Actinide complexes with Wells-Dawson polyoxometalates (part 1): americium and curium.
Colliard, Ian; Deblonde, Gauthier J.-P.; Chemical communications (Cambridge, England) 62 (2026) 4018–4022; doi:10.1039/d5cc06999h

data_7135384
_publ_section_title
;
 Actinide complexes with Wells-Dawson polyoxometalates (part 1): americium
 and curium.
;
_journal_issue                   13
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4018
_journal_page_last               4022
_journal_paper_doi               10.1039/d5cc06999h
_journal_volume                  62
_journal_year                    2026
_chemical_absolute_configuration rm
_chemical_formula_sum            'C18 H22 N2 O3 S'
_chemical_formula_weight         346.43
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2025-11-30 deposited with the CCDC.	2026-01-14 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.7877(6)
_cell_length_b                   8.8493(5)
_cell_length_c                   23.3060(14)
_cell_measurement_reflns_used    9933
_cell_measurement_temperature    301(2)
_cell_measurement_theta_max      27.57
_cell_measurement_theta_min      2.89
_cell_volume                     1812.39(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-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      301(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0507
_diffrn_reflns_av_unetI/netI     0.0210
_diffrn_reflns_Laue_measured_fraction_full 0.963
_diffrn_reflns_Laue_measured_fraction_max 0.963
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            36711
_diffrn_reflns_point_group_measured_fraction_full 0.964
_diffrn_reflns_point_group_measured_fraction_max 0.964
_diffrn_reflns_theta_full        24.999
_diffrn_reflns_theta_max         24.999
_diffrn_reflns_theta_min         2.903
_exptl_absorpt_coefficient_mu    0.196
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6898
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick,1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.270
_exptl_crystal_description       block
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.286
_exptl_crystal_size_mid          0.142
_exptl_crystal_size_min          0.115
_refine_diff_density_max         0.374
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
; 
 Flack x determined using 1161 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   0.05(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3101
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0511
_refine_ls_R_factor_gt           0.0481
_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^)+(0.0506P)^2^+1.3392P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1186
_refine_ls_wR_factor_ref         0.1200
_reflns_Friedel_coverage         0.723
_reflns_Friedel_fraction_full    0.965
_reflns_Friedel_fraction_max     0.965
_reflns_number_gt                2964
_reflns_number_total             3101
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc06999h2.cif
_cod_data_source_block           1
_cod_database_code               7135384
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.946
_shelx_estimated_absorpt_t_max   0.978
_shelx_res_checksum              45456
_shelx_hkl_checksum              12584