Highly Isoselective and Active Zinc Catalysts for rac-Lactide Polymerization: Effect of Pendant Groups of Aminophenolate Ligands
Kan, Chao; Hu, Jianwen; Huang, Yang; Wang, Haobing; Ma, Haiyan; Macromolecules 50 (2017) 7911–; doi:10.1021/acs.macromol.7b01420

data_1547594
_publ_section_title
;
 Highly Isoselective and Active Zinc Catalysts for rac-Lactide
 Polymerization: Effect of Pendant Groups of Aminophenolate Ligands
;
_journal_issue                   20
_journal_name_full               Macromolecules
_journal_page_first              7911
_journal_paper_doi               10.1021/acs.macromol.7b01420
_journal_volume                  50
_journal_year                    2017
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C53 H63 N3 O2 Si2 Zn'
_chemical_formula_sum            'C53 H63 N3 O2 Si2 Zn'
_chemical_formula_weight         895.61
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-06-15
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 116.765(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   12.8617(11)
_cell_length_b                   16.6610(15)
_cell_length_c                   12.9222(11)
_cell_measurement_reflns_used    3656
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.77
_cell_measurement_theta_min      2.22
_cell_volume                     2472.4(4)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0423
_diffrn_reflns_av_unetI/netI     0.0836
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            20518
_diffrn_reflns_point_group_measured_fraction_full 0.851
_diffrn_reflns_point_group_measured_fraction_max 0.847
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.624
_diffrn_reflns_theta_min         1.765
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.587
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6241
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0688 before and 0.0501 after correction.
The Ratio of minimum to maximum transmission is 0.8370.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.203
_exptl_crystal_description       block
_exptl_crystal_F_000             952
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.297
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details
;
 Flack x determined using 1801 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.018(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.950
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     558
_refine_ls_number_reflns         9728
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.949
_refine_ls_R_factor_all          0.0882
_refine_ls_R_factor_gt           0.0433
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0311P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0767
_refine_ls_wR_factor_ref         0.0894
_reflns_Friedel_coverage         0.640
_reflns_Friedel_fraction_full    0.691
_reflns_Friedel_fraction_max     0.684
_reflns_number_gt                6279
_reflns_number_total             9728
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ma7b01420_si_001.cif
_cod_data_source_block           mo_dm15490_0m
_cod_depositor_comments
'Adding full bibliography for 1547592--1547598.cif.'
_cod_database_code               1547594
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.933
_shelx_estimated_absorpt_t_min   0.892
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C10(H10), C11(H11)
2.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C8(H8A,H8B), C24(H24A,H24B), C25(H25A,H25B), C26(H26A,H26B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C5(H5), C13(H13), C14(H14), C15(H15), C16(H16), C17(H17), C19(H19),
 C20(H20), C21(H21), C22(H22), C23(H23), C31(H31), C32(H32), C33(H33), C34(H34),
  C35(H35), C37(H37), C38(H38), C39(H39), C40(H40), C41(H41), C43(H43),
 C44(H44), C45(H45), C46(H46), C47(H47)
2.d Idealised Me refined as rotating group:
 C27(H27A,H27B,H27C), C28(H28A,H28B,H28C), C48(H48A,H48B,H48C), C49(H49A,H49B,
 H49C), C50(H50A,H50B,H50C), C51(H51A,H51B,H51C), C52(H52A,H52B,H52C), C53(H53A,
 H53B,H53C)
;
_shelx_res_checksum              50757
_shelx_hkl_checksum              96005
_olex2_submission_special_instructions 'No special instructions were received'