Probing the 5f Orbital Contribution to the Bonding in a U(V) Ketimide Complex
Lani A. Seaman; Guang Wu; Norman Edelstein; Wayne W. Lukens; Nicola Magnani; Trevor W. Hayton; Journal of the American Chemical Society 134 (2012) 4931–4940; doi:10.1021/ja211875s

data_4117668
_publ_section_title
;
 Probing the 5f Orbital Contribution to the Bonding in a U(V) Ketimide
 Complex
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4931
_journal_page_last               4940
_journal_paper_doi               10.1021/ja211875s
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C63 H86 Li N5 O2 U'
_chemical_formula_weight         1190.34
_chemical_name_systematic
; 
 U(IV) Ph Ket 
;
_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                76.405(5)
_cell_angle_beta                 77.740(5)
_cell_angle_gamma                65.596(4)
_cell_formula_units_Z            2
_cell_length_a                   13.2886(13)
_cell_length_b                   13.9258(14)
_cell_length_c                   18.2372(17)
_cell_measurement_temperature    100(2)
_cell_volume                     2961.8(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'CCD area detector'
_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  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0389
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            28902
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    2.785
_exptl_absorpt_correction_T_max  0.6801
_exptl_absorpt_correction_T_min  0.4888
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_description       block
_exptl_crystal_F_000             1220
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         5.918
_refine_diff_density_min         -3.774
_refine_diff_density_rms         0.130
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.116
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     658
_refine_ls_number_reflns         14614
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.116
_refine_ls_R_factor_all          0.0511
_refine_ls_R_factor_gt           0.0452
_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^)+(0.0257P)^2^+14.8359P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1081
_refine_ls_wR_factor_ref         0.1118
_reflns_number_gt                13334
_reflns_number_total             14614
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja211875s_si_002_1.cif
_cod_data_source_block           complex1
_cod_database_code               4117668