Rare earth benzene tetraanion-bridged amidinate complexes.
Jin, Peng-Bo; Luo, Qian-Cheng; Gransbury, Gemma K.; Winpenny, Richard E. P.; Mills, David P.; Zheng, Yan-Zhen; Chemical science 16 (2025) 1907–1924; doi:10.1039/d4sc05982d

data_1573553
_publ_section_title
;
 Rare earth benzene tetraanion-bridged amidinate complexes.
;
_journal_issue                   4
_journal_name_full               'Chemical science'
_journal_page_first              1907
_journal_page_last               1924
_journal_paper_doi               10.1039/d4sc05982d
_journal_volume                  16
_journal_year                    2025
_chemical_formula_sum            'C64 H92 N4 Tb2'
_chemical_formula_weight         1235.25
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2024-11-13 deposited with the CCDC.	2024-12-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   30.89030(15)
_cell_length_b                   10.27991(6)
_cell_length_c                   18.11204(9)
_cell_measurement_reflns_used    62437
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      77.3910
_cell_measurement_theta_min      2.8390
_cell_volume                     5751.47(5)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0475
_diffrn_reflns_av_unetI/netI     0.0278
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            97025
_diffrn_reflns_point_group_measured_fraction_full 0.981
_diffrn_reflns_point_group_measured_fraction_max 0.969
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         77.607
_diffrn_reflns_theta_min         2.861
_exptl_absorpt_coefficient_mu    12.234
_exptl_absorpt_correction_T_max  0.101
_exptl_absorpt_correction_T_min  0.087
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.122a (Rigaku Oxford Diffraction, 2021)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.427
_exptl_crystal_description       octahedron
_exptl_crystal_F_000             2536
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         1.219
_refine_diff_density_min         -0.986
_refine_diff_density_rms         0.095
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.425(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     678
_refine_ls_number_reflns         11868
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0346
_refine_ls_R_factor_gt           0.0328
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0476P)^2^+13.0958P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0893
_refine_ls_wR_factor_ref         0.0901
_reflns_Friedel_coverage         0.884
_reflns_Friedel_fraction_full    0.961
_reflns_Friedel_fraction_max     0.940
_reflns_number_gt                11332
_reflns_number_total             11868
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc05982d2.cif
_cod_data_source_block           crepw010_auto
_cod_depositor_comments
'Adding full bibliography for 1573553--1573561.cif.'
_cod_database_code               1573553
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.122
_shelx_estimated_absorpt_t_max   0.187
_shelx_res_checksum              83084