Aluminium alkyl complexes supported by [OSSO] type bisphenolato ligands: synthesis, characterization and living polymerization of rac-lactide.
Ma, Haiyan; Melillo, Gianluca; Oliva, Leone; Spaniol, Thomas P.; Englert, Ulli; Okuda, Jun; Dalton transactions (Cambridge, England : 2003)  (2005) 721–727; doi:10.1039/b416875e

data_7008093
_publ_section_title
;
 Aluminium alkyl complexes supported by [OSSO] type bisphenolato
 ligands: synthesis, characterization and living polymerization of
 rac-lactide.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              721
_journal_page_last               727
_journal_paper_doi               10.1039/b416875e
_journal_year                    2005
_chemical_formula_sum            'C50 H70 Al2 O4 S4'
_chemical_formula_weight         917.33
_chemical_name_systematic
;
?
;
_space_group_IT_number           56
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.7048(17)
_cell_length_b                   16.380(3)
_cell_length_c                   28.722(5)
_cell_measurement_reflns_used    50262
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.32
_cell_measurement_theta_min      1.89
_cell_volume                     5036.2(15)
_computing_cell_refinement       SMART
_computing_data_collection       SMART
_computing_data_reduction        'SAINT, SADABS'
_computing_molecular_graphics    'Ortep-3 for Windows, Farrugia, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
'Bruker AXS diffractometer with CCD area detector'
_diffrn_measurement_method       \w-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  0.0333
_diffrn_reflns_av_sigmaI/netI    0.0196
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            50262
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    0.265
_exptl_absorpt_correction_T_max  0.9248
_exptl_absorpt_correction_T_min  0.8573
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker area detector absorption detection'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.210
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.56
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.504
_refine_diff_density_min         -0.241
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         6270
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0410
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0611P)^2^+2.2698P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1057
_refine_ls_wR_factor_ref         0.1094
_reflns_number_gt                5520
_reflns_number_total             6270
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b416875e.txt
_cod_data_source_block           gm1
_cod_original_cell_volume        5036.2(14)
_cod_original_sg_symbol_H-M      Pccn
_cod_database_code               7008093