Synthesis and Characterization of Salalen Lanthanide Complexes and Their Application in the Polymerization ofrac-Lactide
Nie, Kun; Gu, Weikai; Yao, Yingming; Zhang, Yong; Shen, Qi; Organometallics 32 (2013) 2608–; doi:10.1021/om4001023

data_4080705
_publ_section_title
;
 Synthesis and Characterization of Salalen Lanthanide Complexes and Their
 Application in the Polymerization ofrac-Lactide
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2608
_journal_paper_doi               10.1021/om4001023
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C80 H114 N4 O6 Yb2, 2(C4 H8 O)'
_chemical_formula_sum            'C88 H130 N4 O8 Yb2'
_chemical_formula_weight         1718.04
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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                65.739(19)
_cell_angle_beta                 70.85(2)
_cell_angle_gamma                71.90(2)
_cell_formula_units_Z            1
_cell_length_a                   11.9932(13)
_cell_length_b                   15.0020(16)
_cell_length_c                   15.6481(17)
_cell_measurement_reflns_used    11175
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.0
_cell_volume                     2373.6(6)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0638
_diffrn_reflns_av_sigmaI/netI    0.1494
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            21907
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         3.04
_exptl_absorpt_coefficient_mu    2.007
_exptl_absorpt_correction_T_max  0.5008
_exptl_absorpt_correction_T_min  0.2967
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.202
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             890
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.70
_exptl_crystal_size_min          0.40
_refine_diff_density_max         2.130
_refine_diff_density_min         -2.103
_refine_diff_density_rms         0.211
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     471
_refine_ls_number_reflns         10576
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0878
_refine_ls_R_factor_gt           0.0623
_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^)+(0.1033P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1658
_refine_ls_wR_factor_ref         0.2056
_reflns_number_gt                6966
_reflns_number_total             10576
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om4001023_si_001.cif
_cod_data_source_block           complex6
_cod_original_cell_volume        2373.7(4)
_cod_database_code               4080705