TADDOLs and methylcyclohexanones: selectivity, resolution and the kinetics of decomposition
Bawa, Hana; Su, Hong; De Doncker, Stephen; Bourne, Susan A.; Nassimbeni, Luigi R.; CrystEngComm 28 (2026) 1690–1698; doi:10.1039/D5CE01022E

data_7251561
_publ_section_title
;
 TADDOLs and methylcyclohexanones: selectivity, resolution and the
 kinetics of decomposition
;
_journal_issue                   10
_journal_name_full               CrystEngComm
_journal_page_first              1690
_journal_page_last               1698
_journal_paper_doi               10.1039/D5CE01022E
_journal_volume                  28
_journal_year                    2026
_chemical_absolute_configuration syn
_chemical_formula_sum            'C38 H42 O5'
_chemical_formula_weight         578.71
_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
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2025-10-07 deposited with the CCDC.	2026-02-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.324(2)
_cell_length_b                   12.457(2)
_cell_length_c                   26.951(7)
_cell_measurement_reflns_used    9849
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.315
_cell_measurement_theta_min      2.311
_cell_volume                     3130.3(12)
_computing_cell_refinement
'SAINT (7.60a, Bruker AXS Inc., Madison, WI, USA, 2006)'
_computing_data_collection
'SAINT (7.60a, Bruker AXS Inc., Madison, WI, USA, 2006)'
_computing_data_reduction
'SAINT (7.60a, Bruker AXS Inc., Madison, WI, USA, 2006)'
_computing_molecular_graphics    'X-Seed (Barbour, 2001'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 Venture Diffractometer'
_diffrn_measurement_method       '1\% \f scans and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0724
_diffrn_reflns_av_unetI/netI     0.0475
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            47934
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.361
_diffrn_reflns_theta_min         2.311
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  0.6371
_exptl_absorpt_correction_T_min  0.5812
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2001)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_description       block
_exptl_crystal_F_000             1240
_exptl_crystal_size_max          0.570
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.080
_exptl_transmission_factor_max   1.000
_exptl_transmission_factor_min   0.912
_refine_diff_density_max         0.190
_refine_diff_density_min         -0.191
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Flack x determined using 2769 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.5(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     399
_refine_ls_number_reflns         7790
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0486
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0406P)^2^+0.5428P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0889
_refine_ls_wR_factor_ref         0.0940
_reflns_Friedel_coverage         0.785
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.995
_reflns_number_gt                6885
_reflns_number_total             7790
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ce01022e2.cif
_cod_data_source_block           III
_cod_depositor_comments
'Adding full bibliography for 7251558--7251565.cif.'
_cod_database_code               7251561
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.956
_shelx_estimated_absorpt_t_max   0.994
_shelx_res_checksum              87047