Nacnac(Bn)MgOtBu: a diketiminate-based catalyst for the polymerisation of rac-lactide with slight isotactic preference.
Drouin, Frédéric; Whitehorne, Todd J. J.; Schaper, Frank; Dalton transactions (Cambridge, England : 2003) 40 (2011) 1396–1400; doi:10.1039/c0dt01294g

data_7014938
_publ_section_title
;
 Nacnac(Bn)MgOtBu: a diketiminate-based catalyst for the polymerisation
 of rac-lactide with slight isotactic preference.
;
_journal_issue                   6
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1396
_journal_page_last               1400
_journal_paper_doi               10.1039/c0dt01294g
_journal_volume                  40
_journal_year                    2011
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_moiety         'C46 H60 Mg2 N4 O2'
_chemical_formula_sum            'C46 H60 Mg2 N4 O2'
_chemical_formula_weight         749.60
_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
_cell_angle_alpha                69.2650(10)
_cell_angle_beta                 77.0850(10)
_cell_angle_gamma                64.6290(10)
_cell_formula_units_Z            1
_cell_length_a                   10.0643(2)
_cell_length_b                   10.7726(2)
_cell_length_c                   11.8549(2)
_cell_measurement_reflns_used    6226
_cell_measurement_temperature    150
_cell_measurement_theta_max      72.11
_cell_measurement_theta_min      4.00
_cell_volume                     1082.18(4)
_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 v6.12 (Bruker AXS, 2001)'
_computing_publication_material  'UdMX (Maris, 2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.960
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device_type  'Bruker Smart 6000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'Montel 200 optics'
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.080
_diffrn_reflns_av_sigmaI/netI    0.0517
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14308
_diffrn_reflns_theta_full        72.57
_diffrn_reflns_theta_max         72.57
_diffrn_reflns_theta_min         4.00
_exptl_absorpt_coefficient_mu    0.803
_exptl_absorpt_correction_T_max  0.8794
_exptl_absorpt_correction_T_min  0.7365
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.150
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             404
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.385
_refine_diff_density_min         -0.342
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     246
_refine_ls_number_reflns         4129
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0568
_refine_ls_R_factor_gt           0.0498
_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^)+(0.0941P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1386
_refine_ls_wR_factor_ref         0.1435
_reflns_number_gt                3431
_reflns_number_total             4129
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            C0DT01294G.TXT
_cod_data_source_block           toddw8
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius 
;
_cod_original_cell_volume        1082.18(3)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7014938