Zirconium and hafnium complexes bearing pyrrolidine derived salalen-type {ONNO} ligands and their application for ring-opening polymerization of lactides
Duan, Yu-Lai; Hu, Zhi-Jian; Yang, Bo-Qun; Ding, Fei-Fei; Wang, Wei; Huang, Yong; Yang, Ying; Dalton Trans.  (2017) –; doi:10.1039/C7DT02113E

data_7043705
_publ_section_title
;
 Zirconium and hafnium complexes bearing pyrrolidine derived salalen-type
 {ONNO} ligands and their application for ring-opening polymerization of
 lactides
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT02113E
_journal_year                    2017
_chemical_absolute_configuration s
_chemical_formula_moiety         'C40 H60 N4 O4 Zr'
_chemical_formula_sum            'C40 H60 N4 O4 Zr'
_chemical_formula_weight         752.14
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-03-22 deposited with the CCDC.
2017-07-13 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 99.103(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.0439(3)
_cell_length_b                   10.3438(3)
_cell_length_c                   17.7240(5)
_cell_measurement_reflns_used    2613
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.8500
_cell_measurement_theta_min      3.9340
_cell_volume                     1999.22(10)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_detector_area_resol_mean 16.0733
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Eos'
_diffrn_measurement_method       '\w 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  0.0343
_diffrn_reflns_av_sigmaI/netI    0.0658
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            7417
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.49
_exptl_absorpt_coefficient_mu    0.318
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.98072
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.249
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.390
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     442
_refine_ls_number_reflns         5073
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0466
_refine_ls_R_factor_gt           0.0400
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0100P)^2^+1.4000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0712
_refine_ls_wR_factor_ref         0.0757
_reflns_number_gt                4628
_reflns_number_total             5073
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7dt02113e2.cif
_cod_data_source_block           zr-ipr
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/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 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_cell_volume        1999.21(9)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7043705