One ligand fits all: lanthanide and actinide sandwich complexes comprising the 1,4-bis(trimethylsilyl)cyclooctatetraenyl (=COT′′) ligand
Rausch, Janek; Apostolidis, Christos; Walter, Olaf; Lorenz, Volker; Hrib, Cristian G.; Hilfert, Liane; Kühling, Marcel; Busse, Sabine; Edelmann, Frank T.; New J. Chem. 39 (2015) 7656–; doi:10.1039/C5NJ00991J

data_7054899
_publ_section_title
;
 One ligand fits all: lanthanide and actinide sandwich complexes
 comprising the 1,4-bis(trimethylsilyl)cyclooctatetraenyl
 (=COT&#x2032;&#x2032;) ligand
;
_journal_issue                   10
_journal_name_full               'New J. Chem.'
_journal_page_first              7656
_journal_paper_doi               10.1039/C5NJ00991J
_journal_volume                  39
_journal_year                    2015
_chemical_formula_moiety         'C28 H48 Si4 U'
_chemical_formula_sum            'C28 H48 Si4 U'
_chemical_formula_weight         735.05
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2015-02-16 deposited with the CCDC.
2015-06-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.6598(12)
_cell_length_b                   20.3542(18)
_cell_length_c                   24.645(2)
_cell_measurement_reflns_used    9831
_cell_measurement_temperature    473(2)
_cell_measurement_theta_max      28.33
_cell_measurement_theta_min      2.165
_cell_volume                     6350.5(10)
_computing_cell_refinement       'APEX II (Bruker, 2007)'
_computing_data_collection       'APEX II (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics
'XPMA (Zsolnai, 1996), ORTEP (Farrugia, 1997)'
_computing_publication_material  'publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      473(2)
_diffrn_detector_area_resol_mean 66
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.961
_diffrn_measurement_device_type  'Bruker Apex II Quazar'
_diffrn_measurement_method       'combined omega- and phi-scan'
_diffrn_radiation_source         'Microfocus Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0551
_diffrn_reflns_av_unetI/netI     0.0243
_diffrn_reflns_laue_measured_fraction_full 0.999
_diffrn_reflns_laue_measured_fraction_max 0.961
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            96294
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.961
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         28.528
_diffrn_reflns_theta_min         1.653
_exptl_absorpt_coefficient_mu    5.277
_exptl_absorpt_correction_T_max  0.8927
_exptl_absorpt_correction_T_min  0.5426
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   (sadabs)
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.538
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             2912
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.01
_refine_diff_density_max         1.543
_refine_diff_density_min         -1.122
_refine_diff_density_rms         0.183
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.170
_refine_ls_hydrogen_treatment    refU
_refine_ls_matrix_type           full
_refine_ls_number_parameters     314
_refine_ls_number_reflns         7752
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.170
_refine_ls_R_factor_all          0.0362
_refine_ls_R_factor_gt           0.0238
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0477P)^2^+2.4261P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0650
_refine_ls_wR_factor_ref         0.0838
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6419
_reflns_number_total             7752
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5nj00991j1.cif
_cod_data_source_block           cait5
_cod_depositor_comments
'Adding full bibliography for 7054898--7054908.cif.'
_cod_original_cell_volume        6350.6(10)
_cod_database_code               7054899
_shelxl_version_number           2013-2
_shelx_res_checksum              69872