Polysubstituted guanidine-based receptors for the selective extraction of pertechnetate anions from high-level waste.
Leksina, Uliana M.; Abramov, Vladimir A.; Matveev, Petr I.; Lemport, Pavel S.; Gopin, Alexander V.; Glushkov, Egor D.; Lyssenko, Konstantin A.; Trigub, Alexander L.; Petrov, Vladimir G.; Ustynyuk, Yuri A.; Nenajdenko, Valentine G.; Dalton transactions (Cambridge, England : 2003) 55 (2026) 4457–4471; doi:10.1039/d6dt00057f

data_7720020
_publ_section_title
;
 Polysubstituted guanidine-based receptors for the selective extraction of
 pertechnetate anions from high-level waste.
;
_journal_issue                   11
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4457
_journal_page_last               4471
_journal_paper_doi               10.1039/d6dt00057f
_journal_volume                  55
_journal_year                    2026
_chemical_formula_moiety         '(Cl O4), (C19 H26 N3)'
_chemical_formula_sum            'C19 H26 Cl N3 O4'
_chemical_formula_weight         395.88
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2025-03-13 deposited with the CCDC.	2026-02-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.200(5)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   8.0266(15)
_cell_length_b                   28.876(5)
_cell_length_c                   17.378(3)
_cell_measurement_reflns_used    1951
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      22.26
_cell_measurement_theta_min      2.42
_cell_volume                     4021.5(12)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_collection       'APEX3 (Bruker, 2019)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker D8 Quest with Photon III detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1663
_diffrn_reflns_av_unetI/netI     0.1647
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            30456
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.000
_diffrn_reflns_theta_min         1.835
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.219
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1451 before and 0.0652 after correction.
The Ratio of minimum to maximum transmission is 0.7872.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_description       block
_exptl_crystal_F_000             1680
_exptl_crystal_size_max          0.170
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.130
_exptl_transmission_factor_max   0.972
_exptl_transmission_factor_min   0.964
_refine_diff_density_max         0.320
_refine_diff_density_min         -0.411
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     488
_refine_ls_number_reflns         8772
_refine_ls_number_restraints     15
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.1499
_refine_ls_R_factor_gt           0.0717
_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^)+(0.0512P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1492
_refine_ls_wR_factor_ref         0.1792
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4758
_reflns_number_total             8772
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d6dt00057f2.cif
_cod_data_source_block           lum
_cod_depositor_comments
'Adding full bibliography for 7720018--7720021.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7720020
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.964
_shelx_estimated_absorpt_t_max   0.972
_shelx_res_checksum              3302