Rare-Earth Complexes with Multidentate Tethered Phenoxy-Amidinate Ligands: Synthesis, Structure, and Activity in Ring-Opening Polymerization of Lactide
Sinenkov, Mikhail; Kirillov, Evgeny; Roisnel, Thierry; Fukin, Georgy; Trifonov, Alexander; Carpentier, Jean-François; Organometallics 30 (2011) 5509–; doi:10.1021/om200786u

data_4065425
_publ_section_title
;
 Rare-Earth Complexes with Multidentate Tethered Phenoxy-Amidinate
 Ligands: Synthesis, Structure, and Activity in Ring-Opening
 Polymerization of Lactide
;
_journal_issue                   20
_journal_name_full               Organometallics
_journal_page_first              5509
_journal_paper_doi               10.1021/om200786u
_journal_volume                  30
_journal_year                    2011
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         '2(C66 H120 N6 Nd2 O2 Si4)'
_chemical_formula_sum            'C66 H120 N6 Nd2 O2 Si4'
_chemical_formula_weight         1430.52
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2010-05-10T18:04:33-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                86.784(4)
_cell_angle_beta                 81.542(4)
_cell_angle_gamma                84.192(4)
_cell_formula_units_Z            4
_cell_length_a                   14.7571(14)
_cell_length_b                   19.984(2)
_cell_length_c                   27.048(2)
_cell_measurement_reflns_used    9107
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.42
_cell_measurement_theta_min      2.4
_cell_measurement_wavelength     0.71073
_cell_volume                     7842.5(12)
_computing_cell_refinement       'Bruker SMART (Bruker, 2002)'
_computing_data_collection       'Bruker SAINT (Bruker, 2002)'
_computing_data_reduction        'Bruker SAINT (Bruker, 2002)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material
;
           WinGX publication routines (Farrugia, 1999),
           CRYSCAL (T. Roisnel, local program)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999))'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0719
_diffrn_reflns_av_unetI/netI     0.066
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            121775
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.95
_exptl_absorpt_coefficient_mu    1.411
_exptl_absorpt_correction_T_max  0.787
_exptl_absorpt_correction_T_min  0.615
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3000
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.17
_platon_squeeze_details
;
;
_refine_diff_density_max         5.188
_refine_diff_density_min         -4.067
_refine_diff_density_rms         0.146
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.107
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1372
_refine_ls_number_reflns         35180
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.107
_refine_ls_R_factor_all          0.065
_refine_ls_R_factor_gt           0.0539
_refine_ls_shift/su_max          0.024
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0678P)^2^+19.8249P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1448
_refine_ls_wR_factor_ref         0.1535
_reflns_number_gt                28956
_reflns_number_total             35180
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om200786u_si_001.cif
_cod_data_source_block           9
_cod_database_code               4065425