Synthesis of binuclear phenoxyimino organoaluminum complexes and their use as the catalyst precursors for efficient ring-opening polymerisation of ε-caprolactone.
Han, Hong-Ling; Liu, Yan; Liu, Jing-Yu; Nomura, Kotohiro; Li, Yue-Sheng; Dalton transactions (Cambridge, England : 2003) 42 (2013) 12346–12353; doi:10.1039/c3dt50264c

data_7022922
_publ_section_title
;
 Synthesis of binuclear phenoxyimino organoaluminum complexes and their
 use as the catalyst precursors for efficient ring-opening polymerisation
 of \e-caprolactone.
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12346
_journal_page_last               12353
_journal_paper_doi               10.1039/c3dt50264c
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C27 H40 Al2 Cl2 N2 O2'
_chemical_formula_weight         549.47
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 121.377(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.697(2)
_cell_length_b                   12.5736(14)
_cell_length_c                   16.2599(19)
_cell_measurement_temperature    185(2)
_cell_volume                     3089.0(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      185(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0297
_diffrn_reflns_av_sigmaI/netI    0.0384
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            8379
_diffrn_reflns_theta_full        26.22
_diffrn_reflns_theta_max         26.22
_diffrn_reflns_theta_min         2.11
_exptl_absorpt_coefficient_mu    0.292
_exptl_absorpt_correction_T_max  0.9466
_exptl_absorpt_correction_T_min  0.9124
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.182
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.285
_refine_diff_density_min         -0.312
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         3100
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0634
_refine_ls_R_factor_gt           0.0421
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0418P)^2^+2.7273P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0970
_refine_ls_wR_factor_ref         0.1087
_reflns_number_gt                2278
_reflns_number_total             3100
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt50264c.txt
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7022922