Al and Zn phenoxy-amidine complexes for lactide ROP catalysis.
Théron, Benjamin; Vaillant-Coindard, Valentin; Balan, Cédric; Rousselin, Yoann; Bayardon, Jérôme; Malacea-Kabbara, Raluca; Le Gendre, Pierre; Dalton transactions (Cambridge, England : 2003)  (2023) –; doi:10.1039/d3dt01216f

data_7713133
_publ_section_title
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 Al and Zn phenoxy-amidine complexes for lactide ROP catalysis.
;
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_paper_doi               10.1039/d3dt01216f
_journal_year                    2023
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C18 H20 N2 O'
_chemical_formula_sum            'C18 H20 N2 O'
_chemical_formula_weight         280.36
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-06-14
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2022-06-27 deposited with the CCDC.	2023-05-17 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   19.8302(12)
_cell_length_b                   8.1178(5)
_cell_length_c                   18.3922(12)
_cell_measurement_reflns_used    9903
_cell_measurement_temperature    110.0(1)
_cell_measurement_theta_max      27.33
_cell_measurement_theta_min      2.71
_cell_volume                     2960.7(3)
_computing_cell_refinement       'SAINT V8.40B (Bruker, 2016)'
_computing_data_collection       'APEX4 (Bruker, 2021)'
_computing_data_reduction        'SAINT V8.40B (Bruker, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT  (Sheldrick, 2015)'
_diffrn_ambient_temperature      110.0(1)
_diffrn_detector                 'CCD Plate'
_diffrn_detector_area_resol_mean '512 x 512'
_diffrn_detector_type            APEX2
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Nonius APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans''
_diffrn_radiation_collimation    '0.6 mm'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a~1~'
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0728
_diffrn_reflns_av_unetI/netI     0.0386
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            68139
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        24.998
_diffrn_reflns_theta_max         24.998
_diffrn_reflns_theta_min         2.054
_diffrn_source                   'X-ray tube'
_diffrn_source_current           5.0
_diffrn_source_power             0.1
_diffrn_source_target            Mo
_diffrn_source_type              'Siemens KFF Mo 2K-180'
_diffrn_source_voltage           20.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.9583
_exptl_absorpt_correction_T_min  0.8039
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1013 before and 0.0904 after correction.
The Ratio of minimum to maximum transmission is 0.8389.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.258
_exptl_crystal_description       block
_exptl_crystal_F_000             1200
_exptl_crystal_recrystallization_method
'The material was recrystallised from a mixture of DCM and pentane  by slow evaporation'
_exptl_crystal_size_max          0.662
_exptl_crystal_size_mid          0.558
_exptl_crystal_size_min          0.475
_refine_diff_density_max         0.743
_refine_diff_density_min         -0.410
_refine_diff_density_rms         0.117
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.192
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     394
_refine_ls_number_reflns         5224
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.192
_refine_ls_R_factor_all          0.0971
_refine_ls_R_factor_gt           0.0868
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1327P)^2^+3.4250P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2210
_refine_ls_wR_factor_ref         0.2340
_reflns_Friedel_coverage         0.934
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                4631
_reflns_number_total             5224
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt01216f2.cif
_cod_data_source_block           compound_L4H
_cod_database_code               7713133
_shelx_shelxl_version_number     2018/3
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0(4)
 1(4)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All C(H,H,H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
3. Others
 Sof(H11C)=Sof(H11D)=1-FVAR(1)
 Sof(H11A)=Sof(H11B)=FVAR(1)
 Sof(H9AE)=Sof(H9AF)=Sof(H11G)=Sof(H11H)=1-FVAR(2)
 Sof(H9AC)=Sof(H9AD)=Sof(H11E)=Sof(H11F)=FVAR(2)
 Fixed Sof: H9AA(0.8) H9AB(0.8) H9BC(0.2) H9BD(0.2) C10(0.8) H10A(0.8)
 H10B(0.8) C10*(0.2) H10C(0.2) H10D(0.2) C10A(0.77) H10E(0.77) H10F(0.77)
 C10B(0.23) H10G(0.23) H10H(0.23)
4.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C9(H9AA,H9AB), C9(H9BC,H9BD), C10(H10A,H10B), C10*(H10C,H10D),
 C11(H11A,H11B), C11(H11C,H11D), C8A(H8AA,H8AB), C9A(H9AC,H9AD), C9A(H9AE,H9AF),
  C10A(H10E,H10F), C11A(H11E,H11F), C11A(H11G,H11H), C10B(H10G,H10H)
4.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C3'(H3'), C4(H4), C4'(H4'), C5(H5), C5'(H5'), C6(H6), C6'(H6'),
 C3'A(H3'A), C3A(H3A), C4'A(H4'A), C4A(H4A), C5'A(H5'A), C5A(H5A), C6'A(H6'A),
 C6A(H6A)
4.c Idealised Me refined as rotating group:
 C7'(H7'A,H7'B,H7'C), C7'A(H7'D,H7'E,H7'F)
4.d Idealised tetrahedral OH refined as rotating group:
 O1(H1), O1A(H1A)
;
_shelx_res_checksum              26543
_shelx_hkl_checksum              16618
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a MITIGEN holder oil'
_olex2_submission_special_instructions 'No special instructions were received'