Penultimate Effect in Ethylene-Styrene Copolymerization and the Discovery of Highly Active Ethylene-Styrene Catalysts with Increased Styrene Reactivity
Daniel J. Arriola; Marilyn Bokota; Richard E. Campbell; Jerzy Klosin; Robert E. LaPointe; O. David Redwine; Ravi B. Shankar; Francis J. Timmers; Khalil A. Abboud; Journal of the American Chemical Society 129 (2007) 7065–7076; doi:10.1021/ja070061y

data_4109477
_publ_section_title
;
 Penultimate Effect in Ethylene-Styrene Copolymerization and the Discovery
 of Highly Active Ethylene-Styrene Catalysts with Increased Styrene
 Reactivity
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7065
_journal_page_last               7076
_journal_paper_doi               10.1021/ja070061y
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C39 H39 N Si Ti'
_chemical_formula_weight         597.70
_chemical_name_systematic
; 
 ? 
;
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                68.603(2)
_cell_angle_beta                 82.910(1)
_cell_angle_gamma                81.242(2)
_cell_formula_units_Z            4
_cell_length_a                   14.282(1)
_cell_length_b                   14.388(1)
_cell_length_c                   16.505(1)
_cell_measurement_temperature    173(2)
_cell_volume                     3112.5(4)
_computing_cell_refinement       'Bruker SMART & SAINT (Bruker 1998)'
_computing_data_collection       'Bruker SMART (Bruker 1998)'
_computing_data_reduction        'Bruker SHELXTL (Bruker 1998)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'SMART CCD area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0689
_diffrn_reflns_av_sigmaI/netI    0.1592
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            21179
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    0.342
_exptl_absorpt_correction_T_max  0.9829
_exptl_absorpt_correction_T_min  0.9164
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
'based on measured indexed crystal faces, SHELXTL (Bruker 1998)'
_exptl_crystal_colour            'Dark Brown'
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_description       Plates
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.339
_refine_diff_density_min         -0.367
_refine_diff_density_rms         0.066
_refine_ls_extinction_coef       0.00037(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.971
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1070
_refine_ls_number_reflns         13896
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.971
_refine_ls_R_factor_all          0.1389
_refine_ls_R_factor_gt           0.0551
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0077P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0808
_refine_ls_wR_factor_ref         0.0946
_reflns_number_gt                6880
_reflns_number_total             13896
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja070061ysi20070104_010616_4.cif
_cod_data_source_block           3b
_cod_original_cell_volume        3112.4(4)
_cod_database_code               4109477