Thermally Stable Uranium Dinitrogen Complex with Siloxide Supporting Ligands
Mansell, Stephen M.; Farnaby, Joy H.; Germeroth, Anne I.; Arnold, Polly L.; Organometallics 32 (2013) 4214–; doi:10.1021/om4003957

data_4081055
_publ_section_title
;
 Thermally Stable Uranium Dinitrogen Complex with Siloxide Supporting
 Ligands
;
_journal_issue                   15
_journal_name_full               Organometallics
_journal_page_first              4214
_journal_paper_doi               10.1021/om4003957
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C45 H87 N3 O Si7 U'
_chemical_formula_sum            'C45 H87 N3 O Si7 U'
_chemical_formula_weight         1120.84
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 95.759(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   27.4437(7)
_cell_length_b                   22.2208(6)
_cell_length_c                   20.8071(6)
_cell_measurement_reflns_used    9064
_cell_measurement_temperature    170(2)
_cell_measurement_theta_max      24.9730
_cell_measurement_theta_min      2.9724
_cell_volume                     12624.6(6)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
;
_computing_data_collection
;
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    SHELX-XS
_diffrn_ambient_temperature      170(2)
_diffrn_detector_area_resol_mean 16.1042
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1058
_diffrn_reflns_av_sigmaI/netI    0.1005
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            64114
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.98
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.733
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.70417
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
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            Colourless
_exptl_crystal_density_diffrn    1.179
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             4608
_exptl_crystal_size_max          0.3582
_exptl_crystal_size_mid          0.1041
_exptl_crystal_size_min          0.0737
_platon_squeeze_details
;
Disordered solvent was identified and modelled using SQUEEZE.
324 electrons  is approximately 6 molecules of hexane (3 in each void),
the crystallisation solvent.
;
_refine_diff_density_max         0.766
_refine_diff_density_min         -0.889
_refine_diff_density_rms         0.117
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     541
_refine_ls_number_reflns         11134
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0946
_refine_ls_R_factor_gt           0.0543
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0480P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1071
_refine_ls_wR_factor_ref         0.1185
_reflns_number_gt                7481
_reflns_number_total             11134
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            om4003957_si_002.cif
_cod_data_source_block           (Mes)3SiOUN''3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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      C2/c
_cod_database_code               4081055