Linear uranium metallocenes with polydentate aromatic nitrogen ligands.
Berthet, Jean-Claude; Maynadié, Jérôme; Thuéry, Pierre; Ephritikhine, Michel; Dalton transactions (Cambridge, England : 2003) 39 (2010) 6801–6807; doi:10.1039/c002279a

data_7025621
_publ_section_title
;
 Linear uranium metallocenes with polydentate aromatic nitrogen ligands.
;
_journal_issue                   29
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6801
_journal_page_last               6807
_journal_paper_doi               10.1039/c002279a
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C39 H47 N5 U, 2(C24 H20 B)'
_chemical_formula_sum            'C87 H87 B2 N5 U'
_chemical_formula_weight         1462.27
_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     heavy
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                85.358(5)
_cell_angle_beta                 86.673(5)
_cell_angle_gamma                81.625(6)
_cell_formula_units_Z            4
_cell_length_a                   9.6247(8)
_cell_length_b                   25.487(2)
_cell_length_c                   29.339(3)
_cell_measurement_reflns_used    159383
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.68
_cell_measurement_theta_min      2.92
_cell_volume                     7089.1(11)
_computing_cell_refinement       'HKL2000 (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction        'HKL2000 (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1999)'
_computing_publication_material
'SHELXTL (Sheldrick, 1999); PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.931
_diffrn_measured_fraction_theta_max 0.931
_diffrn_measurement_device_type
'Nonius Kappa-CCD area-detector diffractometer'
_diffrn_measurement_method       'two \f and six \w scans with 2\% steps'
_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  0.1126
_diffrn_reflns_av_sigmaI/netI    0.0978
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            159383
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         2.92
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.340
_exptl_absorpt_correction_T_max  0.911
_exptl_absorpt_correction_T_min  0.691
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            'translucent dark orange'
_exptl_crystal_density_diffrn    1.370
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2984
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         3.180
_refine_diff_density_min         -1.424
_refine_diff_density_rms         0.132
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.866
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           fullcycle
_refine_ls_number_parameters     1735
_refine_ls_number_reflns         25070
_refine_ls_number_restraints     116
_refine_ls_restrained_S_all      0.868
_refine_ls_R_factor_all          0.2249
_refine_ls_R_factor_gt           0.0791
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0548P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1389
_refine_ls_wR_factor_ref         0.1729
_reflns_number_gt                9461
_reflns_number_total             25070
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c002279a.txt
_cod_data_source_block           4
_cod_database_code               7025621