Chirality Switching in Optical Resolution of Mandelic Acid in C1‒C4 Alcohols: Elucidation of Solvent Effects Based on X-ray Crystal Structures of Diastereomeric Salts
Kodama, Koichi; Shitara, Hiroaki; Hirose, Takuji; Crystal Growth & Design 14 (2014) 3549–; doi:10.1021/cg500483p

data_4511375
_publ_section_title
;
 Chirality Switching in Optical Resolution of Mandelic Acid in C1--C4
 Alcohols: Elucidation of Solvent Effects Based on X-ray Crystal
 Structures of Diastereomeric Salts
;
_journal_issue                   7
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3549
_journal_paper_doi               10.1021/cg500483p
_journal_volume                  14
_journal_year                    2014
_chemical_absolute_configuration syn
_chemical_formula_sum            'C26 H33 N O5'
_chemical_formula_weight         439.53
_chemical_name_systematic
;
 ?
;
_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'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.5978(14)
_cell_length_b                   17.721(4)
_cell_length_c                   24.372(6)
_cell_measurement_temperature    200(2)
_cell_volume                     2417.7(10)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1825
_diffrn_reflns_av_unetI/netI     0.2345
_diffrn_reflns_Laue_measured_fraction_full 0.972
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            11589
_diffrn_reflns_point_group_measured_fraction_full 0.971
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         24.996
_diffrn_reflns_theta_min         1.421
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.998
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.208
_exptl_crystal_description       needle
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.780
_exptl_crystal_size_mid          0.020
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.194
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details
;
 Flack x determined using 492 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   0.2(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.736
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     294
_refine_ls_number_reflns         4257
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.736
_refine_ls_R_factor_all          0.1546
_refine_ls_R_factor_gt           0.0570
_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^)+(0.0368P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1128
_refine_ls_wR_factor_ref         0.1388
_reflns_Friedel_coverage         0.713
_reflns_Friedel_fraction_full    0.969
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                1756
_reflns_number_total             4257
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            (R)-MA_(1R2S)-ADPE_iBuOH.cif
_cod_data_source_block           (R)-MA_(1R,2S)-ADPE_iBuOH
_cod_depositor_comments
'Adding full bibliography for 4511364--4511381.cif.'
_cod_database_code               4511375
_shelx_estimated_absorpt_t_min   0.938
_shelx_estimated_absorpt_t_max   0.998
_shelxl_version_number           2013-4
_shelx_res_checksum              93554
_shelx_hkl_checksum              30057