Single-crystal-to-single-crystal phase transition of 18β-glycyrrhetinic acid isopropyl ester
Langer, Dominik; Wicher, Barbara; Tykarska, Ewa; Acta Crystallographica Section B 78 (2022) –; doi:10.1107/S2052520622002517

data_2108965
_publ_section_title
;
 Single-crystal-to-single-crystal phase transition of 18\b-glycyrrhetinic
 acid isopropyl ester
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520622002517
_journal_volume                  78
_journal_year                    2022
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C32 H50 O4'
_chemical_formula_sum            'C32 H50 O4'
_chemical_formula_weight         498.72
_chemical_melting_point          496.0(10)
_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
_audit_creation_date             2021-12-01
_audit_creation_method
;
Olex2 1.5
(compiled 2021.11.18 svn.ra9532c28 for OlexSys, GUI svn.r6429)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.02432(14)
_cell_length_b                   12.99238(13)
_cell_length_c                   16.69407(19)
_cell_measurement_reflns_used    15860
_cell_measurement_temperature    298.15
_cell_measurement_theta_max      76.42
_cell_measurement_theta_min      2.59
_cell_volume                     2824.92(5)
_computing_cell_refinement       'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_data_collection       'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_data_reduction        'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      298.15
_diffrn_detector_area_resol_mean 10.3991
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0327
_diffrn_reflns_av_unetI/netI     0.0201
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            27501
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         68.246
_diffrn_reflns_theta_min         6.799
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.584
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.880
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.93a (Rigaku Oxford Diffraction, 2020)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_description       plate
_exptl_crystal_F_000             1096
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.261
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 2119 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.05(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     335
_refine_ls_number_reflns         5167
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0411
_refine_ls_R_factor_gt           0.0394
_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^)+(0.0620P)^2^+0.5570P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1038
_refine_ls_wR_factor_ref         0.1060
_reflns_Friedel_coverage         0.774
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                4966
_reflns_number_total             5167
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            rm5058sup1.cif
_cod_data_source_block           18b_et
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_melting_point' value '495-497' was changed to
'496.0(10)' -- the average value was taken and precision was
estimated.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               2108965
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.917
_shelx_estimated_absorpt_t_min   0.721
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All C(H,H,H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2. Restrained distances
 C32-C31 = C32A-C31
 1.54 with sigma of 0.002
3. Others
 Sof(H31C)=Sof(H31D)=Sof(C32A)=Sof(H32D)=Sof(H32E)=Sof(H32F)=1-FVAR(1)
 Sof(H31A)=Sof(H31B)=Sof(C32)=Sof(H32A)=Sof(H32B)=Sof(H32C)=FVAR(1)
4.a Ternary CH refined with riding coordinates:
 C3(H3A), C5(H5), C9(H9), C18(H18)
4.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C6(H6A,H6B), C7(H7A,H7B), C15(H15A,H15B), C16(H16A,
 H16B), C19(H19A,H19B), C21(H21A,H21B), C22(H22A,H22B), C31(H31A,H31B),
 C31(H31C,H31D)
4.c Aromatic/amide H refined with riding coordinates:
 C12(H12)
4.d Idealised Me refined as rotating group:
 C23(H23A,H23B,H23C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C), C26(H26A,H26B,
 H26C), C27(H27A,H27B,H27C), C28(H28A,H28B,H28C), C29(H29A,H29B,H29C), C32(H32A,
 H32B,H32C), C32A(H32D,H32E,H32F)
4.e Idealised tetrahedral OH refined as rotating group:
 O3(H3)
;
_shelx_res_checksum              82816
_shelx_hkl_checksum              80506
_olex2_submission_special_instructions 'No special instructions were received'
_cod_database_fobs_code 2108965