Multinuclear alkylaluminium macrocyclic Schiff base complexes: influence of procatalyst structure on the ring opening polymerisation of epsilon-caprolactone.
Arbaoui, Abdessamad; Redshaw, Carl; Hughes, David L; Chemical communications (Cambridge, England)  (2008) 4717–4719; doi:10.1039/b810417d

data_7103401
_publ_section_title
;
 Multinuclear alkylaluminium macrocyclic Schiff base complexes:
 influence of procatalyst structure on the ring opening polymerisation
 of epsilon-caprolactone.
;
_journal_issue                   39
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              4717
_journal_page_last               4719
_journal_paper_doi               10.1039/b810417d
_journal_year                    2008
_chemical_formula_moiety         'C66 H86 Al4 N6 O2'
_chemical_formula_structural     Al4-complex
_chemical_formula_sum            'C66 H86 Al4 N6 O2'
_chemical_formula_weight         1103.33
_chemical_name_common            'Compound 4'
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'SHELXL-97 and CrysAlis RED'
_cell_angle_alpha                90.00
_cell_angle_beta                 107.436(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.7137(6)
_cell_length_b                   13.6334(3)
_cell_length_c                   23.6742(7)
_cell_measurement_temperature    140(1)
_cell_volume                     6378.4(3)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd., Version 1.171.29.9
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd., Version 1.171.29.9
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd., Version 1.171.29.9
;
_computing_molecular_graphics    'ORTEP (Johnson, 1971)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997b)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997b)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      140(1)
_diffrn_detector_area_resol_mean 16.0050
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur 3/CCD'
_diffrn_measurement_method       'Thin slice \f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           Mo-K\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1144
_diffrn_reflns_av_sigmaI/netI    0.1208
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            65005
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.43
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_T_max  1.014
_exptl_absorpt_correction_T_min  0.983
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd., Version 1.171.29.9
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.149
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular block'
_exptl_crystal_F_000             2368
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.301
_refine_diff_density_min         -0.258
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.909
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     705
_refine_ls_number_reflns         11208
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.909
_refine_ls_R_factor_all          0.1278
_refine_ls_R_factor_gt           0.0526
_refine_ls_shift/su_max          0.071
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0437P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0896
_refine_ls_wR_factor_ref         0.1061
_reflns_number_gt                6299
_reflns_number_total             11208
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            b810417d.txt
_cod_data_source_block           abdea17
_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_sg_symbol_H-M      'P 2(1)/n'
_cod_database_code               7103401