Rare-Earth Metal Bis(alkyl)s Supported by a Quinolinyl Anilido-Imine Ligand: Synthesis and Catalysis on Living Polymerization of ε-Caprolactone
Gao, Wei; Cui, Dongmei; Liu, Xiaoming; Zhang, Yu; Mu, Ying; Organometallics 27 (2008) 5889–; doi:10.1021/om800575p

data_4072079
_publ_section_title
;
 Rare-Earth Metal Bis(alkyl)s Supported by a Quinolinyl Anilido-Imine
 Ligand: Synthesis and Catalysis on Living Polymerization of
 \e-Caprolactone
;
_journal_issue                   22
_journal_name_full               Organometallics
_journal_page_first              5889
_journal_paper_doi               10.1021/om800575p
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C40 H58 N3 O Si2 Y'
_chemical_formula_weight         741.98
_chemical_name_systematic
; 
 ? 
;
_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                 64.610(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.2166(14)
_cell_length_b                   20.184(3)
_cell_length_c                   20.545(3)
_cell_measurement_temperature    187(2)
_cell_volume                     4202.0(10)
_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      187(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scan'
_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  0.1343
_diffrn_reflns_av_sigmaI/netI    0.1895
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            23457
_diffrn_reflns_theta_full        26.06
_diffrn_reflns_theta_max         26.06
_diffrn_reflns_theta_min         1.49
_exptl_absorpt_coefficient_mu    1.476
_exptl_absorpt_correction_T_max  0.7981
_exptl_absorpt_correction_T_min  0.6261
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1576
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.576
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.928
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         8271
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.928
_refine_ls_R_factor_all          0.1796
_refine_ls_R_factor_gt           0.0679
_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^)+(0.0472P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1113
_refine_ls_wR_factor_ref         0.1431
_reflns_number_gt                3770
_reflns_number_total             8271
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om800575p_si_001.cif
_cod_data_source_block           complex_Y
_cod_original_cell_volume        4202.0(9)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4072079