Synthesis and X-ray structures of new titanium(IV) aryloxides and their exploitation for the ring opening polymerization of epsilon-caprolactone.
Davidson, Matthew G.; Jones, Matthew D.; Lunn, Matthew D.; Mahon, Mary F.; Inorganic chemistry 45 (2006) 2282–2287; doi:10.1021/ic051708n

data_4340229
_publ_section_title
;
 Synthesis and X-ray structures of new titanium(IV) aryloxides and their
 exploitation for the ring opening polymerization of epsilon-caprolactone.
;
_journal_issue                   5
_journal_name_full               'Inorganic chemistry'
_journal_page_first              2282
_journal_page_last               2287
_journal_paper_doi               10.1021/ic051708n
_journal_volume                  45
_journal_year                    2006
_chemical_formula_moiety         'C30 H52 O10 Ti2'
_chemical_formula_sum            'C30 H52 O10 Ti2'
_chemical_formula_weight         668.46
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                97.7370(10)
_cell_angle_beta                 108.173(2)
_cell_angle_gamma                102.296(2)
_cell_formula_units_Z            2
_cell_length_a                   10.8190(3)
_cell_length_b                   12.8070(4)
_cell_length_c                   13.7130(5)
_cell_measurement_reflns_used    10843
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      3.77
_cell_volume                     1722.01(10)
_computing_cell_refinement       'HKL Scalepack (Otwinski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction        'HKL Denzo & Scalepack (Otwinski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
; 
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. , 
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R. 
 (1999) J. Appl. Cryst. 32, 115-119.
;
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       CCD
_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  0.0625
_diffrn_reflns_av_sigmaI/netI    0.0820
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            10843
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.77
_exptl_absorpt_coefficient_mu    0.514
_exptl_absorpt_correction_T_max  0.9269
_exptl_absorpt_correction_T_min  0.8716
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.617
_refine_diff_density_min         -0.414
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     399
_refine_ls_number_reflns         5964
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0814
_refine_ls_R_factor_gt           0.0471
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0657P)^2^+0.3823P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1196
_refine_ls_wR_factor_ref         0.1344
_reflns_number_gt                4080
_reflns_number_total             5964
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic051708nsi20051004_093209.cif
_cod_data_source_block           1a
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4340229