume                     1832.2(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0305
_diffrn_reflns_av_sigmaI/netI    0.0226
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            28655
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.105
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    1.357
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BAR
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.641
_refine_diff_density_min         -0.442
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     242
_refine_ls_number_reflns         4220
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0871
_refine_ls_R_factor_gt           0.0656
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0921P)^2^+0.9712P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1733
_refine_ls_wR_factor_ref         0.1894
_reflns_number_gt                3156
_reflns_number_total             4220
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8cc09385g2.cif
_cod_data_source_block           ja_CCDC2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7122946