Silole Allylic Anions Instead of Silanides
Pöcheim, Alexander; Albers, Lena; Müller, Thomas; Baumgartner, Judith; Marschner, Christoph; Dalton Transactions  (2021) –; doi:10.1039/D1DT02363B

data_7708734
_publ_section_title
;
 Silole Allylic Anions Instead of Silanides
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D1DT02363B
_journal_year                    2021
_chemical_formula_moiety         'C45.038 H93.038 N Si11'
_chemical_formula_sum            'C45 H93 N Si11'
_chemical_formula_weight         957.19
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2021-10-24
_audit_creation_method
;
Olex2 1.5
(compiled 2021.10.07 svn.r9718050b for OlexSys, GUI svn.r6410)
;
_cell_angle_alpha                90
_cell_angle_beta                 96.287(8)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   37.205(10)
_cell_length_b                   13.523(3)
_cell_length_c                   25.072(6)
_cell_measurement_reflns_used    990
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.21
_cell_measurement_theta_min      2.25
_cell_volume                     12538(5)
_computing_cell_refinement       'SAINT v6.45A (Bruker, 2003)'
_computing_data_reduction        'SAINT v6.45A (Bruker, 2003)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100.00
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0945
_diffrn_reflns_av_unetI/netI     0.0865
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       44
_diffrn_reflns_limit_h_min       -44
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            43762
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        24.998
_diffrn_reflns_theta_max         24.998
_diffrn_reflns_theta_min         1.603
_diffrn_source_current           5.0
_diffrn_source_power             0.1
_diffrn_source_voltage           20.0
_exptl_absorpt_coefficient_mu    0.256
_exptl_absorpt_correction_T_max  0.9724
_exptl_absorpt_correction_T_min  0.578308
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS v.2.10 (Bruker,2003) was used for absorption correction.
R(int) was 0.0896 before and 0.0563 after correction.
The Ratio of minimum to maximum transmission is 0.5783.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.014
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             4192
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.597
_refine_diff_density_min         -0.468
_refine_diff_density_rms         0.114
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.009
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     546
_refine_ls_number_reflns         11026
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.009
_refine_ls_R_factor_all          0.1537
_refine_ls_R_factor_gt           0.1381
_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^)+(0.0337P)^2^+457.5678P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2682
_refine_ls_wR_factor_ref         0.2779
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9846
_reflns_number_total             11026
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1dt02363b3.cif
_cod_data_source_block           sad1_5b_1295j
_cod_database_code               7708734
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.972
_shelx_estimated_absorpt_t_min   0.896
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
C23: within 2A with sigma of 0.04 and sigma for terminal atoms of 0.08 within 2A
Uanis(C23) \\sim Ueq: with sigma of 0.1 and sigma for terminal atoms of 0.2
3. Others
 Sof(C23)=Sof(H23)=FVAR(1)
4.a Ternary CH refined with riding coordinates:
 C2(H2), C6(H6), C11(H11)
4.b Aromatic/amide H refined with riding coordinates:
 C22(H22), C23(H23), C29(H29), C30(H30), C31(H31), C32(H32), C33(H33), C45(H45)
4.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C3(H3A,H3B,H3C), C4(H4A,H4B,H4C), C5(H5A,H5B,H5C), C7(H7A,
 H7B,H7C), C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C14(H14A,H14B,H14C),
 C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C18(H18A,H18B,
 H18C), C19(H19A,H19B,H19C), C25(H25A,H25B,H25C), C26(H26A,H26B,H26C), C27(H27A,
 H27B,H27C), C34(H34A,H34B,H34C), C35(H35A,H35B,H35C), C36(H36A,H36B,H36C),
 C37(H37A,H37B,H37C), C38(H38A,H38B,H38C), C39(H39A,H39B,H39C), C40(H40A,H40B,
 H40C), C41(H41A,H41B,H41C), C42(H42A,H42B,H42C), C43(H43A,H43B,H43C), C44(H44A,
 H44B,H44C)
;
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_shelx_res_checksum              29829
_shelx_hkl_checksum              83935
_shelx_fab_checksum              94821
_olex2_submission_special_instructions 'No special instructions were received'