Synthesis and Ethylene Polymerization Capability of Metallocene-like Imido Titanium Dialkyl Compounds and Their Reactions with AliBu3
Bolton, Paul D.; Adams, Nico; Clot, Eric; Cowley, Andrew R.; Wilson, Paul J.; Schröder, Martin; Mountford, Philip; Organometallics 25 (2006) 5549–; doi:10.1021/om0606136

data_4074401
_publ_section_title
;
 Synthesis and Ethylene Polymerization Capability of Metallocene-like
 Imido Titanium Dialkyl Compounds and Their Reactions with AliBu3
;
_journal_issue                   23
_journal_name_full               Organometallics
_journal_page_first              5549
_journal_paper_doi               10.1021/om0606136
_journal_volume                  25
_journal_year                    2006
_chemical_compound_source
;
synthesis as described
;
_chemical_formula_moiety         ' C21 H40 N4 Ti1 '
_chemical_formula_sum            'C21 H40 N4 Ti'
_chemical_formula_weight         396.48
_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
_cell_angle_alpha                90
_cell_angle_beta                 98.1573(11)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.2576(2)
_cell_length_b                   15.0649(3)
_cell_length_c                   16.0266(3)
_cell_measurement_reflns_used    21293
_cell_measurement_temperature    150
_cell_measurement_theta_max      28
_cell_measurement_theta_min      5
_cell_volume                     2212.53(8)
_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 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.039
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            21293
_diffrn_reflns_theta_full        27.469
_diffrn_reflns_theta_max         27.469
_diffrn_reflns_theta_min         5.140
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.399
_exptl_absorpt_correction_T_max  0.95
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
 Denzo/Scalepack (Otwinowski & Minor, 1996) 
;
_exptl_crystal_colour            ' orange '
_exptl_crystal_density_diffrn    1.190
_exptl_crystal_description       ' fragment '
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.79
_refine_diff_density_min         -0.53
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0353
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         3922
_refine_ls_number_restraints     6
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_gt           0.0469
_refine_ls_shift/su_max          0.002363
_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: 
 1.75 1.09 1.23 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0697
_refine_ls_wR_factor_gt          0.0603
_refine_ls_wR_factor_ref         0.0603
_reflns_limit_h_max              11
_reflns_limit_h_min              -12
_reflns_limit_k_max              19
_reflns_limit_k_min              0
_reflns_limit_l_max              20
_reflns_limit_l_min              0
_reflns_number_gt                3922
_reflns_number_total             5011
_reflns_threshold_expression     I>3.00u(I)
_cod_data_source_file            om0606136si20060707_074336.cif
_cod_data_source_block           arc862
_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        ' C21 H40 N4 Ti1 '
_cod_database_code               4074401