Unprecedented Bending and Rearrangement of f-Element Sandwich Complexes Induced by Superbulky Cyclooctatetraenide Ligands
Volker Lorenz; Benjamin M. Schmiege; Cristian G. Hrib; Joseph W. Ziller; Anja Edelmann; Steffen Blaurock; William J. Evans; Frank T. Edelmann; Journal of the American Chemical Society 133 (2011) 1257–1259; doi:10.1021/ja109604t

data_4105597
_publ_section_title
;
 Unprecedented Bending and Rearrangement of f-Element Sandwich Complexes
 Induced by Superbulky Cyclooctatetraenide Ligands
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1257
_journal_page_last               1259
_journal_paper_doi               10.1021/ja109604t
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C124 H124 Ce Li O4 Si4'
_chemical_formula_weight         1937.65
_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                88.31(3)
_cell_angle_beta                 82.44(3)
_cell_angle_gamma                63.69(3)
_cell_formula_units_Z            2
_cell_length_a                   14.375(6)
_cell_length_b                   14.420(6)
_cell_length_c                   28.450(7)
_cell_measurement_reflns_used    672
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      29.29
_cell_measurement_theta_min      2.01
_cell_volume                     5238(4)
_computing_cell_refinement       'Stoe XAREA'
_computing_data_collection       'Stoe XAREA'
_computing_data_reduction        'Stoe XAREA'
_computing_molecular_graphics    'Bruker SHELXTL PLUS'
_computing_publication_material  'Bruker SHELXTL PLUS'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Stoe IPDS 2T'
_diffrn_measurement_method       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  0.0289
_diffrn_reflns_av_sigmaI/netI    0.0509
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            40026
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.01
_exptl_absorpt_coefficient_mu    0.534
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_description       platelet
_exptl_crystal_F_000             2034
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.424
_refine_diff_density_min         -1.284
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.945
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1207
_refine_ls_number_reflns         25692
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.945
_refine_ls_R_factor_all          0.0537
_refine_ls_R_factor_gt           0.0377
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0523P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0843
_refine_ls_wR_factor_ref         0.0886
_reflns_number_gt                20241
_reflns_number_total             25692
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja109604t_si_004.cif
_cod_data_source_block           ip2_213a
_cod_original_cell_volume        5237(3)
_cod_database_code               4105597