Single-site bismuth alkoxide catalysts for the ring-opening polymerization of lactide.
Balasanthiran, Vagulejan; Chisholm, Malcolm H.; Durr, Christopher B.; Gallucci, Judith C.; Dalton transactions (Cambridge, England : 2003) 42 (2013) 11234–11241; doi:10.1039/c3dt50629k

data_7023070
_publ_section_title
;
 Single-site bismuth alkoxide catalysts for the ring-opening
 polymerization of lactide.
;
_journal_issue                   31
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11234
_journal_page_last               11241
_journal_paper_doi               10.1039/c3dt50629k
_journal_volume                  42
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety
'C128 H184 Bi4 Cl4 N8 O8, 0.6(C6 H19 N Si2), C4 H8 O, 0.2(C4 H10 O)'
_chemical_formula_sum            'C136.39 H205.36 Bi4 Cl4 N8.6 O9.2 Si1.2'
_chemical_formula_weight         3124.01
_chemical_name_systematic
;
?
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_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      2.4
_audit_creation_date             2012-12-10T16:51:36-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.4471(3)
_cell_length_b                   17.4510(3)
_cell_length_c                   58.3860(11)
_cell_measurement_reflns_used    11918
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      1.02
_cell_measurement_wavelength     0.71073
_cell_volume                     17776.7(5)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo (Otwinowski & Minor 1997) and SADABS (Bruker AXS)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0831
_diffrn_reflns_av_unetI/netI     0.0765
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       69
_diffrn_reflns_limit_l_min       -69
_diffrn_reflns_number            214449
_diffrn_reflns_theta_full        25.19
_diffrn_reflns_theta_max         25.19
_diffrn_reflns_theta_min         1.05
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    4.060
_exptl_absorpt_correction_T_max  0.745
_exptl_absorpt_correction_T_min  0.581
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS-2008/1 (Bruker AXS)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.167
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             6296.9
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.19
_refine_diff_density_max         1.784
_refine_diff_density_min         -0.851
_refine_diff_density_rms         0.167
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.023(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1426
_refine_ls_number_reflns         31482
_refine_ls_number_restraints     206
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0786
_refine_ls_R_factor_gt           0.0543
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0816P)^2^+40.4691P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1325
_refine_ls_wR_factor_ref         0.1439
_reflns_number_gt                25859
_reflns_number_total             31482
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt50629k.txt
_cod_data_source_block           chisholm1903
_cod_database_code               7023070