Lithium complexes supported by amine bis-phenolate ligands as efficient catalysts for ring-opening polymerization of L-lactide.
Huang, Chi-An; Chen, Chi-Tien; Dalton transactions (Cambridge, England : 2003)  (2007) 5561–5566; doi:10.1039/b711100b

data_7006243
_publ_section_title
;
 Lithium complexes supported by amine bis-phenolate ligands as
 efficient catalysts for ring-opening polymerization of L-lactide.
;
_journal_issue                   47
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5561
_journal_page_last               5566
_journal_paper_doi               10.1039/b711100b
_journal_year                    2007
_chemical_formula_sum            'C68 H108 Li4 N4 O4'
_chemical_formula_weight         1073.34
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 95.376(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.9896(7)
_cell_length_b                   32.351(2)
_cell_length_c                   19.9026(14)
_cell_measurement_reflns_used    4953
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      21.309
_cell_measurement_theta_min      2.247
_cell_volume                     7044.7(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0780
_diffrn_reflns_av_sigmaI/netI    0.1032
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -39
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            40121
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         1.96
_exptl_absorpt_coefficient_mu    0.061
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.412
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.012
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelpiped
_exptl_crystal_F_000             2352
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.484
_refine_diff_density_min         -0.294
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.916
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     721
_refine_ls_number_reflns         13822
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.916
_refine_ls_R_factor_all          0.1639
_refine_ls_R_factor_gt           0.0649
_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^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1635
_refine_ls_wR_factor_ref         0.2059
_reflns_number_gt                5672
_reflns_number_total             13822
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b711100b.txt
_cod_data_source_block           compound_1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        7044.8(8)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7006243