Preparation and reactivity of the versatile uranium(IV) imido complexes U(NAr)Cl₂(R₂bpy)₂ (R = Me, (t)Bu) and U(NAr)Cl₂(tppo)₃.
Jilek, Robert E.; Tomson, Neil C.; Shook, Ryan L.; Scott, Brian L.; Boncella, James M.; Inorganic chemistry 53 (2014) 9818–9826; doi:10.1021/ic5014208

data_4340979
_publ_section_title
;
 Preparation and reactivity of the versatile uranium(IV) imido complexes
 U(NAr)Cl&#x2082;(R&#x2082;bpy)&#x2082; (R = Me, (t)Bu) and
 U(NAr)Cl&#x2082;(tppo)&#x2083;.
;
_journal_issue                   18
_journal_name_full               'Inorganic chemistry'
_journal_page_first              9818
_journal_page_last               9826
_journal_paper_doi               10.1021/ic5014208
_journal_volume                  53
_journal_year                    2014
_chemical_formula_sum            'C40 H56 Cl4 N4 O U'
_chemical_formula_weight         988.72
_chemical_name_systematic
; 
 ? 
;
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_atom_sites_solution_secondary   difmap
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_cell_angle_alpha                90.00
_cell_angle_beta                 94.701(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.5422(11)
_cell_length_b                   11.5540(8)
_cell_length_c                   25.5297(18)
_cell_measurement_temperature    120(1)
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_computing_cell_refinement       'SAINT+, v. 7.66a (Bruker AXS, 2009)'
_computing_data_collection       'APEX II, v. 7.0 (Bruker AXS, 2009)'
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_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(1)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_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
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_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.70
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_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
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_exptl_absorpt_coefficient_mu    3.588
_exptl_absorpt_correction_T_max  0.7155
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_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v. 2.03 (Sheldrick, 2008)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.350
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
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_exptl_crystal_size_max          0.20
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_platon_squeeze_details
;
;
_refine_diff_density_max         1.028
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_refine_ls_number_reflns         9233
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_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0472
_refine_ls_R_factor_gt           0.0319
_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^)+(0.0371P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_threshold_expression     >2sigma(I)
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_cod_depositor_comments
'Adding full bibliography for 4340979--4340989.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4340979