Synthesis, structural characterization and reactivity of aluminium complexes supported by benzotriazole phenoxide ligands: air-stable alumoxane as an efficient catalyst for ring-opening polymerization of l-lactide.
Li, Chen-Yu; Tsai, Chen-Yen; Lin, Chia-Her; Ko, Bao-Tsan; Dalton transactions (Cambridge, England : 2003) 40 (2011) 1880–1887; doi:10.1039/c0dt01108h

data_7014737
_publ_section_title
;
 Synthesis, structural characterization and reactivity of aluminium
 complexes supported by benzotriazole phenoxide ligands: air-stable
 alumoxane as an efficient catalyst for ring-opening polymerization of
 l-lactide.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1880
_journal_page_last               1887
_journal_paper_doi               10.1039/c0dt01108h
_journal_volume                  40
_journal_year                    2011
_chemical_formula_moiety         'C120 H112 Al2 N12 O5, C7 H8, 0.5(C8)'
_chemical_formula_sum            'C131 H120 Al2 N12 O5'
_chemical_formula_weight         1996.35
_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                 112.629(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.7765(8)
_cell_length_b                   22.1620(8)
_cell_length_c                   24.9183(8)
_cell_measurement_reflns_used    9604
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.04
_cell_measurement_theta_min      2.42
_cell_volume                     11100.0(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0869
_diffrn_reflns_av_sigmaI/netI    0.1265
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            108206
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         28.51
_diffrn_reflns_theta_min         1.01
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.9844
_exptl_absorpt_correction_T_min  0.9574
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       columnar
_exptl_crystal_F_000             4224
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.316
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1351
_refine_ls_number_reflns         27858
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.1978
_refine_ls_R_factor_gt           0.0640
_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^)+(0.0550P)^2^+0.1258P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1157
_refine_ls_wR_factor_ref         0.1555
_reflns_number_gt                11320
_reflns_number_total             27858
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0DT01108H.TXT
_cod_data_source_block           yu4_0m
_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 1555 2011-01-17 13:19:09Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7014737