Facile π-extension of boron-doped polycyclic aromatic hydrocarbons by frustrated Lewis pair alkynylation.
Chang, Ke-Wei; Lai, Ting-Yi; Chin, To-Jen; Anitha, Mandala; Liu, Yi-Hung; Ishiwari, Fumitaka; Saeki, Akinori; Farrell, Jeffrey M.; Chemical communications (Cambridge, England)  (2025) –; doi:10.1039/d5cc05480j

data_7135146
_publ_section_title
;
 Facile &#x3c0;-extension of boron-doped polycyclic aromatic hydrocarbons
 by frustrated Lewis pair alkynylation.
;
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_paper_doi               10.1039/d5cc05480j
_journal_year                    2025
_chemical_formula_sum            'C38 H26 B N'
_chemical_formula_weight         507.41
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2025-08-25 deposited with the CCDC.	2025-10-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 116.3914(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.2605(2)
_cell_length_b                   31.4635(7)
_cell_length_c                   10.1892(2)
_cell_measurement_reflns_used    9965
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      70.02
_cell_measurement_theta_min      2.81
_cell_volume                     2659.39(10)
_computing_cell_refinement       'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_data_collection       'Bruker APEX6'
_computing_data_reduction        'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2019/2 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker D8 VENTURE, PhotonIII_C28'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0455
_diffrn_reflns_av_unetI/netI     0.0340
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            29900
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         70.042
_diffrn_reflns_theta_min         2.809
_diffrn_source                   'microfocus sealed tube'
_exptl_absorpt_coefficient_mu    0.549
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8841
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick, G. M., Stalke, D. (2015). 
"Comparison of silver and molybdenum microfocus X-ray sources for 
single-crystal structure determination" 
J. Appl. Cryst. 48, 3-10. 
doi:10.1107/S1600576714022985 
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_description       plate
_exptl_crystal_F_000             1064
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.675
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         4997
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0430
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0659P)^2^+0.8888P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1163
_refine_ls_wR_factor_ref         0.1198
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4583
_reflns_number_total             4997
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc05480j2.cif
_cod_data_source_block           ic22669
_cod_depositor_comments
;
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 8170 2020-07-09 18:12:32Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7135146
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_min   0.908
_shelx_estimated_absorpt_t_max   0.984
_shelx_res_checksum              9442
_shelx_hkl_checksum              77410