O,N,B-Containing eight-membered heterocycles by ring expansion of boroles with nitrones
Holger Braunschweig; Ivo Krummenacher; Lisa Mailander; Florian Rauch; Chem.Commun. 51 (2015) 14513–; doi:10.1039/C5cc05368D

data_7117805
_publ_section_title
;
 O,N,B-Containing eight-membered heterocycles by ring expansion of boroles
 with nitrones
;
_journal_name_full               Chem.Commun.
_journal_page_first              14513
_journal_paper_doi               10.1039/C5cc05368D
_journal_volume                  51
_journal_year                    2015
_chemical_formula_moiety         'C45 H40 B N O, C6 H6'
_chemical_formula_sum            'C51 H46 B N O'
_chemical_formula_weight         699.70
_chemical_name_systematic
'(4Z,6E)-2-(tert-butyl)-3,4,5,6,7,8-hexaphenyl-3,8-dihydro-1,2,8-oxazaborocine '
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_secondary   iterative
_audit_creation_method           SHELXL-2014/6
_audit_update_record
;
2015-06-23 deposited with the CCDC.
2015-08-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 102.03(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.873(6)
_cell_length_b                   17.556(4)
_cell_length_c                   16.244(10)
_cell_measurement_reflns_used    9936
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.77
_cell_measurement_theta_min      2.46
_cell_volume                     3869(3)
_computing_cell_refinement       'Saint+ ver. V8.34A (Bruker AXS)'
_computing_data_collection       'APEX2 ver. 2014.9 (Bruker AXS)'
_computing_data_reduction        'Saint+ ver. V8.34A (Bruker AXS)'
_computing_molecular_graphics    'ShelXLe (Huebschle et all, 2011)'
_computing_publication_material  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT (Sheldrick, 2012)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CMOS area detector (Photon 100)'
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 Quest'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0352
_diffrn_reflns_av_unetI/netI     0.0203
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            62903
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         26.372
_diffrn_reflns_theta_min         2.459
_diffrn_source                   'microfocus sealed tube (Incoatec ImS)'
_exptl_absorpt_coefficient_mu    0.070
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6615
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SadAbs 2014/4 (Bruker AXS)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.201
_exptl_crystal_description       block
_exptl_crystal_F_000             1488
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: '
_exptl_crystal_size_max          0.197
_exptl_crystal_size_mid          0.151
_exptl_crystal_size_min          0.117
_refine_diff_density_max         0.362
_refine_diff_density_min         -0.212
_refine_diff_density_rms         0.044
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     490
_refine_ls_number_reflns         7856
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0388
_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^)+(0.0415P)^2^+1.8243P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0914
_refine_ls_wR_factor_ref         0.0964
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                6860
_reflns_number_total             7856
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5cc05368d2.cif
_cod_data_source_block           7
_cod_database_code               7117805
_shelx_estimated_absorpt_t_min   0.986
_shelx_estimated_absorpt_t_max   0.992
_shelxl_version_number           2014/6
_shelx_res_checksum              50120