Stereoselective Synthesis of Biphenolate/Binaphtolate Titanate and Zirconate Alkoxide Species: Structural Characterization and Use in the Controlled ROP of Lactide
Laurine Azor; Corinne Bailly; Lydia Brelot; Marc Henry; Pierre Mobian; Samuel Dagorne; Inorganic Chemistry 51 (2012) 10876–10883; doi:10.1021/ic301352t

data_4330647
_publ_contact_author_address
;
Institut Le Bel, rue Blaise Pascal, 67000 STRASBOURG, FRANCE
;
_publ_contact_author_email       welter@unistra.fr
_publ_contact_author_fax         0383681232
_publ_contact_author_name
;
Richard Welter
;
_publ_contact_author_phone       0383681593
_publ_section_title
;
 Stereoselective Synthesis of Biphenolate/Binaphtolate Titanate and
 Zirconate Alkoxide Species: Structural Characterization and Use in the
 Controlled ROP of Lactide
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              10876
_journal_page_last               10883
_journal_paper_doi               10.1021/ic301352t
_journal_volume                  51
_journal_year                    2012
_chemical_formula_moiety         'C71 H55 Li O6 Ti, C H2 Cl2'
_chemical_formula_sum            'C72 H57 Cl2 Li O6 Ti'
_chemical_formula_weight         1143.92
_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                 106.882(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.9378(4)
_cell_length_b                   21.2271(7)
_cell_length_c                   23.9465(6)
_cell_measurement_reflns_used    9451
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.54
_cell_measurement_theta_min      2.29
_cell_volume                     6293.1(3)
_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      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0469
_diffrn_reflns_av_sigmaI/netI    0.0666
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            53547
_diffrn_reflns_theta_full        30.04
_diffrn_reflns_theta_max         30.04
_diffrn_reflns_theta_min         1.90
_exptl_absorpt_coefficient_mu    0.272
_exptl_absorpt_correction_T_max  0.9733
_exptl_absorpt_correction_T_min  0.8990
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_description       block
_exptl_crystal_F_000             2384
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_platon_squeeze_details
;
 The residual electron density was assigned to one molecule of the
 tetrahydrofuran solvent [136/4 = 34 e per asymmetric unit; one molecule
 of C4H8O would give 40e]. 
;
_refine_diff_density_max         1.147
_refine_diff_density_min         -0.878
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     723
_refine_ls_number_reflns         18348
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.1084
_refine_ls_R_factor_gt           0.0649
_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^)+(0.0995P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1681
_refine_ls_wR_factor_ref         0.1860
_reflns_number_gt                11253
_reflns_number_total             18348
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ic301352t_si_002_3.cif
_cod_data_source_block           rwla101108
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4330647