Diamidocarbene Induced B‒H Activation: A New Class of Initiator-Free Olefin Hydroboration Reagents
Lastovickova, Dominika N.; Bielawski, Christopher W.; Organometallics 35 (2016) 706–; doi:10.1021/acs.organomet.5b00997

data_4088307
_publ_section_title
;
 Diamidocarbene Induced B--H Activation: A New Class of Initiator-Free
 Olefin Hydroboration Reagents
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              706
_journal_paper_doi               10.1021/acs.organomet.5b00997
_journal_volume                  35
_journal_year                    2016
_chemical_formula_moiety         'C27 H43 B1 N3 O2'
_chemical_formula_sum            'C27 H43 B N3 O2'
_chemical_formula_weight         452.45
_chemical_name_common            'DAC-BH3NMe3 (1NMe3)'
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 109.329(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.8352(12)
_cell_length_b                   12.6874(17)
_cell_length_c                   12.1513(17)
_cell_measurement_temperature    150(2)
_cell_volume                     1285.3(3)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku SCX-Mini with Mercury 2+ CCD'
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0437
_diffrn_reflns_av_unetI/netI     0.0344
_diffrn_reflns_Laue_measured_fraction_full 0.966
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            18790
_diffrn_reflns_point_group_measured_fraction_full 0.967
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         24.987
_diffrn_reflns_theta_min         3.211
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7748
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Abscor.  T. Higashi (2001). The Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.169
_exptl_crystal_description       block
_exptl_crystal_F_000             494
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.157
_refine_diff_density_min         -0.158
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details
;
 Flack x determined using 2014 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   1.7(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     317
_refine_ls_number_reflns         4504
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0335
_refine_ls_R_factor_gt           0.0318
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0476P)^2^+0.2022P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0807
_refine_ls_wR_factor_ref         0.0818
_reflns_Friedel_coverage         0.906
_reflns_Friedel_fraction_full    0.967
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                4332
_reflns_number_total             4504
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            om5b00997_si_002.cif
_cod_data_source_block           DAC-BH3NMe3
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4088307
_shelxl_version_number           2014-3
_shelx_res_checksum              61591
_shelx_hkl_checksum              7625