Bis-aminocyclopropenylidene carbene borane catalyzed imine hydrogenation.
Huchenski, Blake S. N.; Christopherson, Cheyenne J.; Robertson, Katherine N.; Speed, Alexander W. H.; Organic & biomolecular chemistry 17 (2019) 6158–6164; doi:10.1039/c9ob01053j

data_7156897
_publ_section_title
;
 Bis-aminocyclopropenylidene carbene borane catalyzed imine hydrogenation.
;
_journal_issue                   25
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6158
_journal_page_last               6164
_journal_paper_doi               10.1039/c9ob01053j
_journal_volume                  17
_journal_year                    2019
_chemical_formula_moiety         'C27 H39 B N2'
_chemical_formula_sum            'C27 H39 B N2'
_chemical_formula_weight         402.41
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/1
_audit_update_record
;
2019-05-06 deposited with the CCDC.    2019-06-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.467(4)
_cell_length_b                   9.736(2)
_cell_length_c                   14.482(3)
_cell_measurement_reflns_used    8596
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      27.44
_cell_measurement_theta_min      2.33
_cell_volume                     2462.8(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      125(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0532
_diffrn_reflns_av_unetI/netI     0.0489
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.966
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            28757
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.946
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.951
_diffrn_reflns_theta_min         2.332
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6979
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker 2009'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.085
_exptl_crystal_description       irregular
_exptl_crystal_F_000             880
_exptl_crystal_size_max          0.350
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.174
_refine_diff_density_min         -0.152
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
;
 Flack x determined using 1827 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -2.0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     350
_refine_ls_number_reflns         6169
_refine_ls_number_restraints     202
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0681
_refine_ls_R_factor_gt           0.0440
_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^)+(0.0339P)^2^+0.2797P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0817
_refine_ls_wR_factor_ref         0.0914
_reflns_Friedel_coverage         0.887
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.924
_reflns_number_gt                4740
_reflns_number_total             6169
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob01053j2.cif
_cod_data_source_block           AS001_cmpd24
_cod_depositor_comments
'Adding full bibliography for 7156897--7156899.cif.'
_cod_original_cell_volume        2462.9(10)
_cod_database_code               7156897
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_min   0.979
_shelx_estimated_absorpt_t_max   0.988
_shelx_res_checksum              92888