C3-Symmetric Chiral Organolanthanide Complexes: Synthesis, Characterization, and Stereospecific Polymerization of α-Olefins‖
Lukešová, Lenka; Ward, Benjamin D.; Bellemin-Laponnaz, Stéphane; Wadepohl, Hubert; Gade, Lutz H.; Organometallics 26 (2007) 4652–; doi:10.1021/om700504f

data_4073640
_publ_section_title
;
 C3-Symmetric Chiral Organolanthanide Complexes:&#x00A0; Synthesis,
 Characterization, and Stereospecific Polymerization of \a-Olefins&#x2016;
;
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              4652
_journal_paper_doi               10.1021/om700504f
_journal_volume                  26
_journal_year                    2007
_chemical_absolute_configuration ad
_chemical_formula_sum            'C32 H66 Er N3 O3 Si3'
_chemical_formula_weight         792.41
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 102.0110(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.2557(6)
_cell_length_b                   19.0994(11)
_cell_length_c                   10.3659(6)
_cell_measurement_temperature    100(2)
_cell_volume                     1986.0(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'PLATON (Spek, 1980-2005)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'DIRDIF (Beurskens, 1999)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0588
_diffrn_reflns_av_sigmaI/netI    0.0495
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            41782
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.01
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    2.235
_exptl_absorpt_correction_T_max  0.7460
_exptl_absorpt_correction_T_min  0.5598
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             826
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.846
_refine_diff_density_min         -0.928
_refine_diff_density_rms         0.104
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.011(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     395
_refine_ls_number_reflns         9856
_refine_ls_number_restraints     37
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0319
_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^)+(0.0250P)^2^+1.6322P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0651
_refine_ls_wR_factor_ref         0.0682
_reflns_number_gt                8740
_reflns_number_total             9856
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om700504f-file001.cif
_cod_data_source_block           complex_4
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4073640