Synthesis and Characterization of Lanthanide Amides Bearing Aminophenoxy Ligands and Their Catalytic Activity for the Polymerization of Lactides
Zhang, Jie; Qiu, Jinshui; Yao, Yingming; Zhang, Yong; Wang, Yaorong; Shen, Qi; Organometallics 31 (2012) 3138–; doi:10.1021/om300036a

data_4078019
_publ_section_title
;
 Synthesis and Characterization of Lanthanide Amides Bearing Aminophenoxy
 Ligands and Their Catalytic Activity for the Polymerization of Lactides
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              3138
_journal_paper_doi               10.1021/om300036a
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C56 H94 La2 N4 O4 Si4, 2(C7 H8)'
_chemical_formula_sum            'C70 H110 La2 N4 O4 Si4'
_chemical_formula_weight         1461.80
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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                 110.3970(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.4370(7)
_cell_length_b                   20.8532(11)
_cell_length_c                   15.5541(9)
_cell_measurement_reflns_used    14953
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.2
_cell_volume                     3781.0(4)
_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 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0374
_diffrn_reflns_av_sigmaI/netI    0.0486
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            18923
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.24
_exptl_absorpt_coefficient_mu    1.223
_exptl_absorpt_correction_T_max  0.789
_exptl_absorpt_correction_T_min  0.562
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.284
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.969
_refine_diff_density_min         -1.124
_refine_diff_density_rms         0.093
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.109
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         7004
_refine_ls_number_restraints     29
_refine_ls_restrained_S_all      1.116
_refine_ls_R_factor_all          0.0662
_refine_ls_R_factor_gt           0.0576
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0572P)^2^+7.5360P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1346
_refine_ls_wR_factor_ref         0.1398
_reflns_number_gt                6200
_reflns_number_total             7004
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300036a_si_001.cif
_cod_data_source_block           complex3
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4078019