Elucidation of Substituent Effects in the Polymerization of Propylene Promoted by Titanium Amidinates
Aharonovich, Sinai; Botoshansky, Mark; Balazs, Yael S.; Eisen, Moris S.; Organometallics 31 (2012) 3435–; doi:10.1021/om300068w

data_4078049
_publ_section_title
;
 Elucidation of Substituent Effects in the Polymerization of Propylene
 Promoted by Titanium Amidinates
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              3435
_journal_paper_doi               10.1021/om300068w
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C30 H54 Cl2 N4 Si4 Ti'
_chemical_formula_sum            'C30 H54 Cl2 N4 Si4 Ti'
_chemical_formula_weight         701.94
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 128.7431(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   28.4890(5)
_cell_length_b                   8.8040(3)
_cell_length_c                   20.1850(5)
_cell_measurement_reflns_used    8400
_cell_measurement_temperature    230.0(1)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      1.018
_cell_volume                     3948.7(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Nonius (1997), KappaCCD Collect Program'
_computing_data_reduction
;
HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_molecular_graphics
;
Molecular Structure Corporation (1999). 
ORTEP. TEXRAY Structure Analysis Package. 
MSC, 3200 Research Forest Drive, The 
Woodlands,TX 77381, USA.
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
;
S.Mackay, C.J.Gilmore, C.Edwards, M. Tremayne, N. Stuart, K.Shankland 
"maXus": a computer program for the solution and refinement of crystal 
structures from diffraction data University of Glasgow, Scotland, UK, 
Nonius BV, Delft, The Netherlands and MacScience Co. Ltd.,
Yokohama, Japan (1998)
;
_diffrn_ambient_temperature      230.0(1)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_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  0.0216
_diffrn_reflns_av_sigmaI/netI    0.0500
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            6025
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         1.83
_exptl_absorpt_coefficient_mu    0.498
_exptl_absorpt_correction_T_max  0.8650
_exptl_absorpt_correction_T_min  0.8182
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.181
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1496
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.276
_refine_diff_density_min         -0.441
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.950
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     213
_refine_ls_number_reflns         3499
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.950
_refine_ls_R_factor_all          0.0488
_refine_ls_R_factor_gt           0.0325
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0517P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0849
_refine_ls_wR_factor_ref         0.0884
_reflns_number_gt                2485
_reflns_number_total             3499
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300068w_si_002.cif
_cod_data_source_block           tipetam
_cod_original_cell_volume        3948.73(18)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4078049