Probing the Reactivity and Electronic Structure of a Uranium(V) Terminal Oxo Complex
Skye Fortier; Nikolas Kaltsoyannis; Guang Wu; Trevor W. Hayton; Journal of the American Chemical Society 133 (2011) 14224–14227; doi:10.1021/ja206083p

data_4106757
_publ_contact_author_email       hayton@chem.ucsb.edu
_publ_contact_author_name        'Trevor W. Hayton'
_publ_section_title
;
 Probing the Reactivity and Electronic Structure of a Uranium(V) Terminal
 Oxo Complex
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14224
_journal_page_last               14227
_journal_paper_doi               10.1021/ja206083p
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C18 H53 N3 O Si6 U'
_chemical_formula_weight         734.20
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 115.9240(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.0985(3)
_cell_length_b                   11.8238(2)
_cell_length_c                   16.7024(3)
_cell_measurement_temperature    100(2)
_cell_volume                     3214.54(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0355
_diffrn_reflns_av_sigmaI/netI    0.0348
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            34289
_diffrn_reflns_theta_full        29.12
_diffrn_reflns_theta_max         29.12
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    5.287
_exptl_absorpt_correction_T_max  0.6199
_exptl_absorpt_correction_T_min  0.4178
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.517
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1464
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.155
_refine_diff_density_min         -0.945
_refine_diff_density_rms         0.106
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     279
_refine_ls_number_reflns         8647
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0227
_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^)+(0.0152P)^2^+2.2263P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0404
_refine_ls_wR_factor_ref         0.0431
_reflns_number_gt                7076
_reflns_number_total             8647
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja206083p_si_001_2.cif
_cod_data_source_block           Complex_2
_cod_database_code               4106757