Lactide polymerization catalyzed by Mg and Zn diketiminate complexes with flexible ligand frameworks.
Whitehorne, Todd J. J.; Vabre, Boris; Schaper, Frank; Dalton transactions (Cambridge, England : 2003) 43 (2014) 6339–6352; doi:10.1039/c3dt53278j

data_7030038
_publ_section_title
;
 Lactide polymerization catalyzed by Mg and Zn diketiminate complexes with
 flexible ligand frameworks.
;
_journal_issue                   17
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6339
_journal_page_last               6352
_journal_paper_doi               10.1039/c3dt53278j
_journal_volume                  43
_journal_year                    2014
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_moiety
'2(C82 H68 Mg2 N4 O2), 2(C H2 Cl2), C H2 Cl2, C H2 Cl2, C H2, Cl,'
_chemical_formula_sum            'C84.5 H73 Cl5 Mg2 N4 O2'
_chemical_formula_weight         1402.33
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_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-2013
_cell_angle_alpha                72.642(2)
_cell_angle_beta                 73.431(2)
_cell_angle_gamma                67.467(2)
_cell_formula_units_Z            2
_cell_length_a                   14.4200(5)
_cell_length_b                   16.6394(6)
_cell_length_c                   17.0800(6)
_cell_measurement_reflns_used    9923
_cell_measurement_temperature    100
_cell_measurement_theta_max      72.23
_cell_measurement_theta_min      2.76
_cell_volume                     3544.4(2)
_computing_cell_refinement       'SAINT V7.68A(Bruker AXS, 2009)'
_computing_data_collection       'APEX2  (Bruker AXS, 2009)'
_computing_data_reduction        'SAINT V7.68A(Bruker AXS, 2009)'
_computing_molecular_graphics    'SHELXTL (Bruker AXS, 2003)'
_computing_publication_material  'UdMX (Maris, 2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  'Bruker Smart 6000'
_diffrn_measurement_method       \w
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.039
_diffrn_reflns_av_unetI/netI     0.0354
_diffrn_reflns_Laue_measured_fraction_full 0.978
_diffrn_reflns_Laue_measured_fraction_max 0.959
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            47715
_diffrn_reflns_point_group_measured_fraction_full 0.978
_diffrn_reflns_point_group_measured_fraction_max 0.959
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.697
_diffrn_reflns_theta_min         2.763
_diffrn_source                   'Rotating Anode'
_exptl_absorpt_coefficient_mu    2.447
_exptl_absorpt_correction_T_max  0.7638
_exptl_absorpt_correction_T_min  0.5971
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_description       block
_exptl_crystal_F_000             1466
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.11
_refine_ls_extinction_coef       0.00129(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     943
_refine_ls_number_reflns         13541
_refine_ls_number_restraints     67
_refine_ls_restrained_S_all      1.113
_refine_ls_R_factor_all          0.0616
_refine_ls_R_factor_gt           0.0491
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0882P)^2^]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1384
_refine_ls_wR_factor_ref         0.1468
_reflns_Friedel_coverage         0.000
_reflns_number_gt                10363
_reflns_number_total             13541
_cod_data_source_file            c3dt53278j2.cif
_cod_data_source_block           TODD20
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C84.50 H73 Cl5 Mg2 N4 O2'
_cod_database_code               7030038