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_7248153
_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, Dy N5 O15, 3(C2 H3 N)'
_chemical_formula_sum            'C42 H33 Co Dy N14 O15'
_chemical_formula_weight         1195.25
_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             2015-02-13T11:26:11-00:00
_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                   12.6343(3)
_cell_length_b                   17.4984(4)
_cell_length_c                   21.6439(5)
_cell_measurement_reflns_used    9775
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.64
_cell_measurement_theta_min      2.2
_cell_volume                     4785.03(19)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-2014 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.97
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0409
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.97
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            68854
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 0.946
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.508
_diffrn_reflns_theta_min         2.2
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.979
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.4864
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.659
_exptl_crystal_description       block
_exptl_crystal_F_000             2384
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.793
_refine_diff_density_min         -0.515
_refine_diff_density_rms         0.083
_refine_ls_abs_structure_details
;
 Flack x determined using 5669 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.004(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.993
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     652
_refine_ls_number_reflns         15064
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      0.995
_refine_ls_R_factor_all          0.0344
_refine_ls_R_factor_gt           0.0287
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0400P)^2^+0.5000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0664
_refine_ls_wR_factor_ref         0.0688
_reflns_number_gt                13743
_reflns_number_total             15064
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ce00104d2.cif
_cod_data_source_block           CoDy_3MeCN_173K
_cod_depositor_comments
'Adding full bibliography for 7248144--7248174.cif.'
_cod_database_code               7248153