DiscreteO-Lactate and β-Alkoxybutyrate Aluminum Pyridine‒Bis(naphtholate) Complexes: Models for Mechanistic Investigations in the Ring-Opening Polymerization of Lactides and β-Lactones
Klitzke, Joice S.; Roisnel, Thierry; Kirillov, Evgeny; Casagrande, Osvaldo de L.; Carpentier, Jean-François; Organometallics 33 (2014) 5693–; doi:10.1021/om401214q

data_4082851
_publ_section_title
;
 DiscreteO-Lactate and \b-Alkoxybutyrate Aluminum
 Pyridine--Bis(naphtholate) Complexes: Models for Mechanistic
 Investigations in the Ring-Opening Polymerization of Lactides and
 \b-Lactones
;
_journal_issue                   20
_journal_name_full               Organometallics
_journal_page_first              5693
_journal_paper_doi               10.1021/om401214q
_journal_volume                  33
_journal_year                    2014
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C62 H46 Al N O2 Si2'
_chemical_formula_sum            'C62 H46 Al N O2 Si2'
_chemical_formula_weight         920.16
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2010-10-26T10:06:00-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 92.8790(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3014(2)
_cell_length_b                   18.2532(3)
_cell_length_c                   27.8300(5)
_cell_measurement_reflns_used    7145
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.06
_cell_measurement_theta_min      2.67
_cell_measurement_wavelength     0.71073
_cell_volume                     5733.71(17)
_computing_cell_refinement       'Bruker SMART (Bruker, 2002)'
_computing_data_collection       'Bruker SAINT (Bruker, 2002)'
_computing_data_reduction        'Bruker SAINT (Bruker, 2002)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material
;
           WinGX publication routines (Farrugia, 1999),
           CRYSCAL (T. Roisnel, local program)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999))'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0377
_diffrn_reflns_av_unetI/netI     0.0436
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            46721
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.892
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.066
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1928
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.09
_platon_squeeze_details
;
;
_refine_diff_density_max         0.498
_refine_diff_density_min         -0.28
_refine_diff_density_rms         0.07
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     614
_refine_ls_number_reflns         12982
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_all          0.0727
_refine_ls_R_factor_gt           0.0534
_refine_ls_shift/su_max          0.014
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1026P)^2^+0.5245P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1595
_refine_ls_wR_factor_ref         0.1704
_reflns_number_gt                9634
_reflns_number_total             12982
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om401214q_si_001.cif
_cod_data_source_block           complex2a
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4082851