Spontaneous reduction and C-H borylation of arenes mediated by uranium(III) disproportionation.
Arnold, Polly L.; Mansell, Stephen M.; Maron, Laurent; McKay, David; Nature chemistry 4 (2012) 668–674; doi:10.1038/nchem.1392

data_1508241
_publ_section_title
;
 Spontaneous reduction and C-H borylation of arenes mediated by
 uranium(III) disproportionation.
;
_journal_issue                   8
_journal_name_full               'Nature chemistry'
_journal_page_first              668
_journal_page_last               674
_journal_paper_doi               10.1038/nchem.1392
_journal_volume                  4
_journal_year                    2012
_chemical_formula_moiety         'C76 H107 B O4 U2'
_chemical_formula_sum            'C76 H107 B O4 U2'
_chemical_formula_weight         1571.49
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
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_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
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_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.8820(1)
_cell_length_b                   10.7190(1)
_cell_length_c                   25.2792(1)
_cell_measurement_reflns_used    40836
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      74.5433
_cell_measurement_theta_min      3.4939
_cell_volume                     6742.22(7)
_computing_cell_refinement
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
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_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10.3147
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0672
_diffrn_reflns_av_sigmaI/netI    0.0433
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       31
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_diffrn_reflns_number            81671
_diffrn_reflns_theta_full        74.71
_diffrn_reflns_theta_max         74.71
_diffrn_reflns_theta_min         3.50
_exptl_absorpt_coefficient_mu    13.774
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.43978
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    1.548
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             3136
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         1.408
_refine_diff_density_min         -1.233
_refine_diff_density_rms         0.105
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.037(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
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_refine_ls_number_reflns         13654
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0279
_refine_ls_R_factor_gt           0.0265
_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^)+(0.0323P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0635
_refine_ls_wR_factor_ref         0.0646
_reflns_number_gt                13203
_reflns_number_total             13654
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            nchem.1392-s12.cif
_cod_data_source_block           (DtbpO)2U(PhC6H4BBN)U(ODtbp)2_complex_6b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pca21
_cod_database_code               1508241