Donor free stibenium cation as efficient cyanosilylation catalyst
Sen, Nilanjana; Gothe, Prachi; Sarkar, Pallavi; Das, Shubhajit; Tothadi, Srinu; Pati, Swapan K.; Khan, Shabana; Chemical Communications  (2022) –; doi:10.1039/D2CC03158B

data_7130591
_publ_section_title
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 Donor free stibenium cation as efficient cyanosilylation catalyst
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D2CC03158B
_journal_year                    2022
_chemical_formula_moiety         'C17 H26 F3 N2 O3 S Sb'
_chemical_formula_sum            'C17 H26 F3 N2 O3 S Sb'
_chemical_formula_weight         517.21
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2022-07-13
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2022-08-01 deposited with the CCDC.	2022-08-17 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.050(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.8486(6)
_cell_length_b                   11.4722(9)
_cell_length_c                   9.9293(8)
_cell_measurement_reflns_used    9285
_cell_measurement_temperature    150
_cell_measurement_theta_max      28.35
_cell_measurement_theta_min      2.72
_cell_volume                     1004.04(13)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'olex2.solve (Bourhis et al., 2015)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_unetI/netI     0.0206
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            31749
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        24.997
_diffrn_reflns_theta_max         24.997
_diffrn_reflns_theta_min         2.719
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.525
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6311
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1332 before and 0.0749 after correction. The Ratio of minimum to maximum transmission is 0.8463. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.711
_exptl_crystal_description       needle
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.313
_refine_diff_density_min         -0.336
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details
;
 Flack x determined using 1581 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.015(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     250
_refine_ls_number_reflns         3527
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0166
_refine_ls_R_factor_gt           0.0150
_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^)+(0.0176P)^2^+0.0476P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0325
_refine_ls_wR_factor_ref         0.0331
_reflns_Friedel_coverage         0.897
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                3409
_reflns_number_total             3527
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2cc03158b2.cif
_cod_data_source_block           a1_b
_cod_database_code               7130591
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.914
_shelx_estimated_absorpt_t_min   0.666
_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:
 C7(H7A,H7B), C12(H12A,H12B)
2.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C3(H3)
2.c Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C), C11(H11A,H11B,H11C), C13(H13A,H13B,H13C), C15(H15A,H15B,
 H15C), C10(H10A,H10B,H10C), C16(H16A,H16B,H16C)
;
_shelx_res_checksum              77124
_shelx_hkl_checksum              94548
_olex2_submission_special_instructions 'No special instructions were received'