Uranium(III)/(IV) Nitrile Adducts Including UI4(N\τbCPh)4, a Synthetically Useful Uranium(IV) Complex
Alejandro E. Enriquez; Brian L. Scott; Mary P. Neu; Inorganic Chemistry 44 (2005) 7403–7413; doi:10.1021/ic050578f

data_4309735
_publ_contact_author
;
     Mary P. Neu
     MS J514
     Los Alamos National Laboratory
     Los Alamos, NM 87545
;
_publ_contact_author_email       mneu@lanl.gov
_publ_contact_author_fax         '505 667 9905'
_publ_contact_author_phone       '505 667 7717'
_publ_section_title
;
Uranium(III)/(IV) Nitrile Adducts Including UI4(N\\tbCPh)4, a Synthetically
Useful Uranium(IV) Complex
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7403
_journal_page_last               7413
_journal_paper_doi               10.1021/ic050578f
_journal_volume                  44
_journal_year                    2005
_chemical_formula_sum            'C56 H40 I7 N8 U'
_chemical_formula_weight         1951.29
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           83
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4'
_symmetry_space_group_name_H-M   'P 4/m'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            1
_cell_length_a                   12.221(3)
_cell_length_b                   12.221(3)
_cell_length_c                   10.806(4)
_cell_measurement_temperature    203(2)
_cell_volume                     1613.9(8)
_computing_cell_refinement       'Bruker SAINT (v. 5.00, Bruker 1998)'
_computing_data_collection       'Siemens SMART (v. 4.202, Siemens 1996)'
_computing_data_reduction        'Bruker SAINT (v. 5.00, Bruker 1998)'
_computing_molecular_graphics    'Bruker AXS SHEXTL (v. 5.10)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4 with SMART 1k CCD'
_diffrn_measurement_method       '\w and \f scan'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.1023
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            8359
_diffrn_reflns_theta_full        22.41
_diffrn_reflns_theta_max         22.41
_diffrn_reflns_theta_min         1.67
_diffrn_standards_decay_%        '< 2'
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_exptl_absorpt_coefficient_mu    5.901
_exptl_absorpt_correction_T_max  0.8911
_exptl_absorpt_correction_T_min  0.6496
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    2.008
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             895
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         2.772
_refine_diff_density_min         -1.657
_refine_diff_density_rms         0.294
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.487
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     66
_refine_ls_number_reflns         8359
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.487
_refine_ls_R_factor_all          0.1195
_refine_ls_R_factor_gt           0.0811
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0421P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1642
_refine_ls_wR_factor_ref         0.1714
_reflns_number_gt                5738
_reflns_number_total             8359
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic050578fsi20050414_065309_4.cif
_cod_data_source_block           ccd722
_cod_original_cell_volume        1613.8(9)
_cod_database_code               4309735