Copolymerization of CO2and meso epoxides using enantioselective β-diiminate catalysts: a route to highly isotactic polycarbonates
Ellis, W. Chadwick; Jung, Yukyung; Mulzer, Michael; Di Girolamo, Rocco; Lobkovsky, Emil B.; Coates, Geoffrey W.; Chemical Science 5 (2014) 4004–; doi:10.1039/C4SC01686F

data_1517212
_publ_section_title
;
 Copolymerization of CO2and meso epoxides using enantioselective
 \b-diiminate catalysts: a route to highly isotactic polycarbonates
;
_journal_issue                   10
_journal_name_full               'Chemical Science'
_journal_page_first              4004
_journal_paper_doi               10.1039/C4SC01686F
_journal_volume                  5
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C58 H60 F6 N4 O4 Zn2'
_chemical_formula_sum            'C58 H60 F6 N4 O4 Zn2'
_chemical_formula_weight         1121.84
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.5462(5)
_cell_length_b                   19.2935(7)
_cell_length_c                   20.7468(7)
_cell_measurement_reflns_used    8723
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.05
_cell_measurement_theta_min      2.33
_cell_volume                     5422.3(3)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker X8 APEX II diffractometer'
_diffrn_measurement_method       'phi and omega 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  0.0203
_diffrn_reflns_av_sigmaI/netI    0.0501
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            18303
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         1.44
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.955
_exptl_absorpt_correction_T_max  0.7013
_exptl_absorpt_correction_T_min  0.7013
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.374
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2328
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.201
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.005(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     677
_refine_ls_number_reflns         9628
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0319
_refine_ls_R_factor_gt           0.0271
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0166P)^2^+0.2283P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0639
_refine_ls_wR_factor_ref         0.0660
_reflns_number_gt                8845
_reflns_number_total             9628
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4sc01686f2.cif
_cod_data_source_block           ce1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 1517209--1517212.cif.
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1517212