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_7129770
_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 H40 B N2 O4'
_chemical_formula_sum            'C28 H40 B N2 O4'
_chemical_formula_weight         479.43
_space_group_crystal_system      orthorhombic
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2021-11-14
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-11-22 deposited with the CCDC.	2022-02-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.325(3)
_cell_length_b                   20.525(5)
_cell_length_c                   10.920(3)
_cell_measurement_reflns_used    8046
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.83
_cell_measurement_theta_min      3.18
_cell_volume                     2762.4(12)
_computing_cell_refinement       'SAINT V8.40A (?, 2016)'
_computing_data_reduction        'SAINT V8.40A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.995
_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  0.1005
_diffrn_reflns_av_unetI/netI     0.0330
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            215531
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         32.196
_diffrn_reflns_theta_min         1.984
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.7463
_exptl_absorpt_correction_T_min  0.6965
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1001 before and 0.0730 after correction. The Ratio of minimum to maximum transmission is 0.9333. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.153
_exptl_crystal_description       needle
_exptl_crystal_F_000             1036
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.720
_refine_diff_density_min         -1.319
_refine_diff_density_rms         0.256
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.110
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         4981
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.110
_refine_ls_R_factor_all          0.1463
_refine_ls_R_factor_gt           0.0979
_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^)+(0.1704P)^2^+1.2959P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2878
_refine_ls_wR_factor_ref         0.3238
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3797
_reflns_number_total             4981
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1cc06816d2.cif
_cod_data_source_block           platon_pl
_cod_database_code               7129770
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.994
_shelx_estimated_absorpt_t_min   0.989
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Fixed Sof: O3(0.6379) O2(0.3621)
3.a Riding coordinates:
 C29(H29A,H29B)
3.b Ternary CH refined with riding coordinates:
 C18(H18), C23(H23)
3.c Secondary CH2 refined with riding coordinates:
 C28(H28A,H28B)
3.d Aromatic/amide H refined with riding coordinates:
 C25(H25), C26(H26), C27(H27)
3.e Idealised Me refined as rotating group:
 C17(H17A,H17B,H17C), C21(H21A,H21B,H21C), C22(H22A,H22B,H22C), C30(H30A,H30B,
 H30C)
;
_olex2_submission_special_instructions 'No special instructions were received'