Metal-free regioselective B–O coupling in carboranes for constructing aggregation-induced emission luminogens
Li, Xinrui; Zhou, Ningning; Tu, Deshuang; Lu, Chang-sheng; Yan, Hong; Chemical Communications  (2026) –; doi:10.1039/D5CC03944D

data_7135293
_publ_section_title
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 Metal-free regioselective B--O coupling in carboranes for constructing
 aggregation-induced emission luminogens
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_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D5CC03944D
_journal_year                    2026
_chemical_formula_moiety         'C7 H14 B9 Cl2 N'
_chemical_formula_sum            'C7 H14 B9 Cl2 N'
_chemical_formula_weight         280.519
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_Int_Tables_number      15
_audit_creation_date             2025-09-23
_audit_creation_method
;
Olex2 1.5
(compiled 2025.07.13 svn.rb7424aed for OlexSys, GUI svn.r7314)
;
_audit_update_record
;
2025-09-25 deposited with the CCDC.	2025-11-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 96.446(6)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   20.226(5)
_cell_length_b                   7.0287(16)
_cell_length_c                   19.947(5)
_cell_measurement_reflns_used    2419
_cell_measurement_temperature    193.0
_cell_measurement_theta_max      26.85
_cell_measurement_theta_min      2.72
_cell_volume                     2817.8(12)
_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  'olex2.refine 1.5 (Bourhis et al., 2015)'
_diffrn_ambient_temperature      193.0
_diffrn_measured_fraction_theta_full 0.9920
_diffrn_measured_fraction_theta_max 0.9920
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0666
_diffrn_reflns_av_unetI/netI     0.0703
_diffrn_reflns_Laue_measured_fraction_full 0.9920
_diffrn_reflns_Laue_measured_fraction_max 0.9920
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            10090
_diffrn_reflns_point_group_measured_fraction_full 0.9920
_diffrn_reflns_point_group_measured_fraction_max 0.9920
_diffrn_reflns_theta_full        24.9969
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.03
_diffrn_source_current           40.0
_diffrn_source_power             1.8
_diffrn_source_voltage           45.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.432
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.4611
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1150 before and 0.0818 after correction.
The Ratio of minimum to maximum transmission is 0.6184.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_description       block
_exptl_crystal_F_000             1138.737
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.8670
_refine_diff_density_min         -0.5666
_refine_diff_density_rms         0.1251
_refine_ls_d_res_high            0.8410
_refine_ls_d_res_low             10.0489
_refine_ls_goodness_of_fit_ref   0.9950
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    20
_refine_ls_number_parameters     188
_refine_ls_number_reflns         2468
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.9950
_refine_ls_R_factor_all          0.1166
_refine_ls_R_factor_gt           0.0851
_refine_ls_shift/su_max          0.0008
_refine_ls_shift/su_mean         0.0001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.2P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2367
_refine_ls_wR_factor_ref         0.2660
_reflns_Friedel_coverage         0.0
_reflns_limit_h_max              23
_reflns_limit_h_min              -24
_reflns_limit_k_max              8
_reflns_limit_k_min              0
_reflns_limit_l_max              23
_reflns_limit_l_min              0
_reflns_number_gt                1700
_reflns_number_total             2468
_reflns_threshold_expression     I>=2u(I)
_cod_data_source_file            d5cc03944d2.cif
_cod_data_source_block           aaaaa_a
_cod_original_cell_volume        2817.8(11)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7135293
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All B(H) groups, All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C006(H006), C007(H007), C008(H008), C009(H009), C00A(H00A)
2.b Boron cage BH refined with riding coordinates:
 B00E(H00E), B00G(H00G), B00H(H00H), B00I(H00I), B00J(H00J)
;
_olex2_refine_details
;
Refinement using NoSpherA2, an implementation of
NOn-SPHERical Atom-form-factors in Olex2.
Please cite:
F. Kleemiss et al. Chem. Sci. DOI 10.1039/D0SC05526C - 2021
NoSpherA2 implementation of HAR makes use of
tailor-made aspherical atomic form factors calculated
on-the-fly from a Hirshfeld-partitioned electron density (ED) - not from
spherical-atom form factors.

The ED is calculated from a gaussian basis set single determinant SCF
wavefunction - either Hartree-Fock or DFT using selected funtionals
- for a fragment of the crystal.
This fragment can be embedded in an electrostatic crystal field by employing cluster charges
or modelled using implicit solvation models, depending on the software used.
The following options were used:
   SOFTWARE:       Thakkar IAM
   PARTITIONING:   NoSpherA2
   INT ACCURACY:   Normal
   METHOD:         B3LYP
   BASIS SET:      def2-SVP
   CHARGE:         0
   MULTIPLICITY:   0
   DATE:           2025-09-23_23-24-04
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_olex2_submission_special_instructions 'No special instructions were received'