Synthesis and characterization of benzoxazine-functionalized amine bridged bis(phenolate) lanthanide complexes and their application in the ring-opening polymerization of cyclic esters.
Liang, Zhenhua; Ni, Xufeng; Li, Xue; Shen, Zhiquan; Dalton transactions (Cambridge, England : 2003) 41 (2012) 2812–2819; doi:10.1039/c2dt11736c

data_7018173
_publ_section_title
;
 Synthesis and characterization of benzoxazine-functionalized amine
 bridged bis(phenolate) lanthanide complexes and their application in the
 ring-opening polymerization of cyclic esters.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2812
_journal_page_last               2819
_journal_paper_doi               10.1039/c2dt11736c
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C86 H124 N4 Na O8 Yb'
_chemical_formula_sum            'C86 H124 N4 Na O8 Yb'
_chemical_formula_weight         1537.92
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 117.684(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   32.2724(8)
_cell_length_b                   12.5414(2)
_cell_length_c                   27.4732(6)
_cell_measurement_reflns_used    15341
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.3005
_cell_measurement_theta_min      2.8453
_cell_volume                     9846.6(5)
_computing_cell_refinement       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_collection       'CrysAlis PRO'
_computing_data_reduction        'CrysAlis PRO'
_computing_molecular_graphics    'OLEX2 (Dolomanov et al., 2009)'
_computing_publication_material  OLEX2
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.3592
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_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  0.0327
_diffrn_reflns_av_sigmaI/netI    0.0391
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            26085
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         2.85
_exptl_absorpt_coefficient_mu    1.000
_exptl_absorpt_correction_T_max  0.8327
_exptl_absorpt_correction_T_min  0.8026
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis PRO (Oxford Diffraction, 2010)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.037
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3252
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.19
_platon_squeeze_details
;
;
_refine_diff_density_max         0.452
_refine_diff_density_min         -0.336
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.097
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     464
_refine_ls_number_reflns         9001
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0325
_refine_ls_R_factor_gt           0.0283
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0420P)^2^+12.2671P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0790
_refine_ls_wR_factor_ref         0.0813
_reflns_number_gt                8228
_reflns_number_total             9001
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt11736c.txt
_cod_data_source_block           110505_ybbb2
_cod_original_cell_volume        9846.6(4)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7018173