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_7248161
_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 La N7 O15, 3(C2 H3 N)'
_chemical_formula_sum            'C54 H41 Co La N16 O15'
_chemical_formula_weight         1351.87
_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
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2022-03-10T10:29:05-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2023-09-15 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                   12.5205(4)
_cell_length_b                   20.2855(5)
_cell_length_c                   22.2201(6)
_cell_measurement_reflns_used    9440
_cell_measurement_temperature    250(2)
_cell_measurement_theta_max      27.06
_cell_measurement_theta_min      2.21
_cell_volume                     5643.6(3)
_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      250(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker AXS D8 VENTURE PHOTON III C14 IuS 3.0'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0399
_diffrn_reflns_av_unetI/netI     0.037
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            52511
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.114
_diffrn_reflns_theta_min         2.09
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.124
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6817
_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    1.591
_exptl_crystal_description       block
_exptl_crystal_F_000             2724
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.268
_refine_diff_density_min         -0.324
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details
;
 Flack x determined using 4605 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.025(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     787
_refine_ls_number_reflns         12440
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1
_refine_ls_R_factor_all          0.0346
_refine_ls_R_factor_gt           0.0281
_refine_ls_shift/su_max          0.022
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0200P)^2^+1.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0503
_refine_ls_wR_factor_ref         0.0527
_reflns_Friedel_coverage         0.82
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                11268
_reflns_number_total             12440
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ce00104d2.cif
_cod_data_source_block           CoLaPhen_3MeCN_250K
_cod_depositor_comments
'Adding full bibliography for 7248144--7248174.cif.'
_cod_database_code               7248161
_shelx_estimated_absorpt_t_min   0.744
_shelx_estimated_absorpt_t_max   0.806
_shelx_res_checksum              14629