Substitution at sp3 boron of a six-membered NHC·BH3: convenient access to a dihydroxyborenium cation
Kundu, Gargi; Ajithkumar, V. S.; Raj, K. Vipin; Vanka, Kumar; Tothadi, Srinu; Sen, Sakya S.; Chemical Communications  (2022) –; doi:10.1039/D1CC06816D

data_7129764
_publ_section_title
;
 Substitution at sp3 boron of a six-membered NHC&#x00B7;BH3: convenient
 access to a dihydroxyborenium cation
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D1CC06816D
_journal_year                    2022
_chemical_formula_moiety         'C28 H41 B I2 N2'
_chemical_formula_sum            'C28 H41 B I2 N2'
_chemical_formula_weight         670.24
_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'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2021-11-18
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-12-02 deposited with the CCDC.	2022-02-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 103.2450(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5036(4)
_cell_length_b                   19.9724(6)
_cell_length_c                   16.0540(6)
_cell_measurement_reflns_used    9187
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      33.32
_cell_measurement_theta_min      2.43
_cell_volume                     2966.15(19)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.961
_diffrn_measured_fraction_theta_max 0.836
_diffrn_measurement_device_type  'Bruker D8 VENTURE Kappa Duo PHOTON II CPAD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0482
_diffrn_reflns_av_unetI/netI     0.0253
_diffrn_reflns_Laue_measured_fraction_full 0.961
_diffrn_reflns_Laue_measured_fraction_max 0.836
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            119156
_diffrn_reflns_point_group_measured_fraction_full 0.961
_diffrn_reflns_point_group_measured_fraction_max 0.836
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         34.297
_diffrn_reflns_theta_min         2.039
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.138
_exptl_absorpt_correction_T_max  0.7467
_exptl_absorpt_correction_T_min  0.5564
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.1413 before and 0.0769 after correction. The Ratio of minimum to maximum transmission is 0.7451. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.501
_exptl_crystal_description       block
_exptl_crystal_F_000             1336
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.1
_refine_diff_density_max         2.177
_refine_diff_density_min         -3.068
_refine_diff_density_rms         0.551
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.222
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     306
_refine_ls_number_reflns         10349
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.222
_refine_ls_R_factor_all          0.0431
_refine_ls_R_factor_gt           0.0350
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0986P)^2^+2.2660P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1352
_refine_ls_wR_factor_ref         0.1510
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9558
_reflns_number_total             10349
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1cc06816d2.cif
_cod_data_source_block           mo_gk_bhi2_4_0m_a
_cod_database_code               7129764
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.815
_shelx_estimated_absorpt_t_min   0.674
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All B(H) groups, All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C0AA(H0AA), C7(H7), C10(H10), B1(H1), C21(H21)
2.b Secondary CH2 refined with riding coordinates:
 C17(H17A,H17B), C18(H18A,H18B), C19(H19A,H19B)
2.c Aromatic/amide H refined with riding coordinates:
 C12(H12), C13(H13), C14(H14), C24(H24), C25(H25), C26(H26)
2.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C8(H8A,H8B,H8C), C9(H9A,H9B,H9C), C15(H15A,H15B,H15C),
 C22(H22A,H22B,H22C), C23(H23A,H23B,H23C), C27(H27A,H27B,H27C), C28(H28A,H28B,
 H28C)
;
_shelx_res_checksum              49715
_shelx_hkl_checksum              23653
_olex2_submission_special_instructions 'No special instructions were received'