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_4511376
_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            'C25 H31 N O5'
_chemical_formula_weight         425.51
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 109.786(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.037(3)
_cell_length_b                   5.7396(11)
_cell_length_c                   16.663(3)
_cell_measurement_temperature    200(2)
_cell_volume                     1173.2(4)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1418
_diffrn_reflns_av_unetI/netI     0.1247
_diffrn_reflns_Laue_measured_fraction_full 0.976
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5660
_diffrn_reflns_point_group_measured_fraction_full 0.912
_diffrn_reflns_point_group_measured_fraction_max 0.931
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         24.987
_diffrn_reflns_theta_min         1.299
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.998
_exptl_absorpt_correction_T_min  0.876
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.205
_exptl_crystal_description       needle
_exptl_crystal_F_000             456
_exptl_crystal_size_max          1.320
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.326
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details
;
 Flack x determined using 908 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   -1.8(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.956
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     285
_refine_ls_number_reflns         3842
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.955
_refine_ls_R_factor_all          0.0938
_refine_ls_R_factor_gt           0.0751
_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^)+(0.1122P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1827
_refine_ls_wR_factor_ref         0.1953
_reflns_Friedel_coverage         0.684
_reflns_Friedel_fraction_full    0.832
_reflns_Friedel_fraction_max     0.850
_reflns_number_gt                2763
_reflns_number_total             3842
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            (R)-MA_(1R2S)-ADPE_iPrOH.cif
_cod_data_source_block           (R)-MA_(1R,2S)-ADPE_iPrOH
_cod_depositor_comments
'Adding full bibliography for 4511364--4511381.cif.'
_cod_database_code               4511376
_shelx_estimated_absorpt_t_min   0.898
_shelx_estimated_absorpt_t_max   0.998
_shelxl_version_number           2013-4
_shelx_res_checksum              95880
_shelx_hkl_checksum              84962