ChiralN,N,O-Scorpionate Zinc Alkyls as Effective and Stereoselective Initiators for the Living ROP of Lactides
Otero, Antonio; Fernández-Baeza, Juan; Sánchez-Barba, Luis F.; Tejeda, Juan; Honrado, Manuel; Garcés, Andrés; Lara-Sánchez, Agustín; Rodríguez, Ana M.; Organometallics 31 (2012) 4191–; doi:10.1021/om300146n

data_4078427
_publ_section_title
;
 ChiralN,N,O-Scorpionate Zinc Alkyls as Effective and Stereoselective
 Initiators for the Living ROP of Lactides
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              4191
_journal_paper_doi               10.1021/om300146n
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C17 H28 N4 O Zn'
_chemical_formula_weight         369.80
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 103.490(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5485(3)
_cell_length_b                   11.1502(3)
_cell_length_c                   14.8159(4)
_cell_measurement_reflns_used    3619
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      24.492
_cell_measurement_theta_min      2.726
_cell_volume                     1855.18(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX'
_computing_data_reduction        'Bruker SAINT, SADABS, XPREP'
_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      220(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCd area detector'
_diffrn_measurement_method       'omega and phi 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  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0454
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            20677
_diffrn_reflns_theta_full        30.56
_diffrn_reflns_theta_max         30.56
_diffrn_reflns_theta_min         2.73
_exptl_absorpt_coefficient_mu    1.333
_exptl_absorpt_correction_T_max  0.8782
_exptl_absorpt_correction_T_min  0.7763
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.324
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     216
_refine_ls_number_reflns         5684
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0598
_refine_ls_R_factor_gt           0.0382
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0395P)^2^+0.1904P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0840
_refine_ls_wR_factor_ref         0.0924
_reflns_number_gt                4138
_reflns_number_total             5684
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300146n_si_001.cif
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4078427