Azadistibiridines and stabilised-iminobismuthane: reactivity of small inorganic rings in heavy main group chemistry.
Palui, Prasenjit; Bollenbeck, Matthias; Meleschko, Daniel; Brehm, Philipp; Gomila, Rosa M.; Schnakenburg, Gregor; Frontera, Antonio; Bismuto, Alessandro; Chemical science 16 (2025) 16894–16903; doi:10.1039/d5sc03416g

data_1575511
_publ_section_title
;
 Azadistibiridines and stabilised-iminobismuthane: reactivity of small
 inorganic rings in heavy main group chemistry.
;
_journal_issue                   36
_journal_name_full               'Chemical science'
_journal_page_first              16894
_journal_page_last               16903
_journal_paper_doi               10.1039/d5sc03416g
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C38 H68 Bi N3 O2 S Si4'
_chemical_formula_sum            'C38 H68 Bi N3 O2 S Si4'
_chemical_formula_weight         952.35
_chemical_name_systematic        PP-197
_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
_atom_sites_solution_primary     dual
_audit_creation_date             2025-02-24
_audit_creation_method
;
Olex2 1.5
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2025-04-01 deposited with the CCDC.	2025-08-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.571(12)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.785(4)
_cell_length_b                   13.602(5)
_cell_length_c                   40.116(16)
_cell_measurement_reflns_used    2647
_cell_measurement_temperature    100.00
_cell_measurement_theta_max      20.064
_cell_measurement_theta_min      2.141
_cell_volume                     4771(3)
_computing_cell_refinement       'SAINT V8.41 (?, 2016)'
_computing_data_reduction        'SAINT V8.41 (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100.00
_diffrn_detector                 'Bruker Photon100 detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1050
_diffrn_reflns_av_unetI/netI     0.1611
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -48
_diffrn_reflns_number            20235
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.249
_diffrn_reflns_theta_min         2.040
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.0
_diffrn_source_power             0.05
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    3.871
_exptl_absorpt_correction_T_max  0.7465
_exptl_absorpt_correction_T_min  0.5974
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1491 before and 0.0948 after correction.
The Ratio of minimum to maximum transmission is 0.8003.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_description       plate
_exptl_crystal_F_000             1952
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.02
_refine_diff_density_max         2.386
_refine_diff_density_min         -2.550
_refine_diff_density_rms         0.646
_refine_ls_extinction_coef       0.0018(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2019/1 (Sheldrick 2019)'
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     464
_refine_ls_number_reflns         8854
_refine_ls_number_restraints     420
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1318
_refine_ls_R_factor_gt           0.0861
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0002P)^2^+75.4576P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1783
_refine_ls_wR_factor_ref         0.2050
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5798
_reflns_number_total             8854
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5sc03416g3.cif
_cod_data_source_block           6
_cod_depositor_comments
'Adding full bibliography for 1575509--1575515.cif.'
_cod_database_code               1575511
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_max   0.927
_shelx_estimated_absorpt_t_min   0.576
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.9933(5)
 0.0067(5)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
3. Uiso/Uaniso restraints and constraints
C32 \\sim C33 \\sim C34 \\sim C35 \\sim C36 \\sim C37 \\sim C38: within 2A with
sigma of 0.01 and sigma for terminal atoms of 0.02 within 2A
4. Rigid body (RIGU) restrains
 All non-hydrogen atoms
 with sigma for 1-2 distances of 0.001 and sigma for 1-3 distances of 0.001
5.a Ternary CH refined with riding coordinates:
 C14(H14), C25(H25)
5.b Aromatic/amide H refined with riding coordinates:
 C10(H10), C12(H12), C33(H33), C34(H34), C36(H36), C37(H37)
5.c Idealised Me refined as rotating group:
 C4(H4A,H4B,H4C), C5(H5A,H5B,H5C), C6(H6A,H6B,H6C), C7(H7A,H7B,H7C), C15(H15A,
 H15B,H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C18(H18A,H18B,H18C),
 C19(H19A,H19B,H19C), C20(H20A,H20B,H20C), C22(H22A,H22B,H22C), C23(H23A,H23B,
 H23C), C24(H24A,H24B,H24C), C26(H26A,H26B,H26C), C27(H27A,H27B,H27C), C28(H28A,
 H28B,H28C), C29(H29A,H29B,H29C), C30(H30A,H30B,H30C), C31(H31A,H31B,H31C),
 C38(H38A,H38B,H38C)
;
_shelx_res_checksum              12934
_olex2_submission_special_instructions 'No special instructions were received'