Synthesis of terminal monochalcogenide and dichalcogenide complexes of uranium using polychalcogenides, [en](2-) (e = te, N = 2; e = se, N = 4), as chalcogen atom transfer reagents.
Smiles, Danil E.; Wu, Guang; Hayton, Trevor W.; Inorganic chemistry 53 (2014) 10240–10247; doi:10.1021/ic501267f

data_4341492
_publ_section_title
;
 Synthesis of terminal monochalcogenide and dichalcogenide complexes of
 uranium using polychalcogenides, [en](2-) (e = te, N = 2; e = se, N = 4),
 as chalcogen atom transfer reagents.
;
_journal_issue                   19
_journal_name_full               'Inorganic chemistry'
_journal_page_first              10240
_journal_page_last               10247
_journal_paper_doi               10.1021/ic501267f
_journal_volume                  53
_journal_year                    2014
_chemical_formula_sum            'C30 H78 K N3 O6 Se2 Si6 U'
_chemical_formula_weight         1180.54
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 105.602(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.2894(6)
_cell_length_b                   17.7878(8)
_cell_length_c                   22.4872(8)
_cell_measurement_temperature    100(2)
_cell_volume                     5119.9(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker Kappa Apex II'
_diffrn_measurement_method       'Omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0319
_diffrn_reflns_av_sigmaI/netI    0.0681
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            25138
_diffrn_reflns_theta_full        27.10
_diffrn_reflns_theta_max         27.10
_diffrn_reflns_theta_min         2.82
_exptl_absorpt_coefficient_mu    4.850
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.4494
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            red-orange
_exptl_crystal_density_diffrn    1.532
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2360
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         2.654
_refine_diff_density_min         -1.635
_refine_diff_density_rms         0.134
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.461(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     920
_refine_ls_number_reflns         20231
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0500
_refine_ls_R_factor_gt           0.0408
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0480P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0916
_refine_ls_wR_factor_ref         0.0961
_reflns_number_gt                17937
_reflns_number_total             20231
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic501267f_si_002.cif
_cod_data_source_block           complex5
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               4341492