Magnesium and zinc complexes bearing NNO-tridentate ketiminate ligands: synthesis, structures and catalysis in the ring-opening polymerization of lactides.
Huang, Yong; Kou, Xin; Duan, Yu-Lai; Ding, Fei-Fei; Yin, Yi-Fan; Wang, Wei; Yang, Ying; Dalton transactions (Cambridge, England : 2003) 47 (2018) 8121–8133; doi:10.1039/c8dt00888d

data_7046258
_publ_section_title
;
 Magnesium and zinc complexes bearing NNO-tridentate ketiminate ligands:
 synthesis, structures and catalysis in the ring-opening polymerization of
 lactides.
;
_journal_issue                   24
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8121
_journal_page_last               8133
_journal_paper_doi               10.1039/c8dt00888d
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C42 H46 N8 O2 Zn'
_chemical_formula_sum            'C42 H46 N8 O2 Zn'
_chemical_formula_weight         760.24
_space_group_crystal_system      monoclinic
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_space_group_name_H-M_alt        'C 1 c 1'
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-04-16 deposited with the CCDC.
2018-05-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 117.1240(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.6751(16)
_cell_length_b                   10.1156(8)
_cell_length_c                   21.2181(17)
_cell_measurement_reflns_used    4742
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.894
_cell_measurement_theta_min      2.325
_cell_volume                     3758.5(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0239
_diffrn_reflns_av_unetI/netI     0.0366
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            9573
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.047
_diffrn_reflns_theta_max         25.047
_diffrn_reflns_theta_min         2.325
_exptl_absorpt_coefficient_mu    0.702
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.717866
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick (1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.344
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.283
_refine_diff_density_min         -0.226
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.615(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     479
_refine_ls_number_reflns         5824
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0428
_refine_ls_R_factor_gt           0.0356
_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^)+(0.0300P)^2^+3.6000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0777
_refine_ls_wR_factor_ref         0.0801
_reflns_Friedel_coverage         0.998
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                5141
_reflns_number_total             5824
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt00888d2.cif
_cod_data_source_block           hy31m
_cod_depositor_comments
'Adding full bibliography for 7046254--7046259.cif.'
_cod_database_code               7046258
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              15422