Uranium(IV) Nucleophilic Carbene Complexes
Tourneux, Jean-Christophe; Berthet, Jean-Claude; Cantat, Thibault; Thuéry, Pierre; Mézailles, Nicolas; Le Floch, Pascal; Ephritikhine, Michel; Organometallics 30 (2011) 2957–; doi:10.1021/om200006g

data_4064272
_publ_section_title
;
 Uranium(IV) Nucleophilic Carbene Complexes
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2957
_journal_paper_doi               10.1021/om200006g
_journal_volume                  30
_journal_year                    2011
_chemical_formula_sum            'C74 H92 Li2 N2 O6 P4 S4 U2'
_chemical_formula_weight         1847.56
_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                72.795(5)
_cell_angle_beta                 87.145(4)
_cell_angle_gamma                63.896(5)
_cell_formula_units_Z            1
_cell_length_a                   11.8930(13)
_cell_length_b                   13.3571(10)
_cell_length_c                   13.8449(12)
_cell_measurement_reflns_used    82532
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.68
_cell_measurement_theta_min      2.35
_cell_volume                     1878.3(3)
_computing_cell_refinement       'HKL2000 (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction        'HKL2000 (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1999)'
_computing_publication_material
'SHELXTL (Sheldrick, 1999); PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
'Nonius Kappa-CCD area-detector diffractometer'
_diffrn_measurement_method
'two \f and eight \w scans with 2\% steps (611 frames)'
_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  0.0744
_diffrn_reflns_av_sigmaI/netI    0.0853
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            82532
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         2.35
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.553
_exptl_absorpt_correction_T_max  0.695
_exptl_absorpt_correction_T_min  0.433
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            'translucent dark red'
_exptl_crystal_density_diffrn    1.633
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.904
_refine_diff_density_min         -1.141
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.968
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     436
_refine_ls_number_reflns         7122
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      0.971
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0332
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0134P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0613
_refine_ls_wR_factor_ref         0.0652
_reflns_number_gt                5803
_reflns_number_total             7122
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om200006g_si_003.cif
_cod_data_source_block           8
_cod_database_code               4064272