Preparation and characterization of bisphenolato magnesium derivatives: an efficient catalyst for the ring-opening polymerization of ε-caprolactone and L-lactide
Shen, Min-Yi; Peng, Ya-Liu; Hung, Wen-Chou; Lin, Chu-Chieh; Dalton Transactions  (2009) 9906–9913; doi:10.1039/b912443h

data_7002751
_publ_section_title
;
 Preparation and characterization of bisphenolato magnesium
 derivatives: an efficient catalyst for the ring-opening polymerization
 of \e-caprolactone and L-lactide
;
_journal_issue                   44
_journal_name_full               'Dalton Transactions'
_journal_page_first              9906
_journal_page_last               9913
_journal_paper_doi               10.1039/b912443h
_journal_year                    2009
_chemical_formula_moiety         'C76 H108 Mg2 O6, 2(C7 H8)'
_chemical_formula_sum            'C90 H124 Mg2 O6'
_chemical_formula_weight         1350.51
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 100.342(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.354(3)
_cell_length_b                   14.909(3)
_cell_length_c                   30.879(5)
_cell_measurement_reflns_used    5860
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.907
_cell_measurement_theta_min      2.256
_cell_volume                     8312(3)
_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 0.983
_diffrn_measured_fraction_theta_max 0.983
_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  0.0683
_diffrn_reflns_av_sigmaI/netI    0.0660
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            21853
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.987
_exptl_absorpt_correction_T_min  0.933
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick (1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.079
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelpiped
_exptl_crystal_F_000             2944
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.338
_refine_diff_density_min         -0.272
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.152
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     430
_refine_ls_number_reflns         8057
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.153
_refine_ls_R_factor_all          0.1250
_refine_ls_R_factor_gt           0.0755
_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          0.1839
_refine_ls_wR_factor_ref         0.2081
_reflns_number_gt                4816
_reflns_number_total             8057
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b912443h.txt
_cod_data_source_block           mys1m
_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        8313(2)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7002751