Synthesis of polysubstituted bicyclo[2.1.1]hexanes enabling access to new chemical space.
Reinhold, Marius; Steinebach, Justin; Golz, Christopher; Walker, Johannes C. L.; Chemical science 14 (2023) 9885–9891; doi:10.1039/d3sc03083k

data_1569749
_publ_section_title
;
 Synthesis of polysubstituted bicyclo[2.1.1]hexanes enabling access to new
 chemical space.
;
_journal_issue                   36
_journal_name_full               'Chemical science'
_journal_page_first              9885
_journal_page_last               9891
_journal_paper_doi               10.1039/d3sc03083k
_journal_volume                  14
_journal_year                    2023
_chemical_formula_moiety         'C24 H34 Si2'
_chemical_formula_sum            'C24 H34 Si2'
_chemical_formula_weight         378.69
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-08-12
_audit_creation_method
;FinalCif V108 by Daniel Kratzert, Freiburg 2022,
https://dkratzert.de/finalcif.html
;
_audit_update_record
;
2023-05-10 deposited with the CCDC.	2023-08-30 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.063(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   29.688(2)
_cell_length_b                   6.2911(5)
_cell_length_c                   11.9420(8)
_cell_measurement_reflns_used    9923
_cell_measurement_temperature    100.00
_cell_measurement_theta_max      29.591
_cell_measurement_theta_min      2.744
_cell_volume                     2230.4(3)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_collection
'Bruker BIS V6.2.15/2021-03-15 && APEX4 2021.4-0'
_computing_data_reduction        'SAINT V8.40B (?, 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_environment      N~2~
_diffrn_ambient_temperature      100.00
_diffrn_detector                 CPAD
_diffrn_detector_area_resol_mean 7.41
_diffrn_detector_type            'Bruker PHOTON III'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 VENTURE dual wavelength Mo/Ag'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_measurement_specimen_support 'MiTeGen micromount'
_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  0.0405
_diffrn_reflns_av_unetI/netI     0.0237
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -40
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            20285
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.621
_diffrn_reflns_theta_min         2.744
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.164
_exptl_absorpt_correction_T_max  0.7901
_exptl_absorpt_correction_T_min  0.6881
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1448 before and 0.0579 after correction.
The Ratio of minimum to maximum transmission is 0.8709.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.128
_exptl_crystal_description       plate
_exptl_crystal_F_000             824
_exptl_crystal_recrystallization_method
'Crystallized from dichloromethane by evaporation.'
_exptl_crystal_size_max          0.393
_exptl_crystal_size_mid          0.326
_exptl_crystal_size_min          0.059
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         3121
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0452
_refine_ls_R_factor_gt           0.0377
_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^)+(0.0368P)^2^+2.6742P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0929
_refine_ls_wR_factor_ref         0.0993
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2719
_reflns_number_total             3121
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc03083k2.cif
_cod_data_source_block           mo_1738_cg_0m
_cod_depositor_comments
'Adding full bibliography for 1569748--1569753.cif.'
_cod_database_code               1569749
_shelx_shelxl_version_number     2018/3
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C3(H3A,H3B)
2.b Aromatic/amide H refined with riding coordinates:
 C5(H5), C6(H6), C8(H8), C9(H9)
2.c Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C12(H12A,H12B,H12C)
;
_olex2_submission_special_instructions 'No special instructions were received'
_shelx_estimated_absorpt_t_min   0.938
_shelx_estimated_absorpt_t_max   0.990
_diffrn_measurement_ambient_temperature_device_make 'Oxford Cryostream 800'
_shelx_res_checksum              15417