Establishing the correlation between catalytic performance and N→Sb donor-acceptor interaction: systematic assessment of azastibocine halide derivatives as water tolerant Lewis acids.
Lei, Jian; Peng, Lingteng; Qiu, Renhua; Liu, Yongping; Chen, Yi; Au, Chak-Tong; Yin, Shuang-Feng; Dalton transactions (Cambridge, England : 2003) 48 (2019) 8478–8487; doi:10.1039/c9dt01100e

data_7701739
_publ_section_title
;
 Establishing the correlation between catalytic performance and
 N\\rightarrow Sb donor-acceptor interaction: systematic assessment of
 azastibocine halide derivatives as water tolerant Lewis acids.
;
_journal_issue                   23
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8478
_journal_page_last               8487
_journal_paper_doi               10.1039/c9dt01100e
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C20 H17 I N Sb'
_chemical_formula_sum            'C20 H17 I N Sb'
_chemical_formula_weight         520.00
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2013-07-10 deposited with the CCDC.	2019-05-08 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 95.7840(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.1637(3)
_cell_length_b                   10.9833(4)
_cell_length_c                   18.0957(7)
_cell_measurement_reflns_used    1051
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.64
_cell_measurement_theta_min      2.78
_cell_volume                     1812.02(11)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0546
_diffrn_reflns_av_sigmaI/netI    0.0634
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            9043
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    3.225
_exptl_absorpt_correction_T_max  0.7870
_exptl_absorpt_correction_T_min  0.5439
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.906
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.078
_refine_diff_density_min         -0.997
_refine_diff_density_rms         0.133
_refine_ls_extinction_coef       0.0046(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3510
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0400
_refine_ls_R_factor_gt           0.0354
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0411P)^2^+0.3837P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0880
_refine_ls_wR_factor_ref         0.0912
_reflns_number_gt                3094
_reflns_number_total             3510
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c9dt01100e2.cif
_cod_data_source_block           sb
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7701739