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_7224859
_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         'C23 H31 N3 Zn'
_chemical_formula_sum            'C23 H31 N3 Zn'
_chemical_formula_weight         414.88
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                90.00
_cell_angle_beta                 97.421(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.6411(6)
_cell_length_b                   14.0394(7)
_cell_length_c                   14.2237(8)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     2107.1(2)
_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 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0337
_diffrn_reflns_av_sigmaI/netI    0.0379
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11629
_diffrn_reflns_theta_full        25.11
_diffrn_reflns_theta_max         25.11
_diffrn_reflns_theta_min         2.05
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.177
_exptl_absorpt_correction_T_max  0.9117
_exptl_absorpt_correction_T_min  0.8160
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             880
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.544
_refine_diff_density_min         -0.400
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         3726
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0493
_refine_ls_R_factor_gt           0.0374
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0519P)^2^+1.7309P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0982
_refine_ls_wR_factor_ref         0.1044
_reflns_number_gt                3044
_reflns_number_total             3726
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra07453g2.cif
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7224859