Access to amidines via C(sp2)–N coupling of trifluoroborate-iminiums with N-fluorobenzenesulfonimide
Knez, Damijan; Šterman, Andrej; Sosič, Izidor; Perdih, Franc; Nuñez, Gonzalo D.; Knaflič, Tilen; Arčon, Denis; Besora, Maria; Carbó, Jorge J.; Fernández, Elena; Časar, Zdenko; Chemical Science 16 (2025) 12012–12023; doi:10.1039/D5SC02912K

data_1574789
_publ_section_title
;
 Access to amidines via C(sp2)--N coupling of trifluoroborate-iminiums
 with N-fluorobenzenesulfonimide
;
_journal_issue                   26
_journal_name_full               'Chemical Science'
_journal_page_first              12012
_journal_page_last               12023
_journal_paper_doi               10.1039/D5SC02912K
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C14 H14 N2 O3 S'
_chemical_formula_sum            'C14 H14 N2 O3 S'
_chemical_formula_weight         290.33
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2024-11-08 deposited with the CCDC.	2025-05-22 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   14.3193(2)
_cell_length_b                   7.07640(10)
_cell_length_c                   27.0199(3)
_cell_measurement_reflns_used    7464
_cell_measurement_temperature    150.00(10)
_cell_measurement_theta_max      76.3610
_cell_measurement_theta_min      3.2160
_cell_volume                     2737.90(6)
_computing_cell_refinement       'CrysAlisPro 1.171.43.95a (Rigaku OD, 2023)'
_computing_data_collection       'CrysAlisPro 1.171.43.95a (Rigaku OD, 2023)'
_computing_data_reduction        'CrysAlisPro 1.171.43.95a (Rigaku OD, 2023)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.4933
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0555
_diffrn_reflns_av_unetI/netI     0.0323
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            13827
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         70.074
_diffrn_reflns_theta_min         3.271
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    2.190
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.06379
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.95a (Rigaku Oxford Diffraction, 2023)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.409
_exptl_crystal_description       needle
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.255
_refine_diff_density_min         -0.423
_refine_diff_density_rms         0.067
_refine_ls_extinction_coef       0.0032(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         2602
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0452
_refine_ls_R_factor_gt           0.0388
_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^)+(0.0651P)^2^+0.8878P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1026
_refine_ls_wR_factor_ref         0.1106
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2271
_reflns_number_total             2602
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5sc02912k2.cif
_cod_data_source_block           structure2m-cua387
_cod_depositor_comments
'Adding full bibliography for 1574783--1574790.cif.'
_cod_database_code               1574789
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.353
_shelx_estimated_absorpt_t_max   0.735
_shelx_res_checksum              97931