Tuning rotational barriers through substituent modification in catechol-diyl molecular gyrotops.
Kishii, Hyu; Inagaki, Yusuke; Ohara, Kazuaki; Yamaguchi, Kentaro; Setaka, Wataru; Organic & biomolecular chemistry 23 (2025) 10100–10105; doi:10.1039/d5ob01474c

data_7160789
_publ_section_title
;
 Tuning rotational barriers through substituent modification in
 catechol-diyl molecular gyrotops.
;
_journal_issue                   44
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              10100
_journal_page_last               10105
_journal_paper_doi               10.1039/d5ob01474c
_journal_volume                  23
_journal_year                    2025
_chemical_formula_moiety         'C52 H96 O2 Si2'
_chemical_formula_sum            'C52 H96 O2 Si2'
_chemical_formula_weight         809.46
_chemical_melting_point          408.6(5)
_chemical_name_common            C14Ph(OEt)2cage
_chemical_name_systematic        C14Ph(OEt)2cage
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2025-09-12 deposited with the CCDC.	2025-10-13 downloaded from the CCDC.
;
_cell_angle_alpha                71.110(2)
_cell_angle_beta                 85.826(2)
_cell_angle_gamma                63.846(2)
_cell_formula_units_Z            2
_cell_length_a                   12.0393(4)
_cell_length_b                   13.6446(5)
_cell_length_c                   19.0933(8)
_cell_measurement_reflns_used    8438
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      71.7581
_cell_measurement_theta_min      4.1915
_cell_volume                     2654.68(18)
_computing_cell_refinement       'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_data_collection       'Bruker Instrument Service vV6.2.16'
_computing_data_reduction        'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 2020)'
_computing_publication_material  'WinGX (Farrugia, 2020)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'Sir-2019 (IUCr, 2019)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 7.3910
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device_type  'Bruker D8 goniometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0616
_diffrn_reflns_av_unetI/netI     0.0586
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.970
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            37109
_diffrn_reflns_point_group_measured_fraction_full 0.984
_diffrn_reflns_point_group_measured_fraction_max 0.970
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         72.645
_diffrn_reflns_theta_min         3.817
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.850
_exptl_absorpt_correction_T_max  0.94
_exptl_absorpt_correction_T_min  0.74
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Krause, L., Herbst-Irmer, R., Sheldrick, G. M., Stalke, D. (2015).
"Comparison of silver and molybdenum microfocus X-ray sources for
single-crystal structure determination"
J. Appl. Cryst. 48, 3-10.
doi:10.1107/S1600576714022985
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.013
_exptl_crystal_description       prism
_exptl_crystal_F_000             904
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: a mixture of tetrahydrofuran and methanol'
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.070
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.704
_refine_diff_density_min         -0.468
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     543
_refine_ls_number_reflns         10227
_refine_ls_number_restraints     96
_refine_ls_restrained_S_all      1.537
_refine_ls_R_factor_all          0.1683
_refine_ls_R_factor_gt           0.1344
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.2000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3835
_refine_ls_wR_factor_ref         0.4120
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6542
_reflns_number_total             10227
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ob01474c2.cif
_cod_data_source_block           C14Ph(OEt)2cage
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_melting_point' value '135-136 oC' was changed to
'408.6(5)' -- it was converted from degrees Celsius (C) to kelvins
(K), the average value was taken and precision was estimated.

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 7160788--7160790.cif.
;
_cod_database_code               7160789
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.816
_shelx_estimated_absorpt_t_max   0.943
_shelx_res_checksum              7482