Titanium tert-Butoxyimido Compounds
Andrew D. Schwarz; Ainara Nova; Eric Clot; Philip Mountford; Inorganic Chemistry 50 (2011) 12155–12171; doi:10.1021/ic201896q

data_4327041
_publ_contact_author
;
 Prof P. Mountford           
 Chemistry Research Laboratory
 Mansfield Road
 Oxford
 OX1 3TA
 UK
;
_publ_contact_author_email       Philip.Mountford@chem.ox.ac.uk
_publ_contact_author_fax         '+44 1865 285141'
_publ_contact_author_phone       '+44 1865 285140'
_publ_section_title
;
 Titanium tert-Butoxyimido Compounds
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              12155
_journal_page_last               12171
_journal_paper_doi               10.1021/ic201896q
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C25 H46 N6 O1 Si2 Ti1'
_chemical_formula_sum            'C25 H46 N6 O Si2 Ti'
_chemical_formula_weight         550.75
_chemical_name_systematic
;
 Ti(N2NMe)(NOtBu)(Bipy)
;
_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
_cell_angle_alpha                90
_cell_angle_beta                 90.7653(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.15910(10)
_cell_length_b                   15.5605(2)
_cell_length_c                   17.3222(2)
_cell_measurement_reflns_used    6729
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     3007.58(6)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.036
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12185
_diffrn_reflns_theta_full        26.105
_diffrn_reflns_theta_max         27.479
_diffrn_reflns_theta_min         5.098
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.392
_exptl_absorpt_correction_T_max  0.89
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.216
_exptl_crystal_description       prism
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.300
_refine_diff_density_max         0.93
_refine_diff_density_min         -0.34
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.1270
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         4324
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0868
_refine_ls_R_factor_gt           0.0510
_refine_ls_shift/su_max          0.0002575
_refine_ls_shift/su_mean         0.0001034
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 0.902 1.10 0.875 0.418 0.209 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0817
_refine_ls_wR_factor_gt          0.0508
_refine_ls_wR_factor_ref         0.0476
_reflns_limit_h_max              14
_reflns_limit_h_min              -14
_reflns_limit_k_max              20
_reflns_limit_k_min              0
_reflns_limit_l_max              22
_reflns_limit_l_min              0
_reflns_number_gt                4705
_reflns_number_total             6846
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   1.89
_oxford_diffrn_Wilson_scale      23.71
_oxford_refine_ls_r_factor_ref   0.0464
_oxford_refine_ls_scale          0.2060(3)
_oxford_reflns_number_all        6846
_oxford_reflns_threshold_expression_ref I>3.0\s(I)
_cod_data_source_file            ic201896q_si_002_09.cif
_cod_data_source_block           COMPOUND_8
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_original_formula_sum        'C25 H46 N6 O1 Si2 Ti1'
_cod_database_code               4327041