Site selectivity and reversibility in the reactions of titanium hydrazides with Si-H, Si-X, C-X and H(+) reagents: Ti[double bond, length as m-dash]N(α) 1,2-silane addition, N(β) alkylation, N(α) protonation and σ-bond metathesis.
Tiong, Pei Jen; Nova, Ainara; Schwarz, Andrew D.; Selby, Jonathan D.; Clot, Eric; Mountford, Philip; Dalton transactions (Cambridge, England : 2003) 41 (2012) 2277–2288; doi:10.1039/c2dt12359b

data_7018075
_publ_section_title
;
 Site selectivity and reversibility in the reactions of titanium
 hydrazides with Si-H, Si-X, C-X and H(+) reagents: Ti[double bond, length
 as m-dash]N(\a) 1,2-silane addition, N(\b) alkylation, N(\a) protonation
 and \s-bond metathesis.
;
_journal_issue                   8
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2277
_journal_page_last               2288
_journal_paper_doi               10.1039/c2dt12359b
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C28 H44 F6 N4 Si1 Ti1'
_chemical_formula_sum            'C28 H44 F6 N4 Si Ti'
_chemical_formula_weight         626.66
_chemical_name_systematic
;
Cp*Ti{MeC(NiPr)2}(H){N(NMe2)SiH2ArF}
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 100.2706(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.65520(10)
_cell_length_b                   24.6871(3)
_cell_length_c                   15.1275(2)
_cell_measurement_reflns_used    7247
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     3180.53(7)
_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    'USER DEFINED STRUCTURE SOLUTION'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       Area
_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  0.031
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            12292
_diffrn_reflns_theta_full        27.478
_diffrn_reflns_theta_max         27.478
_diffrn_reflns_theta_min         5.111
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.366
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.99
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.309
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.87
_refine_diff_density_min         -0.52
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1203
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     427
_refine_ls_number_reflns         4764
_refine_ls_number_restraints     120
_refine_ls_R_factor_all          0.0893
_refine_ls_R_factor_gt           0.0594
_refine_ls_shift/su_max          0.0031504
_refine_ls_shift/su_mean         0.0001831
_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:
0.692 0.439 0.389
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0883
_refine_ls_wR_factor_gt          0.0656
_refine_ls_wR_factor_ref         0.0618
_reflns_limit_h_max              11
_reflns_limit_h_min              -11
_reflns_limit_k_max              32
_reflns_limit_k_min              0
_reflns_limit_l_max              19
_reflns_limit_l_min              0
_reflns_number_gt                5237
_reflns_number_total             7235
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   1.87
_oxford_diffrn_Wilson_scale      19.63
_oxford_refine_ls_r_factor_ref   0.0528
_oxford_refine_ls_scale          0.2485(6)
_oxford_reflns_number_all        7235
_oxford_reflns_threshold_expression_ref I>3.0\s(I)
_cod_data_source_file            c2dt12359b.txt
_cod_data_source_block           compound_5
_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_H-M      'P 1 21/n 1 '
_cod_original_formula_sum        'C28 H44 F6 N4 Si1 Ti1'
_cod_database_code               7018075