TiNR vs Ti−R′ Functional Group Selectivity in Titanium Imido Alkyl Cations from an Experimental Perspective
Bolton, Paul D.; Feliz, Marta; Cowley, Andrew R.; Clot, Eric; Mountford, Philip; Organometallics 27 (2008) 6096–; doi:10.1021/om800709f

data_4072258
_publ_section_title
;
 Ti&#xE5FB;NR vs Ti&#x2212;R&#x2032; Functional Group Selectivity in
 Titanium Imido Alkyl Cations from an Experimental Perspective
;
_journal_issue                   23
_journal_name_full               Organometallics
_journal_page_first              6096
_journal_paper_doi               10.1021/om800709f
_journal_volume                  27
_journal_year                    2008
_chemical_compound_source
;
synthesis as described
;
_chemical_formula_moiety         ' C24 H55 N6 Si Ti, C24 B F20 '
_chemical_formula_sum            'C48 H55 B F20 N6 Si Ti'
_chemical_formula_weight         1182.76
_chemical_name_systematic
; 
[Ti(NtBu)(Me3[9]aneN3){Me3SiCH2C(NiPr)2}][BArF4]
;
_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
_cell_angle_alpha                75.5723(5)
_cell_angle_beta                 80.1952(5)
_cell_angle_gamma                86.9238(5)
_cell_formula_units_Z            2
_cell_length_a                   11.9619(2)
_cell_length_b                   12.7619(2)
_cell_length_c                   17.9840(2)
_cell_measurement_reflns_used    53966
_cell_measurement_temperature    150
_cell_measurement_theta_max      28
_cell_measurement_theta_min      5
_cell_volume                     2619.78(7)
_computing_cell_refinement
; 
KappaCCD software 'DENZO' (Otwinowski & Minor, 1996) 
;
_computing_data_collection
; 
KappaCCD software 'Collect' (Nonius, 2000) 
;
_computing_data_reduction
; 
KappaCCD software 'DENZO' (Otwinowski & Minor, 1996) 
;
_computing_publication_material
; 
CRYSTALS (Watkin et al, 2001) 
;
_computing_structure_refinement
; 
CRYSTALS (Watkin et al, 2001) 
;
_computing_structure_solution    'SIR92 (Giacovazzo et al, 1992)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
; 
Nonius KappaCCD 
;
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.049
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            53966
_diffrn_reflns_theta_full        27.557
_diffrn_reflns_theta_max         27.557
_diffrn_reflns_theta_min         5.132
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.299
_exptl_absorpt_correction_T_max  0.95
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
 Denzo/Scalepack (Otwinowski & Minor, 1996) 
;
_exptl_crystal_colour            ' pink '
_exptl_crystal_density_diffrn    1.499
_exptl_crystal_description       ' fragment '
_exptl_crystal_F_000             1212
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.48
_refine_diff_density_min         -0.48
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0982
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     687
_refine_ls_number_reflns         7976
_refine_ls_number_restraints     48
_refine_ls_R_factor_all          0.0652
_refine_ls_R_factor_gt           0.0402
_refine_ls_shift/su_max          0.031229
_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: 
 0.663 0.427 0.335 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0703
_refine_ls_wR_factor_gt          0.0476
_refine_ls_wR_factor_ref         0.0476
_reflns_limit_h_max              15
_reflns_limit_h_min              -15
_reflns_limit_k_max              16
_reflns_limit_k_min              -15
_reflns_limit_l_max              23
_reflns_limit_l_min              0
_reflns_number_gt                7976
_reflns_number_total             11970
_reflns_threshold_expression     I>3.00u(I)
_cod_data_source_file            om800709f_si_001.cif
_cod_data_source_block           compound_14-BArF4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_atom_site_refinement_disorder_assembly' tag replaced with
'_atom_site_disorder_assembly'.

'_atom_site_refinement_disorder_group'
tag replaced with '_atom_site_disorder_group'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_H-M      'P -1 '
_cod_original_formula_sum        ' C48 H55 B1 F20 N6 Si Ti '
_cod_database_code               4072258