Bimetallic aluminum alkyl complexes as highly active initiators for the polymerization of ε-caprolactone.
Li, Wenyi; Wu, Wenting; Wang, Yaorong; Yao, Yingming; Zhang, Yong; Shen, Qi; Dalton transactions (Cambridge, England : 2003) 40 (2011) 11378–11381; doi:10.1039/c1dt11380a

data_7017098
_publ_section_title
;
 Bimetallic aluminum alkyl complexes as highly active initiators for the
 polymerization of \e-caprolactone.
;
_journal_issue                   43
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11378
_journal_page_last               11381
_journal_paper_doi               10.1039/c1dt11380a
_journal_volume                  40
_journal_year                    2011
_chemical_formula_moiety         'C24 H33 Al N2 O2'
_chemical_formula_sum            'C24 H33 Al N2 O2'
_chemical_formula_weight         408.50
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 101.768(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.349(3)
_cell_length_b                   8.789(2)
_cell_length_c                   12.741(4)
_cell_measurement_reflns_used    5765
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.1
_cell_volume                     1134.5(5)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_publication_material  'CrystalStructure 3.7.0'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0203
_diffrn_reflns_av_sigmaI/netI    0.0415
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6588
_diffrn_reflns_theta_full        27.45
_diffrn_reflns_theta_max         27.45
_diffrn_reflns_theta_min         3.27
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.942
_exptl_absorpt_correction_T_min  0.659
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.196
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     268
_refine_ls_number_reflns         4427
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0520
_refine_ls_R_factor_gt           0.0407
_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^)+(0.0518P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0919
_refine_ls_wR_factor_ref         0.0991
_reflns_number_gt                3659
_reflns_number_total             4427
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1dt11380a.txt
_cod_data_source_block           complex1
_cod_original_cell_volume        1134.6(5)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7017098