Oxidative Addition to U(V)-U(V) Dimers: Facile Routes to Uranium(VI) Bis(imido) Complexes
Liam P. Spencer; Ping Yang; Brian L. Scott; Enrique R. Batista; James M. Boncella; Inorganic Chemistry 48 (2009) 11615–11623; doi:10.1021/ic901581r

data_4303847
_publ_section_title
;
Oxidative Addition to U(V)-U(V) Dimers: Facile Routes to Uranium(VI)
Bis(imido) Complexes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              11615
_journal_page_last               11623
_journal_paper_doi               10.1021/ic901581r
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C57 H95 Cl4 I2 N8 U2'
_chemical_formula_weight         1764.07
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                80.377(2)
_cell_angle_beta                 76.684(2)
_cell_angle_gamma                71.538(2)
_cell_formula_units_Z            2
_cell_length_a                   12.891(2)
_cell_length_b                   13.031(2)
_cell_length_c                   20.734(3)
_cell_measurement_temperature    120(1)
_cell_volume                     3198.1(8)
_computing_cell_refinement       'SAINT+, v. 7.06 (Bruker AXS, 2001)'
_computing_data_collection       'APEX II, v. 1.08 (Bruker AXS, 2003)'
_computing_data_reduction        'SAINT+, v. 7.06 (Bruker AXS, 2001)'
_computing_molecular_graphics    'SHELXTL, v. 6.10, (Bruker AXS, 2000)'
_computing_publication_material  'SHELXTL, v. 6.10, (Bruker AXS, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(1)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker D8 with APEXII CCD'
_diffrn_measurement_method       '\w scans'
_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  0.0479
_diffrn_reflns_av_sigmaI/netI    0.0708
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            31413
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.73
_diffrn_reflns_theta_min         2.00
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    6.231
_exptl_absorpt_correction_T_max  0.5746
_exptl_absorpt_correction_T_min  0.3688
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.03 (Sheldrick, 2001)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.832
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1702
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.10
_platon_squeeze_details
;
Two dichloromethane molecules, and one-half hexand per
uranium dimer were treated using PLATON/SQUEEZE; 
Spek, A.L. (2003), J.Appl.Cryst. 36, 7-13.
;
_refine_diff_density_max         1.612
_refine_diff_density_min         -1.364
_refine_diff_density_rms         0.168
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.919
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     601
_refine_ls_number_reflns         12097
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.919
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0376
_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^)+(0.0373P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0745
_refine_ls_wR_factor_ref         0.0809
_reflns_number_gt                8281
_reflns_number_total             12097
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic901581r_si_002_4.cif
_cod_data_source_block           apx567s
_cod_original_cell_volume        3198.1(9)
_cod_database_code               4303847