A stable silylborane with diminished boron-Lewis acidity
Yoshida, Hiroto; Izumi, Yuki; Hiraoka, Yuta; Nakanishi, Kazuki; Nakamoto, Masaaki; Hatano, Sayaka; Abe, Manabu; Dalton Transactions  (2022) –; doi:10.1039/D2DT00962E

data_7709942
_publ_section_title
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 A stable silylborane with diminished boron-Lewis acidity
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D2DT00962E
_journal_year                    2022
_chemical_formula_sum            'C18 H19 B N2 Si'
_chemical_formula_weight         302.25
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
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2021-11-09 deposited with the CCDC.	2022-04-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.0647(16)
_cell_length_b                   11.425(3)
_cell_length_c                   20.803(5)
_cell_measurement_reflns_used    3341
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.10
_cell_measurement_theta_min      3.05
_cell_volume                     1679.1(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0267
_diffrn_reflns_av_unetI/netI     0.0350
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            8946
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.394
_diffrn_reflns_theta_min         1.958
_exptl_absorpt_coefficient_mu    0.137
_exptl_absorpt_correction_T_max  0.999
_exptl_absorpt_correction_T_min  0.966
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.196
_exptl_crystal_description       plate
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.214
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details
;
 Flack x determined using 1204 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.05(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         3420
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0397
_refine_ls_R_factor_gt           0.0332
_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^)+(0.0314P)^2^+0.4112P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0731
_refine_ls_wR_factor_ref         0.0760
_reflns_Friedel_coverage         0.721
_reflns_Friedel_fraction_full    0.995
_reflns_Friedel_fraction_max     0.990
_reflns_number_gt                3100
_reflns_number_total             3420
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2dt00962e2.cif
_cod_data_source_block           compound_1a
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               7709942
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.973
_shelx_estimated_absorpt_t_max   0.999
_shelx_res_checksum              68041