Metal-Free Borylation of Heteroarenes using Ambiphilic Aminoboranes: On the Importance of Sterics in Frustrated Lewis Pair C-H Bond Activation.
Légaré Lavergne, Julien; Jayaraman, Arumugam; Misal-Castro, Luis C; Rochette, Etienne; Fontaine, Frédéric-Georges; Journal of the American Chemical Society  (2017) –; doi:10.1021/jacs.7b08143

data_4126567
_publ_section_title
;
 Metal-Free Borylation of Heteroarenes using Ambiphilic Aminoboranes: On
 the Importance of Sterics in Frustrated Lewis Pair C-H Bond Activation.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.7b08143
_journal_year                    2017
_chemical_formula_moiety         'C8 H11 B F3 N'
_chemical_formula_sum            'C8 H11 B F3 N'
_chemical_formula_weight         188.99
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2017-02-27
_audit_creation_method
;
Olex2 1.2
(compiled 2017.02.23 svn.r3390 for OlexSys, GUI svn.r5320)
;
_cell_angle_alpha                90
_cell_angle_beta                 99.184(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.8345(9)
_cell_length_b                   11.0250(12)
_cell_length_c                   10.4161(12)
_cell_measurement_reflns_used    4520
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      32.2790
_cell_measurement_theta_min      2.6336
_cell_volume                     888.16(17)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'SMART APEX II (Bruker, 2014)'
_computing_data_reduction        'SAINT v8.34A'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(1)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.948
_diffrn_measurement_device_type  'bruker SMART CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0352
_diffrn_reflns_av_unetI/netI     0.0303
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.948
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12353
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.948
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.192
_diffrn_reflns_theta_min         2.634
_diffrn_source                   'Sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.126
_exptl_absorpt_correction_T_max  0.7466
_exptl_absorpt_correction_T_min  0.6935
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.0558 before and 0.0477 after correction.
The Ratio of minimum to maximum transmission is 0.9289.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.413
_exptl_crystal_description       block
_exptl_crystal_F_000             392
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.384
_refine_diff_density_min         -0.278
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     120
_refine_ls_number_reflns         3219
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0380
_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^)+(0.0542P)^2^+0.1534P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1024
_refine_ls_wR_factor_ref         0.1083
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2679
_reflns_number_total             3219
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b08143_si_002.cif
_cod_data_source_block           er20170227_0m_a
_cod_database_code               4126567
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.7466
_shelx_estimated_absorpt_t_min   0.6935
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 N1(H1)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5)
2.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C8(H8A,H8B,H8C)
;
_shelx_res_checksum              18637
_shelx_hkl_checksum              25741
_olex2_submission_special_instructions 'No special instructions were received'