Monocarborane-stabilized iodonium salts enable regioselective B12-iodination of [CB<sub>11</sub>H<sub>12</sub>]<sup/>.
Jiang, Chennuo; Chen, Lianyu; Jin, Yujie; Liu, Jiyong; Zhang, Kang; Duttwyler, Simon; Dalton transactions (Cambridge, England : 2003) 55 (2026) 1109–1113; doi:10.1039/d5dt02721g

data_7720515
_publ_section_title
;
 Monocarborane-stabilized iodonium salts enable regioselective
 B12-iodination of [CB<sub>11</sub>H<sub>12</sub>]<sup/>.
;
_journal_issue                   3
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1109
_journal_page_last               1113
_journal_paper_doi               10.1039/d5dt02721g
_journal_volume                  55
_journal_year                    2026
_chemical_formula_moiety         'C14 H20 I N4, C H6 B11 Br6, C H2 Cl2'
_chemical_formula_sum            'C16 H28 B11 Br6 Cl2 I N4'
_chemical_formula_weight         1072.59
_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
_atom_sites_solution_primary     dual
_audit_creation_date             2024-12-12
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2025-07-14 deposited with the CCDC.	2025-12-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.9220(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7127(3)
_cell_length_b                   14.5096(5)
_cell_length_c                   24.3406(8)
_cell_measurement_reflns_used    9329
_cell_measurement_temperature    170.00
_cell_measurement_theta_max      60.615
_cell_measurement_theta_min      2.650
_cell_volume                     3429.81(19)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2019/2 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      170.00
_diffrn_detector                 CPAD
_diffrn_detector_area_resol_mean 7.41
_diffrn_detector_type            'Bruker PHOTON III M28'
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'ZJU Bruker D8 VENTURE Metaljet PHOTON III'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_measurement_specimen_support 'MiTeGen micromount'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0299
_diffrn_reflns_av_unetI/netI     0.0246
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            42040
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         60.620
_diffrn_reflns_theta_min         3.160
_diffrn_source                   'liquid Metal X-ray source'
_diffrn_source_current           3.57
_diffrn_source_power             0.24957869999999996
_diffrn_source_type              'Bruker Excillum Metaljet D2+'
_diffrn_source_voltage           69.91
_exptl_absorpt_coefficient_mu    11.521
_exptl_absorpt_correction_T_max  0.7519
_exptl_absorpt_correction_T_min  0.5819
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0703 before and 0.0468 after correction.
The Ratio of minimum to maximum transmission is 0.7739.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    2.077
_exptl_crystal_description       block
_exptl_crystal_F_000             2016
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.540
_refine_diff_density_min         -1.654
_refine_diff_density_rms         0.118
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     365
_refine_ls_number_reflns         7840
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0330
_refine_ls_R_factor_gt           0.0306
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0392P)^2^+6.9994P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0801
_refine_ls_wR_factor_ref         0.0812
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7298
_reflns_number_total             7840
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt02721g2.cif
_cod_data_source_block           241206_exp_cly_15
_cod_database_code               7720515
_shelx_shelxl_version_number     2019/2
_shelx_estimated_absorpt_t_max   0.656
_shelx_estimated_absorpt_t_min   0.424
_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. Uiso/Uaniso restraints and constraints
Uanis(C16) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
3.a Secondary CH2 refined with riding coordinates:
 C16(H16A,H16B)
3.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C6(H6), C9(H9), C10(H10), C12(H12), C13(H13)
3.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C8(H8A,H8B,H8C), C14(H14A,H14B,H14C), C15(H15A,H15B,H15C)
3.d Boron cage BH refined with riding coordinates:
 C1(H1), B1(H1A), B2(H2A), B3(H3A), B4(H4), B5(H5A)
;
_olex2_diffrn_ambient_temperature_device 'Oxford Cryostream 800'
_olex2_submission_special_instructions 'No special instructions were received'