Structurally Characterized Lead(II) Alkoxides as Potent Ring-Opening Polymerization Catalysts
Wang, Lingfang; Fadlallah, Sami; Bellini, Clément; Orione, Clément; Dorcet, Vincent; Carpentier, Jean-François; Sarazin, Yann; Organometallics 34 (2015) 1321–; doi:10.1021/acs.organomet.5b00052

data_4087390
_publ_section_title
;
 Structurally Characterized Lead(II) Alkoxides as Potent Ring-Opening
 Polymerization Catalysts
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              1321
_journal_paper_doi               10.1021/acs.organomet.5b00052
_journal_volume                  34
_journal_year                    2015
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C12 H27 Li O3 Pb'
_chemical_formula_sum            'C12 H27 Li O3 Pb'
_chemical_formula_weight         433.47
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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_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             2014-01-10T14:18:23-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 106.783(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5057(9)
_cell_length_b                   18.3563(17)
_cell_length_c                   10.0028(9)
_cell_measurement_reflns_used    5160
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.33
_cell_measurement_theta_min      2.4
_cell_measurement_wavelength     0.71073
_cell_volume                     1671.0(3)
_computing_cell_refinement       'Bruker APEX2 (Bruker, 2006)'
_computing_data_collection       'Bruker APEX2 (Bruker, 2006)'
_computing_data_reduction        'Bruker APEX2 (Bruker, 2006)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material
;
           WinGX publication routines (Farrugia, 2012),
           CRYSCAL (T. Roisnel, local program)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.091
_diffrn_reflns_av_unetI/netI     0.0645
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            25241
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    10.091
_exptl_absorpt_correction_T_max  0.080
_exptl_absorpt_correction_T_min  0.020
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.723
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.25
_refine_diff_density_max         2.059
_refine_diff_density_min         -2.069
_refine_diff_density_rms         0.221
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         3818
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0544
_refine_ls_R_factor_gt           0.0387
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0199P)^2^+7.7880P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0857
_refine_ls_wR_factor_ref         0.0916
_reflns_number_gt                3031
_reflns_number_total             3818
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om5b00052_si_004.cif
_cod_data_source_block           WLF044
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4087390