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_4038675
_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         'C40 H44 N2'
_chemical_formula_sum            'C40 H44 N2'
_chemical_formula_weight         552.77
_space_group_crystal_system      tetragonal
_space_group_IT_number           77
_space_group_name_Hall           'P 4c'
_space_group_name_H-M_alt        'P 42'
_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                   20.4806(8)
_cell_length_b                   20.4806(8)
_cell_length_c                   7.7702(3)
_cell_measurement_reflns_used    2825
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      73.1990
_cell_measurement_theta_min      3.0410
_cell_volume                     3259.2(2)
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'SuperNova, Single source at offset/far, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0958
_diffrn_reflns_av_unetI/netI     0.0936
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            17127
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        66.508
_diffrn_reflns_theta_max         66.508
_diffrn_reflns_theta_min         2.157
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.487
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.44995
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.57a (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.127
_exptl_crystal_description       needle
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.350
_exptl_crystal_size_mid          0.010
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.602
_refine_diff_density_min         -0.262
_refine_diff_density_rms         0.087
_refine_ls_abs_structure_details
;
 Flack x determined using 1127 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.1(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     387
_refine_ls_number_reflns         5769
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.1319
_refine_ls_R_factor_gt           0.1014
_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^)+(0.1926P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2557
_refine_ls_wR_factor_ref         0.3035
_reflns_Friedel_coverage         0.850
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                3879
_reflns_number_total             5769
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c00734_si_003.cif
_cod_data_source_block           4a
_cod_original_cell_volume        3259.2(3)
_cod_database_code               4038675
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.848
_shelx_estimated_absorpt_t_max   0.995
_shelx_res_checksum              7036