Diastereoselective synthesis of chiral aminophenolate magnesium complexes and their application in the stereoselective polymerization of rac-lactide and rac-β-butyrolactone.
Wang, Haobing; Guo, Jianshuang; Yang, Yang; Ma, Haiyan; Dalton transactions (Cambridge, England : 2003) 45 (2016) 10942–10953; doi:10.1039/c6dt01126h

data_7039365
_publ_section_title
;
 Diastereoselective synthesis of chiral aminophenolate magnesium complexes
 and their application in the stereoselective polymerization of
 rac-lactide and rac-\b-butyrolactone.
;
_journal_issue                   27
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10942
_journal_page_last               10953
_journal_paper_doi               10.1039/c6dt01126h
_journal_volume                  45
_journal_year                    2016
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C31 H53 Mg N3 O Si2'
_chemical_formula_sum            'C31 H53 Mg N3 O Si2'
_chemical_formula_weight         564.25
_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             2015-09-16
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_audit_update_record
;
2016-02-01 deposited with the CCDC.
2016-05-31 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 111.227(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.6459(18)
_cell_length_b                   13.6541(18)
_cell_length_c                   18.104(2)
_cell_measurement_reflns_used    2464
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      19.334
_cell_measurement_theta_min      2.413
_cell_volume                     3374.7(7)
_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    'SIR2004 (Burla et al., 2007)'
_diffrn_ambient_temperature      130
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0647
_diffrn_reflns_av_unetI/netI     0.1124
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            24894
_diffrn_reflns_point_group_measured_fraction_full 0.895
_diffrn_reflns_point_group_measured_fraction_max 0.895
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         25.996
_diffrn_reflns_theta_min         1.207
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.150
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6748
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0643 before and 0.0539 after correction.
The Ratio of minimum to maximum transmission is 0.9044.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.111
_exptl_crystal_description       block
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.063
_refine_diff_density_min         -0.357
_refine_diff_density_rms         0.067
_refine_ls_abs_structure_details
;
 Flack x determined using 2102 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.15(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     703
_refine_ls_number_reflns         11868
_refine_ls_number_restraints     73
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.1247
_refine_ls_R_factor_gt           0.0673
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0840P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1493
_refine_ls_wR_factor_ref         0.1796
_reflns_Friedel_coverage         0.713
_reflns_Friedel_fraction_full    0.780
_reflns_Friedel_fraction_max     0.780
_reflns_number_gt                7214
_reflns_number_total             11868
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6dt01126h2.cif
_cod_data_source_block           mo_dm15695_0m
_cod_depositor_comments
'Adding full bibliography for 7039365--7039368.cif.'
_cod_original_cell_volume        3374.8(7)
_cod_database_code               7039365
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.973
_shelx_estimated_absorpt_t_min   0.963
_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. Uiso/Uaniso restraints and constraints
C13 \\sim C14 \\sim C15 \\sim C16: within 2A with sigma of 0.005 and sigma for
terminal atoms of 0.01
C44 \\sim C45 \\sim C46 \\sim C47: within 2A with sigma of 0.005 and sigma for
terminal atoms of 0.01
Uanis(C45) \\sim Ueq, Uanis(C46) \\sim Ueq, Uanis(C47) \\sim Ueq, Uanis(C14)
\\sim Ueq, Uanis(C15) \\sim Ueq, Uanis(C16) \\sim Ueq: with sigma of 0.005 and
sigma for terminal atoms of 0.01
3.a Ternary CH refined with riding coordinates:
 C9(H9), C40(H40)
3.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C8(H8A,H8B), C10(H10A,H10B), C11(H11A,H11B), C12(H12A,H12B),
 C13(H13A,H13B), C14(H14A,H14B), C15(H15A,H15B), C17(H17A,H17B), C38(H38A,H38B),
  C39(H39A,H39B), C41(H41A,H41B), C42(H42A,H42B), C43(H43A,H43B), C44(H44A,
 H44B), C45(H45A,H45B), C46(H46A,H46B), C48(H48A,H48B)
3.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C5(H5), C19(H19), C20(H20), C21(H21), C22(H22), C23(H23), C34(H34),
 C36(H36), C50(H50), C51(H51), C52(H52), C53(H53), C54(H54)
3.d Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C), C26(H26A,H26B,
 H26C), C27(H27A,H27B,H27C), C28(H28A,H28B,H28C), C29(H29A,H29B,H29C), C30(H30A,
 H30B,H30C), C31(H31A,H31B,H31C), C47(H47A,H47B,H47C), C55(H55A,H55B,H55C),
 C56(H56A,H56B,H56C), C57(H57A,H57B,H57C), C58(H58A,H58B,H58C), C59(H59A,H59B,
 H59C), C60(H60A,H60B,H60C), C61(H61A,H61B,H61C), C62(H62A,H62B,H62C)
;
_shelx_res_checksum              4141
_olex2_submission_special_instructions 'No special instructions were received'