Selective Si−C(sp3) Bond Cleavage of Silyl−Bridged Amido Alkyl Ligand in an Yttrium Complex
Cai, Jiamin; Zhang, Jie; Zhou, Xigeng; Dalton Transactions  (2023) –; doi:10.1039/D3DT00149K

data_7712342
_publ_section_title
;
 Selective Si&#x2212;C(sp3) Bond Cleavage of Silyl&#x2212;Bridged Amido
 Alkyl Ligand in an Yttrium Complex
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D3DT00149K
_journal_year                    2023
_chemical_formula_moiety         'C32 H53 B N7 O2 Si3 Y, C7 H8'
_chemical_formula_sum            'C39 H61 B N7 O2 Si3 Y'
_chemical_formula_weight         843.93
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2022-02-16
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_audit_update_record
;
2022-09-26 deposited with the CCDC.	2023-02-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.992(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.3751(11)
_cell_length_b                   15.4894(10)
_cell_length_c                   16.8249(10)
_cell_measurement_reflns_used    9307
_cell_measurement_temperature    173.01
_cell_measurement_theta_max      56.995
_cell_measurement_theta_min      3.329
_cell_volume                     4517.1(5)
_computing_cell_refinement       'SAINT V8.38A (Bruker, 2018)'
_computing_data_reduction        'SAINT V8.38A (Bruker, 2018)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173.01
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34138
_diffrn_reflns_av_R_equivalents  0.0707
_diffrn_reflns_av_unetI/netI     0.0419
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            67326
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         57.072
_diffrn_reflns_theta_min         3.329
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           2.86
_diffrn_source_power             0.1999426
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           69.91
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.916
_exptl_absorpt_correction_T_max  0.7512
_exptl_absorpt_correction_T_min  0.6496
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1144 before and 0.0813 after correction.
The Ratio of minimum to maximum transmission is 0.8647.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.241
_exptl_crystal_description       block
_exptl_crystal_F_000             1784
_exptl_crystal_size_max          0.86
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.761
_refine_diff_density_min         -0.429
_refine_diff_density_rms         0.151
_refine_ls_extinction_coef       0.00203(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     497
_refine_ls_number_reflns         9246
_refine_ls_number_restraints     21
_refine_ls_restrained_S_all      1.112
_refine_ls_R_factor_all          0.0431
_refine_ls_R_factor_gt           0.0355
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0505P)^2^+1.5902P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0886
_refine_ls_wR_factor_ref         0.0979
_reflns_Friedel_coverage         0.000
_reflns_number_gt                8050
_reflns_number_total             9246
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt00149k2.cif
_cod_data_source_block           ga_210323aa
_cod_database_code               7712342
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.963
_shelx_estimated_absorpt_t_min   0.290
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All B(H) groups, All C(H) groups, All C(H,H) groups, All Si(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
Uanis(C17) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
3. Rigid body (RIGU) restrains
 C19, C18, C17, C16
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
4.a Ternary CH refined with riding coordinates:
 B1(H1)
4.b Secondary CH2 refined with riding coordinates:
 C16(H16A,H16B), C17(H17A,H17B), C18(H18A,H18B), C19(H19A,H19B)
4.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C8(H8), C13(H13), C21(H21), C28(H28), C29(H29), C30(H30), C31(H31),
 C32(H32), C33(H33), C35(H35), C34(H34), C37(H37), C36(H36)
4.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C5(H5A,H5B,H5C), C6(H6A,H6B,H6C), C10(H10A,H10B,H10C),
 C11(H11A,H11B,H11C), C15(H15A,H15B,H15C), C22(H22A,H22B,H22C), C23(H23A,H23B,
 H23C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C), C26(H26A,H26B,H26C), C39(H39A,
 H39B,H39C)
;
_olex2_submission_special_instructions 'No special instructions were received'