Synthesis and Structural Characterization of a Novel Family of Titanium Complexes Bearing a Tridentate Bis-phenolate-N-heterocyclic Carbene Dianionic Ligand and Their Use in the Controlled ROP ofrac-Lactide
Romain, Charles; Brelot, Lydia; Bellemin-Laponnaz, Stéphane; Dagorne, Samuel; Organometallics 29 (2010) 1191–; doi:10.1021/om901084n

data_4067701
_publ_section_title
;
 Synthesis and Structural Characterization of a Novel Family of Titanium
 Complexes Bearing a Tridentate Bis-phenolate-N-heterocyclic Carbene
 Dianionic Ligand and Their Use in the Controlled ROP ofrac-Lactide
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1191
_journal_paper_doi               10.1021/om901084n
_journal_volume                  29
_journal_year                    2010
_chemical_formula_moiety         'C38 H59 Cl N2 O4 Ti'
_chemical_formula_sum            'C38 H59 Cl N2 O4 Ti'
_chemical_formula_weight         691.22
_chemical_name_systematic
;
 ?
;
_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                 98.8160(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.0186(6)
_cell_length_b                   16.1746(7)
_cell_length_c                   17.1108(8)
_cell_measurement_reflns_used    9892
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.36
_cell_measurement_theta_min      2.62
_cell_volume                     3834.0(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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0397
_diffrn_reflns_av_sigmaI/netI    0.0404
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            34326
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         1.74
_exptl_absorpt_coefficient_mu    0.332
_exptl_absorpt_correction_T_max  0.9366
_exptl_absorpt_correction_T_min  0.9070
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.198
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1488
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         2.230
_refine_diff_density_min         -1.417
_refine_diff_density_rms         0.080
_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     417
_refine_ls_number_reflns         8713
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0952
_refine_ls_R_factor_gt           0.0645
_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^)+(0.0701P)^2^+7.8192P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1561
_refine_ls_wR_factor_ref         0.1757
_reflns_number_gt                6303
_reflns_number_total             8713
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            om901084n_si_002.cif
_cod_data_source_block           rwcr100127_01
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     '-P 2ybc  '
_cod_original_sg_symbol_H-M      'P 21/c  '
_cod_database_code               4067701