Dititanium Complexes of Preorganized Binucleating Bis(amidinates)
Michael J. McNevin; John R. Hagadorn; Inorganic Chemistry 43 (2004) 8547–8554; doi:10.1021/ic0488841

data_4312233
_publ_contact_author_address     '215 UCB, Boulder, CO, 80309-0215, USA'
_publ_contact_author_name        'John R. Hagadorn'
_publ_section_title
;
 Dititanium Complexes of Preorganized Binucleating Bis(amidinates)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              8547
_journal_page_last               8554
_journal_paper_doi               10.1021/ic0488841
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C40 H56 N4 O Ti2'
_chemical_formula_weight         704.63
_chemical_name_common            iPrLDBFTi2Cp2Me4
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.6997(10)
_cell_length_b                   12.8143(5)
_cell_length_c                   12.1194(5)
_cell_measurement_reflns_used    5030
_cell_measurement_temperature    143(2)
_cell_measurement_theta_max      26.4515
_cell_measurement_theta_min      2.2905
_cell_volume                     3835.9(3)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'SHELXTL, Bruker'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      143(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.1428
_diffrn_reflns_av_sigmaI/netI    0.0823
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            29725
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.451
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.230
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
absorption correction applied using SADABS (Blessing, R. H. Acta Crystallogr., 
Sect. A 1995, 51, 33-38)
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.220
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.733
_refine_diff_density_min         -0.446
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.956
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         4595
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.956
_refine_ls_R_factor_all          0.1003
_refine_ls_R_factor_gt           0.0522
_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^)+(0.0743P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1251
_refine_ls_wR_factor_ref         0.1438
_reflns_number_gt                2783
_reflns_number_total             4595
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0488841si20040813_063613_6.cif
_cod_data_source_block           compound_9
_cod_original_formula_sum        'C40 H56 N4 O1 Ti2'
_cod_database_code               4312233