Regioselective 2,2,2-Trifluoroethylation of Imidazopyridines by Visible Light Photoredox Catalysis.
Zhu, Mei; Han, Xin; Fu, Weijun; Wang, Zhiqiang; Ji, Baoming; Hao, Xin-Qi; Song, Mao-Ping; Xu, Chen; The Journal of organic chemistry 81 (2016) 7282–7287; doi:10.1021/acs.joc.6b00950

data_4036923
_publ_section_title
;
 Regioselective 2,2,2-Trifluoroethylation of Imidazopyridines by Visible
 Light Photoredox Catalysis.
;
_journal_issue                   16
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              7282
_journal_page_last               7287
_journal_paper_doi               10.1021/acs.joc.6b00950
_journal_volume                  81
_journal_year                    2016
_chemical_formula_sum            'C10 H11 F3 N2 O'
_chemical_formula_weight         232.21
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 102.982(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9513(10)
_cell_length_b                   4.8424(6)
_cell_length_c                   25.886(3)
_cell_measurement_reflns_used    1500
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.51
_cell_measurement_theta_min      23
_cell_volume                     1093.4(2)
_computing_cell_refinement       'Bruker FRAMBO'
_computing_data_collection       'Bruker FRAMBO'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'multiwire proportional'
_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  0.0175
_diffrn_reflns_av_sigmaI/netI    0.0305
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            4176
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.54
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.127
_exptl_absorpt_correction_T_max  0.9652
_exptl_absorpt_correction_T_min  0.9496
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.411
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.292
_refine_diff_density_min         -0.246
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.128
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         2020
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.0776
_refine_ls_R_factor_gt           0.0595
_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^)+(0.0477P)^2^+0.5856P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1396
_refine_ls_wR_factor_ref         0.1504
_reflns_number_gt                1509
_reflns_number_total             2020
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b00950_si_002.cif
_cod_data_source_block           a
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4036923