The uranium-nitrogen bond in U IV complexes supported by the hydrotris(3,5-dimethylpyrazolyl)borate ligand.
Silva, Manuela; Antunes, Maria Augusta; Dias, Marta; Domingos, Angela; dos Santos, Isabel Cordeiro; Marçalo, Joaquim; Marques, Noémia; Dalton transactions (Cambridge, England : 2003)  (2005) 3353–3358; doi:10.1039/b509229a

data_7000113
_publ_section_title
;
 The uranium-nitrogen bond in U IV complexes supported by the
 hydrotris(3,5-dimethylpyrazolyl)borate ligand.
;
_journal_issue                   20
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3353
_journal_page_last               3358
_journal_paper_doi               10.1039/b509229a
_journal_year                    2005
_chemical_formula_moiety         'C27 H32 B Cl2 N7 U'
_chemical_formula_sum            'C27 H32 B Cl2 N7 U'
_chemical_formula_weight         774.34
_chemical_name_systematic
;
?
;
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                75.667(9)
_cell_angle_beta                 88.415(11)
_cell_angle_gamma                78.416(10)
_cell_formula_units_Z            2
_cell_length_a                   8.1647(11)
_cell_length_b                   10.2881(11)
_cell_length_c                   18.947(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      10
_cell_measurement_theta_min      8
_cell_volume                     1510.2(3)
_computing_cell_refinement       'CAD4 Software (Enraf-Nonius,1994) '
_computing_data_collection       'CAD4 Software (Enraf-Nonius,1994) '
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'ORTEP3 (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare, 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  cad4
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0868
_diffrn_reflns_av_sigmaI/netI    0.2274
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            5697
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.09
_diffrn_standards_interval_count 300
_diffrn_standards_interval_time  3600
_diffrn_standards_number         5
_exptl_absorpt_coefficient_mu    5.580
_exptl_absorpt_correction_T_max  0.4941
_exptl_absorpt_correction_T_min  0.3314
_exptl_absorpt_correction_type   'psi-scan (North,1968)'
_exptl_crystal_colour            'golden brown'
_exptl_crystal_density_diffrn    1.703
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             748
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.985
_refine_diff_density_min         -1.347
_refine_diff_density_rms         0.221
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.942
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         5297
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.942
_refine_ls_R_factor_all          0.1762
_refine_ls_R_factor_gt           0.0792
_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^)+(0.0109P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0855
_refine_ls_wR_factor_ref         0.1010
_reflns_number_gt                2849
_reflns_number_total             5297
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b509229a.txt
_cod_data_source_block           utpclnph
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7000113