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_7008090
_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            'C25 H35 Al O2 S2'
_chemical_formula_weight         458.63
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                   8.8288(13)
_cell_length_b                   15.074(2)
_cell_length_c                   18.759(3)
_cell_measurement_reflns_used    29929
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      28.36
_cell_measurement_theta_min      1.73
_cell_volume                     2496.5(6)
_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      120(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0627
_diffrn_reflns_av_sigmaI/netI    0.0496
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            29929
_diffrn_reflns_theta_full        28.36
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         1.73
_exptl_absorpt_coefficient_mu    0.267
_exptl_absorpt_correction_T_max  0.9387
_exptl_absorpt_correction_T_min  0.8714
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker area detector absorption correction'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.220
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.055
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         6235
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0467
_refine_ls_R_factor_gt           0.0387
_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^)+(0.0481P)^2^+0.0498P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0894
_refine_ls_wR_factor_ref         0.0929
_reflns_number_gt                5525
_reflns_number_total             6235
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b416875e.txt
_cod_data_source_block           hm10
_cod_database_code               7008090