Visible-Light-Induced Radical Carbo-Cyclization/<i>gem</i>-Diborylation through Triplet Energy Transfer between a Gold Catalyst and Aryl Iodides.
Zhang, Lumin; Si, Xiaojia; Rominger, Frank; Hashmi, A Stephen K; Journal of the American Chemical Society  (2020) –; doi:10.1021/jacs.0c03197

data_4135035
_publ_section_title
;
 Visible-Light-Induced Radical Carbo-Cyclization/<i>gem</i>-Diborylation
 through Triplet Energy Transfer between a Gold Catalyst and Aryl Iodides.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.0c03197
_journal_year                    2020
_chemical_formula_sum            'C21 H30 B2 O5'
_chemical_formula_weight         384.07
_chemical_name_common            '3aa in manuscript'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 92.608(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.5212(3)
_cell_length_b                   11.9108(6)
_cell_length_c                   27.1935(11)
_cell_measurement_reflns_used    12453
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      67.18
_cell_measurement_theta_min      4.06
_cell_volume                     2110.01(17)
_computing_cell_refinement       'X-Area Recipe 1.33.0.0 (STOE, 2015)'
_computing_data_collection       'X-Area Pilatus3_SV 1.31.144.0 (STOE, 2018)'
_computing_data_reduction        'X-Area Integrate 1.73.0.0 (STOE, 2018)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT-2014 (Sheldrick 2014)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 5.81
_diffrn_measured_fraction_theta_full 0.969
_diffrn_measured_fraction_theta_max 0.969
_diffrn_measurement_device_type  'STOE Stadivari'
_diffrn_measurement_method       'rotation method, \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0527
_diffrn_reflns_av_unetI/netI     0.0418
_diffrn_reflns_Laue_measured_fraction_full 0.969
_diffrn_reflns_Laue_measured_fraction_max 0.969
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11203
_diffrn_reflns_point_group_measured_fraction_full 0.969
_diffrn_reflns_point_group_measured_fraction_max 0.969
_diffrn_reflns_theta_full        67.264
_diffrn_reflns_theta_max         67.264
_diffrn_reflns_theta_min         4.052
_diffrn_source                   'Genix3D Cu HF'
_exptl_absorpt_coefficient_mu    0.666
_exptl_absorpt_correction_T_max  1.946
_exptl_absorpt_correction_T_min  0.469
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'STOE X-AREA LANA'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.209
_exptl_crystal_description       brick
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.083
_exptl_crystal_size_mid          0.062
_exptl_crystal_size_min          0.054
_refine_diff_density_max         0.182
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     261
_refine_ls_number_reflns         3672
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0886
_refine_ls_R_factor_gt           0.0558
_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^)+(0.0878P)^2^+0.5391P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1412
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_reflns_Friedel_coverage         0.000
_reflns_number_gt                2465
_reflns_number_total             3672
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja0c03197_si_001.cif
_cod_data_source_block           lz7
_cod_original_cell_volume        2110.00(17)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4135035
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.947
_shelx_estimated_absorpt_t_max   0.965
_exptl_absorpt_special_details   'X-Area LANA 1.70.0.0 (STOE, 2017)'
_shelx_res_checksum              11017
_shelx_hkl_checksum              93196