Metal and Ligand-Substituent Effects in the Immortal Polymerization ofrac-Lactide with Li, Na, and K Phenoxo-imine Complexes
García-Valle, Francisco M.; Estivill, Robert; Gallegos, Carlos; Cuenca, Tomás; Mosquera, Marta E. G.; Tabernero, Vanessa; Cano, Jesús; Organometallics 34 (2015) 477–; doi:10.1021/om501000b

data_4085301
_publ_section_title
;
 Metal and Ligand-Substituent Effects in the Immortal Polymerization
 ofrac-Lactide with Li, Na, and K Phenoxo-imine Complexes
;
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              477
_journal_paper_doi               10.1021/om501000b
_journal_volume                  34
_journal_year                    2015
_chemical_formula_moiety         'C50 H34 Li2 N2 O4.2 C7 H8'
_chemical_formula_sum            'C64 H50 Li2 N2 O4'
_chemical_formula_weight         924.94
_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                 111.53(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.949(6)
_cell_length_b                   10.441(3)
_cell_length_c                   19.846(6)
_cell_measurement_reflns_used    45
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      19.65
_cell_measurement_theta_min      2.87
_cell_volume                     3267.0(18)
_computing_cell_refinement
'Dirax/lsq (Duisenberg & Schreurs, 1989-2000)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction        'EvalCCD (Duisenberg & Schreurs 1990-2000)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       X=UH
_diffrn_orient_matrix_UB_11      0.01
_diffrn_orient_matrix_UB_12      0
_diffrn_orient_matrix_UB_13      0
_diffrn_orient_matrix_UB_21      0
_diffrn_orient_matrix_UB_22      0.01
_diffrn_orient_matrix_UB_23      0
_diffrn_orient_matrix_UB_31      0
_diffrn_orient_matrix_UB_32      0
_diffrn_orient_matrix_UB_33      0.01
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1292
_diffrn_reflns_av_sigmaI/netI    0.1370
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            71706
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.10
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.06
_exptl_absorpt_correction_T_max  1.454
_exptl_absorpt_correction_T_min  0.839
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 R.H. Blessing, Acta Cryst. (1995), A51, 33-38
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    0.940
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             972
_exptl_crystal_size_max          0.490
_exptl_crystal_size_mid          0.454
_exptl_crystal_size_min          0.408
_platon_squeeze_details
;
;
_refine_diff_density_max         0.630
_refine_diff_density_min         -0.257
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         5729
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.944
_refine_ls_R_factor_all          0.1834
_refine_ls_R_factor_gt           0.0983
_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^)+(0.1561P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2461
_refine_ls_wR_factor_ref         0.2803
_reflns_number_gt                2552
_reflns_number_total             5729
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om501000b_si_002.cif
_cod_data_source_block           1b2C7H8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/saulius/struct/COD-crude-data--automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2935 2014-11-11 08:27:57Z andrius 

 Adding full bibliography for 4085301--4085306.cif.
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4085301