Steric and Chelating Ring Concerns on the L-Lactide Polymerization by Asymmetric β-Diketiminato Zinc Complexes
Chuang, Wan-Jung; Chen, Hsing-Yin; Chen, Wei-Ting; Chang, Heng Yi; Chiang, Michael, Y.; Hsu, Sodio C.N.; Chen, Hsuan-Ying; RSC Adv.  (2016) –; doi:10.1039/C6RA07453G

data_7224858
_publ_section_title
;
 Steric and Chelating Ring Concerns on the L-Lactide Polymerization by
 Asymmetric \b-Diketiminato Zinc Complexes
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C6RA07453G
_journal_year                    2016
_chemical_formula_moiety         'C50 H70 N6 Zn2'
_chemical_formula_sum            'C50 H70 N6 Zn2'
_chemical_formula_weight         885.86
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-11-03 deposited with the CCDC.
2016-04-05 downloaded from the CCDC.
;
_cell_angle_alpha                76.206(3)
_cell_angle_beta                 88.607(3)
_cell_angle_gamma                63.321(3)
_cell_formula_units_Z            1
_cell_length_a                   9.6519(7)
_cell_length_b                   9.7012(7)
_cell_length_c                   14.3904(11)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1163.94(15)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'NONIUS KappaCCD'
_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  0.0188
_diffrn_reflns_av_sigmaI/netI    0.0256
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9718
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.37
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.070
_exptl_absorpt_correction_T_max  0.7833
_exptl_absorpt_correction_T_min  0.7058
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.264
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.653
_refine_diff_density_min         -0.606
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         4053
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0339
_refine_ls_R_factor_gt           0.0310
_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^)+(0.0428P)^2^+1.0527P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0824
_refine_ls_wR_factor_ref         0.0842
_reflns_number_gt                3762
_reflns_number_total             4053
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra07453g2.cif
_cod_data_source_block           3
_cod_database_code               7224858