Point-to-Axial Chirality Transmission: A Highly Sensitive Triaryl Chirality Probe for Stereochemical Assignments of Amines
Mądry, Tomasz; Czapik, Agnieszka; Kwit, Marcin; The Journal of Organic Chemistry  (2020) –; doi:10.1021/acs.joc.0c00734

data_4038676
_publ_section_title
;
 Point-to-Axial Chirality Transmission: A Highly Sensitive Triaryl
 Chirality Probe for Stereochemical Assignments of Amines
;
_journal_name_full               'The Journal of Organic Chemistry'
_journal_paper_doi               10.1021/acs.joc.0c00734
_journal_year                    2020
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C38 H40 N2'
_chemical_formula_sum            'C38 H40 N2'
_chemical_formula_weight         524.72
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5927(4)
_cell_length_b                   11.5581(4)
_cell_length_c                   27.4017(9)
_cell_measurement_reflns_used    5644
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      75.5890
_cell_measurement_theta_min      4.1430
_cell_volume                     3038.12(19)
_computing_cell_refinement       'CrysAlisPro 1.171.40.57a (Rigaku OD, 2019)'
_computing_data_collection       'CrysAlisPro 1.171.40.57a (Rigaku OD, 2019)'
_computing_data_reduction        'CrysAlisPro 1.171.40.57a (Rigaku OD, 2019)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      130(2)
_diffrn_detector_area_resol_mean 10.5357
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0577
_diffrn_reflns_av_unetI/netI     0.0575
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            16902
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         70.059
_diffrn_reflns_theta_min         4.885
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.499
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.57195
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.57a (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.147
_exptl_crystal_description       plate
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.160
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.332
_refine_diff_density_min         -0.265
_refine_diff_density_rms         0.056
_refine_ls_abs_structure_details
;
 Flack x determined using 1830 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.5(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     367
_refine_ls_number_reflns         5770
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0744
_refine_ls_R_factor_gt           0.0671
_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^)+(0.1204P)^2^+0.2627P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1843
_refine_ls_wR_factor_ref         0.1916
_reflns_Friedel_coverage         0.763
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                5077
_reflns_number_total             5770
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c00734_si_003.cif
_cod_data_source_block           4b
_cod_database_code               4038676
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.898
_shelx_estimated_absorpt_t_max   0.990
_shelx_res_checksum              6133