Distorted Equatorial Coordination Environments and Weakening of UO Bonds in Uranyl Complexes Containing NCN and NPN Ligands
Mark J. Sarsfield; Madeleine Helliwell; James Raftery; Inorganic Chemistry 43 (2004) 3170–3179; doi:10.1021/ic035349c

data_4310995
_publ_section_title
;
 Distorted Equatorial Coordination Environments and Weakening of UO Bonds
 in Uranyl Complexes Containing NCN and NPN Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3170
_journal_page_last               3179
_journal_paper_doi               10.1021/ic035349c
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C26 H46 N4 O2 Si4 U'
_chemical_formula_weight         797.06
_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                 124.896(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.534(9)
_cell_length_b                   11.315(4)
_cell_length_c                   15.428(6)
_cell_measurement_reflns_used    2479
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.13
_cell_measurement_theta_min      2.24
_cell_volume                     3370(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.1165
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            9461
_diffrn_reflns_theta_full        26.47
_diffrn_reflns_theta_max         26.47
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    4.987
_exptl_absorpt_correction_T_max  0.8648
_exptl_absorpt_correction_T_min  0.6354
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.571
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1576
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.03
_refine_diff_density_max         3.529
_refine_diff_density_min         -6.991
_refine_diff_density_rms         0.270
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.978
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         9461
_refine_ls_number_restraints     113
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0599
_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^)+(0.0566P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1306
_refine_ls_wR_factor_ref         0.1348
_reflns_number_gt                7645
_reflns_number_total             9461
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic035349csi20040329_124132_1.cif
_cod_data_source_block           hklf5abs
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4310995