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_7023069
_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_compound_source        'synthesis as described'
_chemical_formula_moiety         'C72 H104 Bi2 Cl2 N4 O4, 4(C H2 Cl2)'
_chemical_formula_sum            'C76 H112 Bi2 Cl10 N4 O4'
_chemical_formula_weight         1918.16
_chemical_name_common            'Chisholm 1919'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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      2.4
_audit_creation_date             2012-11-01T16:18:41-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 103.7560(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   15.2904(5)
_cell_length_b                   10.4994(3)
_cell_length_c                   27.3011(8)
_cell_measurement_reflns_used    7947
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      1.018
_cell_measurement_wavelength     0.71073
_cell_volume                     4257.2(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_orient_matrix_type       'by Bruker AXS Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      0.040367
_diffrn_orient_matrix_UB_12      0.0567978
_diffrn_orient_matrix_UB_13      -0.0141766
_diffrn_orient_matrix_UB_21      -0.019397
_diffrn_orient_matrix_UB_22      0.0745796
_diffrn_orient_matrix_UB_23      0.0176077
_diffrn_orient_matrix_UB_31      0.0502774
_diffrn_orient_matrix_UB_32      -0.0168294
_diffrn_orient_matrix_UB_33      0.0301836
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.112
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            14499
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.4
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    4.488
_exptl_absorpt_correction_T_max  0.698
_exptl_absorpt_correction_T_min  0.541
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'HKL Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.496
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1928
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.08
_refine_diff_density_max         4.624
_refine_diff_density_min         -3.421
_refine_diff_density_rms         0.469
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         7492
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.1008
_refine_ls_R_factor_gt           0.0705
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1387P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1878
_refine_ls_wR_factor_ref         0.205
_reflns_number_gt                5473
_reflns_number_total             7492
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3dt50629k.txt
_cod_data_source_block           cbd031
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7023069