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_7135145
_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_moiety         'C48 H38 B2'
_chemical_formula_sum            'C48 H38 B2'
_chemical_formula_weight         636.40
_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             2025-05-26
_audit_creation_method
;
Olex2 1.5
(compiled 2025.04.05 svn.rf049d14d for OlexSys, GUI svn.r7224)
;
_audit_update_record
;
2025-08-25 deposited with the CCDC.	2025-10-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 103.451(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   27.7844(13)
_cell_length_b                   3.9198(2)
_cell_length_c                   32.0442(15)
_cell_measurement_reflns_used    9839
_cell_measurement_temperature    100.00
_cell_measurement_theta_max      70.3341
_cell_measurement_theta_min      2.4004
_cell_volume                     3394.2(3)
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2019/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100.00
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker AXS D8 VENTURE, PhotonIII_C28'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0351
_diffrn_reflns_av_unetI/netI     0.0290
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            28752
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.985
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         70.334
_diffrn_reflns_theta_min         1.898
_diffrn_source_current           1.0
_diffrn_source_power             0.05
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.521
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8978
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1202 before and 0.0500 after correction.
The Ratio of minimum to maximum transmission is 0.8978.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            black
_exptl_crystal_colour_primary    black
_exptl_crystal_density_diffrn    1.245
_exptl_crystal_description       plate
_exptl_crystal_F_000             1344
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.286
_refine_diff_density_min         -0.255
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     457
_refine_ls_number_reflns         6380
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0484
_refine_ls_R_factor_gt           0.0424
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0683P)^2^+1.3119P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1135
_refine_ls_wR_factor_ref         0.1191
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5598
_reflns_number_total             6380
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc05480j2.cif
_cod_data_source_block           cu_ic23148_0m
_cod_database_code               7135145
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.926
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C39(H39), C37(H37), C46(H46), C36(H36), C34(H34), C14(H14), C13(H13),
 C42(H42), C43(H43), C44(H44), C27(H27), C45(H45), C20(H20), C28(H28), C9(H9),
 C5(H5), C31(H31), C30(H30), C29(H29), C22(H22)
2.b Idealised Me refined as rotating group:
 C3(H3A,H3B,H3C), C26(H26A,H26B,H26C), C25(H25A,H25B,H25C), C2(H2A,H2B,H2C),
 C1(H1A,H1B,H1C), C24(H24A,H24B,H24C)
;
_shelx_res_checksum              29510
_shelx_hkl_checksum              72613
_olex2_submission_original_sample_id ic23148
_olex2_submission_special_instructions 'No special instructions were received'