Synthesis, crystal structure and reactivity of uranium(IV) complexes with p-tert-butylcalix[4]arene ligands.
Salmon, Lionel; Thuéry, Pierre; Asfari, Zouhair; Ephritikhine, Michel; Dalton transactions (Cambridge, England : 2003)  (2006) 3006–3014; doi:10.1039/b601237j

data_7007187
_publ_section_title
;
 Synthesis, crystal structure and reactivity of uranium(IV) complexes
 with p-tert-butylcalix[4]arene ligands.
;
_journal_issue                   24
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3006
_journal_page_last               3014
_journal_paper_doi               10.1039/b601237j
_journal_year                    2006
_chemical_formula_sum            'C104 H140 Cl2 Li2 O13 U2'
_chemical_formula_weight         2159.00
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 98.381(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   17.1281(15)
_cell_length_b                   17.3621(16)
_cell_length_c                   17.9317(10)
_cell_measurement_reflns_used    95857
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.68
_cell_measurement_theta_min      2.94
_cell_volume                     5275.6(7)
_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 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius Kappa-CCD area-detector diffractometer'
_diffrn_measurement_method       'two \f and five \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  0.0882
_diffrn_reflns_av_sigmaI/netI    0.0473
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            95857
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         2.94
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_exptl_absorpt_coefficient_mu    3.172
_exptl_absorpt_correction_T_max  0.801
_exptl_absorpt_correction_T_min  0.524
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details   'program DELABS from PLATON (Spek, 2003)'
_exptl_crystal_colour            'translucent light green'
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_meas      ?
_exptl_crystal_description       platelet
_exptl_crystal_F_000             2184
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.275
_refine_diff_density_min         -0.899
_refine_diff_density_rms         0.123
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     622
_refine_ls_number_reflns         9990
_refine_ls_number_restraints     90
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0625
_refine_ls_R_factor_gt           0.0419
_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^)+(0.0529P)^2^+17.0312P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1047
_refine_ls_wR_factor_ref         0.1114
_reflns_number_gt                7801
_reflns_number_total             9990
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b601237j.txt
_cod_data_source_block           7.thf
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7007187