Oxazoline scaffold in synthesis of benzosiloxaboroles and related ring-expanded heterocycles: diverse reactivity, structural peculiarities and antimicrobial activity
Krajewska, Joanna; Nowicki, Krzysztof; Durka, Krzysztof; Marek-Urban, Paulina H.; Wińska, Patrycja; Stępniewski, Tomasz; Woźniak, Krzysztof; Laudy, Agnieszka E.; Luliński, Sergiusz; RSC Advances 12 (2022) 23099–23117; doi:10.1039/D2RA03910A

data_7245339
_publ_section_title
;
 Oxazoline scaffold in synthesis of benzosiloxaboroles and related
 ring-expanded heterocycles: diverse reactivity, structural peculiarities
 and antimicrobial activity
;
_journal_issue                   36
_journal_name_full               'RSC Advances'
_journal_page_first              23099
_journal_page_last               23117
_journal_paper_doi               10.1039/D2RA03910A
_journal_volume                  12
_journal_year                    2022
_chemical_formula_moiety         'C17 H28 B2 F N O3 Si'
_chemical_formula_sum            'C17 H28 B2 F N O3 Si'
_chemical_formula_weight         363.11
_chemical_melting_point          520
_chemical_name_systematic
;
10-(tert-butyl)-7-fluoro-3,3,8,8-tetramethyl-2,3-dihydro-4H,8H-1,9,11-trioxa-3a-aza-8-sila-10,11a,l4-diborabenzo[ij]cyclopenta[c]azulene
;
_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   mixed
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2022-04-13 deposited with the CCDC.	2022-08-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.799(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.5789(3)
_cell_length_b                   9.7201(3)
_cell_length_c                   17.4568(5)
_cell_measurement_reflns_used    4693
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      72.4070
_cell_measurement_theta_min      5.0450
_cell_volume                     1963.76(10)
_computing_cell_refinement       'CrysAlisPro 1.171.40.84a (Rigaku OD, 2020)'
_computing_data_collection       'CrysAlisPro 1.171.40.84a (Rigaku OD, 2020)'
_computing_data_reduction        'CrysAlisPro 1.171.40.84a (Rigaku OD, 2020)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.01(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 5.2195
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, Atlas'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0233
_diffrn_reflns_av_unetI/netI     0.0295
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.974
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            7510
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.974
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.571
_diffrn_reflns_theta_min         5.069
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    1.259
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.717
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.84a (Rigaku Oxford Diffraction, 2020)
Numerical absorption correction based on gaussian integration over
a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_description       block
_exptl_crystal_F_000             776
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: CHCl3'
_exptl_crystal_size_max          0.333
_exptl_crystal_size_mid          0.115
_exptl_crystal_size_min          0.066
_refine_diff_density_max         0.334
_refine_diff_density_min         -0.271
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.975
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         3794
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.0422
_refine_ls_R_factor_gt           0.0358
_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^)+(0.0435P)^2^+1.1643P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0899
_refine_ls_wR_factor_ref         0.0950
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3333
_reflns_number_total             3794
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ra03910a7.cif
_cod_data_source_block           4a
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7245339
_oxdiff_exptl_absorpt_empirical_full_min 0.718
_oxdiff_exptl_absorpt_empirical_full_max 1.312
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelxl_version_number           2013-4
_shelx_res_checksum              19768