Direct enantioseparation of axially chiral 1,1′-biaryl-2,2′-diols using amidine-based resolving agents
Kodama, Koichi; Takase, Fusato; Hirose, Takuji; RSC Advances 11 (2021) 18162–18170; doi:10.1039/D1RA03546K

data_7242886
_publ_section_title
;
 Direct enantioseparation of axially chiral
 1,1&#x2032;-biaryl-2,2&#x2032;-diols using amidine-based resolving agents
;
_journal_issue                   30
_journal_name_full               'RSC Advances'
_journal_page_first              18162
_journal_page_last               18170
_journal_paper_doi               10.1039/D1RA03546K
_journal_volume                  11
_journal_year                    2021
_chemical_absolute_configuration rm
_chemical_formula_sum            'C63 H52 N2 O4'
_chemical_formula_weight         901.06
_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   mixed
_audit_creation_method           SHELXL-2018/1
_audit_update_record
;
2021-01-20 deposited with the CCDC.	2021-05-13 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.0606(15)
_cell_length_b                   20.736(3)
_cell_length_c                   22.810(3)
_cell_measurement_reflns_used    3333
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      21.68
_cell_measurement_theta_min      2.25
_cell_volume                     4758.5(12)
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0902
_diffrn_reflns_av_unetI/netI     0.1168
_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       -7
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            22966
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        24.997
_diffrn_reflns_theta_max         24.997
_diffrn_reflns_theta_min         1.327
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.997
_exptl_absorpt_correction_T_min  0.892
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.258
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1904
_exptl_crystal_size_max          0.130
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.158
_refine_diff_density_min         -0.178
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details
;
 Flack x determined using 1722 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.3(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.794
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     644
_refine_ls_number_reflns         8364
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.794
_refine_ls_R_factor_all          0.0797
_refine_ls_R_factor_gt           0.0419
_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^)+(0.0219P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0754
_refine_ls_wR_factor_ref         0.0858
_reflns_Friedel_coverage         0.788
_reflns_Friedel_fraction_full    0.994
_reflns_Friedel_fraction_max     0.994
_reflns_number_gt                5316
_reflns_number_total             8364
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ra03546k2.cif
_cod_data_source_block           2a_2(S)-1a
_cod_original_cell_volume        4758.6(12)
_cod_database_code               7242886
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_min   0.990
_shelx_estimated_absorpt_t_max   0.997
_shelx_res_checksum              49226