Long-range coupling in cyclic silanes.
Ferguson, John T.; Jiang, Qifeng; Marro, Eric A.; Siegler, Maxime A.; Klausen, Rebekka S.; Dalton transactions (Cambridge, England : 2003) 49 (2020) 14951–14961; doi:10.1039/d0dt03163a

data_7705700
_publ_section_title
;
 Long-range coupling in cyclic silanes.
;
_journal_issue                   42
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              14951
_journal_page_last               14961
_journal_paper_doi               10.1039/d0dt03163a
_journal_volume                  49
_journal_year                    2020
_chemical_formula_moiety         'C97 H204 K4 O24 Si16'
_chemical_formula_sum            'C97 H204 K4 O24 Si16'
_chemical_formula_weight         2360.43
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-06-04 deposited with the CCDC.	2020-10-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.786(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.3319(3)
_cell_length_b                   21.5603(5)
_cell_length_c                   23.7767(6)
_cell_measurement_reflns_used    29056
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      27.65
_cell_measurement_theta_min      2.44
_cell_volume                     6734.9(3)
_computing_cell_refinement       'CrysAlisPro 1.171.39.29c (Rigaku OD, 2017)'
_computing_data_collection       'CrysAlisPro 1.171.39.29c (Rigaku OD, 2017)'
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_computing_molecular_graphics    'SHELXTL v6.10 (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL v6.10 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0428
_diffrn_reflns_av_unetI/netI     0.0287
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            101881
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.500
_diffrn_reflns_theta_min         1.902
_exptl_absorpt_coefficient_mu    0.332
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.425
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.29c (Rigaku Oxford Diffraction, 2017)
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            colorless
_exptl_crystal_density_diffrn    1.164
_exptl_crystal_description       rod
_exptl_crystal_F_000             2556
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.09
_refine_diff_density_max         1.001
_refine_diff_density_min         -0.720
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1366
_refine_ls_number_reflns         15458
_refine_ls_number_restraints     3528
_refine_ls_restrained_S_all      1.114
_refine_ls_R_factor_all          0.0643
_refine_ls_R_factor_gt           0.0502
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0304P)^2^+8.2069P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1033
_refine_ls_wR_factor_ref         0.1101
_reflns_Friedel_coverage         0.000
_reflns_number_gt                12767
_reflns_number_total             15458
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt03163a2.cif
_cod_data_source_block           7
_cod_depositor_comments
'Adding full bibliography for 7705698--7705701.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7705700
_shelx_shelxl_version_number     2018/3
_oxdiff_exptl_absorpt_empirical_full_min 0.727
_oxdiff_exptl_absorpt_empirical_full_max 1.480
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              78704