Union is strength: π–π stacking interactions are capable of preventing solid-state racemization of tris-chelate complexes
Gavrikov, Andrey V.; Ilyukhin, Andrey B.; CrystEngComm 26 (2024) 1677–1682; doi:10.1039/D4CE00104D

data_7248170
_publ_section_title
;
 Union is strength: \p--\p stacking interactions are capable of preventing
 solid-state racemization of tris-chelate complexes
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              1677
_journal_page_last               1682
_journal_paper_doi               10.1039/D4CE00104D
_journal_volume                  26
_journal_year                    2024
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C36 H24 Co N6, C12 H8 N7 O15 Sm'
_chemical_formula_sum            'C48 H32 Co N13 O15 Sm'
_chemical_formula_weight         1240.14
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
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_audit_conform_dict_name         cif_core.dic
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;
2023-12-11 deposited with the CCDC.	2024-02-14 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6065(14)
_cell_length_b                   17.9940(17)
_cell_length_c                   22.460(2)
_cell_measurement_reflns_used    6888
_cell_measurement_temperature    380(2)
_cell_measurement_theta_max      28.25
_cell_measurement_theta_min      2.26
_cell_volume                     5094.9(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX3'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS-2018 (Sheldrick, 2015)'
_diffrn_ambient_temperature      380(2)
_diffrn_measured_fraction_theta_full 0.98
_diffrn_measured_fraction_theta_max 0.865
_diffrn_measurement_device_type  'Bruker APEX-3 CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0444
_diffrn_reflns_av_unetI/netI     0.0797
_diffrn_reflns_Laue_measured_fraction_full 0.98
_diffrn_reflns_Laue_measured_fraction_max 0.865
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            14750
_diffrn_reflns_point_group_measured_fraction_max 0.75
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.363
_diffrn_reflns_theta_min         2.138
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.549
_exptl_absorpt_correction_T_max  0.492
_exptl_absorpt_correction_T_min  0.3529
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.617
_exptl_crystal_description       plate
_exptl_crystal_F_000             2480
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.1
_refine_diff_density_max         1.184
_refine_diff_density_min         -1.327
_refine_diff_density_rms         0.12
_refine_ls_abs_structure_details
;
 Flack x determined using 1960 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.060(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.11
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     703
_refine_ls_number_reflns         9551
_refine_ls_number_restraints     467
_refine_ls_restrained_S_all      1.11
_refine_ls_R_factor_all          0.1164
_refine_ls_R_factor_gt           0.0823
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
w=1/[\s^2^(Fo^2^)+(0.0900P)^2^+20.0000P] where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2057
_refine_ls_wR_factor_ref         0.2288
_reflns_Friedel_coverage         0.579
_reflns_Friedel_fraction_full    0.772
_reflns_Friedel_fraction_max     0.61
_reflns_number_gt                6740
_reflns_number_total             9551
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ce00104d2.cif
_cod_data_source_block           CoSmPhen_380K
_cod_depositor_comments
'Adding full bibliography for 7248144--7248174.cif.'
_cod_database_code               7248170
_shelx_estimated_absorpt_t_min   0.671
_shelx_estimated_absorpt_t_max   0.861
_shelx_res_checksum              62471