An octadentate bis(semicarbazone) macrocycle: a potential chelator for lead and bismuth radiopharmaceuticals.
Lange, Jaclyn L.; Davey, Patrick R. W. J.; Ma, Michelle T.; White, Jonathan M.; Morgenstern, Alfred; Bruchertseifer, Frank; Blower, Philip J.; Paterson, Brett M.; Dalton transactions (Cambridge, England : 2003) 49 (2020) 14962–14974; doi:10.1039/d0dt02673e

data_7705737
_publ_section_title
;
 An octadentate bis(semicarbazone) macrocycle: a potential chelator for
 lead and bismuth radiopharmaceuticals.
;
_journal_issue                   42
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              14962
_journal_page_last               14974
_journal_paper_doi               10.1039/d0dt02673e
_journal_volume                  49
_journal_year                    2020
_chemical_formula_sum            'C18 H37 Cl2 N10 O12.5 Pb'
_chemical_formula_weight         871.66
_space_group_crystal_system      triclinic
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2018-05-31 deposited with the CCDC.	2020-10-14 downloaded from the CCDC.
;
_cell_angle_alpha                95.581(2)
_cell_angle_beta                 108.614(2)
_cell_angle_gamma                99.640(2)
_cell_formula_units_Z            4
_cell_length_a                   12.2202(3)
_cell_length_b                   15.0117(3)
_cell_length_c                   18.5855(6)
_cell_measurement_reflns_used    16286
_cell_measurement_temperature    130.01(10)
_cell_measurement_theta_max      37.3480
_cell_measurement_theta_min      3.4040
_cell_volume                     3143.75(15)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    SHELXT
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      130.01(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.2273
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0365
_diffrn_reflns_av_unetI/netI     0.0570
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            21194
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         3.266
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    5.610
_exptl_absorpt_correction_T_max  0.312
_exptl_absorpt_correction_T_min  0.155
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
Numerical absorption correction based on gaussian integration over
			a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.842
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1724
_exptl_crystal_size_max          0.551
_exptl_crystal_size_mid          0.351
_exptl_crystal_size_min          0.322
_refine_diff_density_max         2.047
_refine_diff_density_min         -1.531
_refine_diff_density_rms         0.131
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.049(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1594
_refine_ls_number_reflns         15154
_refine_ls_number_restraints     2323
_refine_ls_restrained_S_all      0.961
_refine_ls_R_factor_all          0.0329
_refine_ls_R_factor_gt           0.0314
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0273P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0707
_refine_ls_wR_factor_ref         0.0717
_reflns_Friedel_coverage         1.000
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                14517
_reflns_number_total             15154
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt02673e2.cif
_cod_data_source_block           shelx_CCDC2
_cod_original_formula_sum        'C18 H37 Cl2 N10 O12.50 Pb'
_cod_database_code               7705737
_shelx_shelxl_version_number     2016/6
_oxdiff_exptl_absorpt_empirical_full_min 0.575
_oxdiff_exptl_absorpt_empirical_full_max 2.096
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              61472