1,2-Migratory ring expansion of a BN-naphthalene.
Mediavilla, Braden A.; Siegler, Maxime A.; Klausen, Rebekka S.; Organic & biomolecular chemistry 23 (2025) 10321–10329; doi:10.1039/d5ob01286d

data_7160828
_publ_section_title
;
 1,2-Migratory ring expansion of a BN-naphthalene.
;
_journal_issue                   45
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              10321
_journal_page_last               10329
_journal_paper_doi               10.1039/d5ob01286d
_journal_volume                  23
_journal_year                    2025
_chemical_formula_moiety         'C18 H20 B N'
_chemical_formula_sum            'C18 H20 B N'
_chemical_formula_weight         261.16
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2025-07-08 deposited with the CCDC.	2025-10-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.63386(7)
_cell_length_b                   8.72627(8)
_cell_length_c                   36.3137(3)
_cell_measurement_reflns_used    17872
_cell_measurement_temperature    243.00(10)
_cell_measurement_theta_max      72.1040
_cell_measurement_theta_min      2.4260
_cell_volume                     3052.81(4)
_computing_cell_refinement       'CrysAlisPro 1.171.42.49 (Rigaku OD, 2022)'
_computing_data_collection       'CrysAlisPro 1.171.42.49 (Rigaku OD, 2022)'
_computing_data_reduction        'CrysAlisPro 1.171.42.49 (Rigaku OD, 2022)'
_computing_molecular_graphics    'SHELXTL v6.10 (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL v6.10 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2019/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT-2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      243.00(10)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy R, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0179
_diffrn_reflns_av_unetI/netI     0.0081
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -44
_diffrn_reflns_number            32666
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         71.900
_diffrn_reflns_theta_min         2.433
_diffrn_source                   'Rotating-anode X-ray tube'
_exptl_absorpt_coefficient_mu    0.484
_exptl_absorpt_correction_T_max  0.910
_exptl_absorpt_correction_T_min  0.858
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.90 (Rigaku Oxford Diffraction, 2023)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.136
_exptl_crystal_description       block
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.543
_exptl_crystal_size_mid          0.313
_exptl_crystal_size_min          0.281
_refine_diff_density_max         0.187
_refine_diff_density_min         -0.237
_refine_diff_density_rms         0.024
_refine_ls_extinction_coef       0.0018(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2019/2 (Sheldrick 2019)'
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         2988
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0458
_refine_ls_R_factor_gt           0.0440
_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^)+(0.0526P)^2^+0.6505P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1185
_refine_ls_wR_factor_ref         0.1197
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2794
_reflns_number_total             2988
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ob01286d2.cif
_cod_data_source_block           N-benzyl_2_isopropylborazaronaphthalene
_cod_depositor_comments
'Adding full bibliography for 7160827--7160829.cif.'
_cod_database_code               7160828
_shelx_shelxl_version_number     2019/3
_oxdiff_exptl_absorpt_empirical_full_min 0.735
_oxdiff_exptl_absorpt_empirical_full_max 1.263
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
- B-factor correction
;
_shelx_res_checksum              62973