Synthesis and Electronic Structure of Cationic, Neutral, and Anionic Bis(imino)pyridine Iron Alkyl Complexes: Evaluation of Redox Activity in Single-Component Ethylene Polymerization Catalysts
Aaron M. Tondreau; Carsten Milsmann; Andrew D. Patrick; Helen M. Hoyt; Emil Lobkovsky; Karl Wieghardt; Paul J. Chirik; Journal of the American Chemical Society 132 (2010) 15046–15059; doi:10.1021/ja106575b

data_4103349
_publ_section_title
;
 Synthesis and Electronic Structure of Cationic, Neutral, and Anionic
 Bis(imino)pyridine Iron Alkyl Complexes: Evaluation of Redox Activity in
 Single-Component Ethylene Polymerization Catalysts
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15046
_journal_page_last               15059
_journal_paper_doi               10.1021/ja106575b
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         'C38 H54 Fe N3, C24 H20 B, 1.5(C6 H5 F)'
_chemical_formula_sum            'C71 H81.5 B F1.5 Fe N3'
_chemical_formula_weight         1072.05
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 106.4620(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.3132(7)
_cell_length_b                   12.8607(4)
_cell_length_c                   25.0256(9)
_cell_measurement_reflns_used    9903
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      24.84
_cell_measurement_theta_min      2.17
_cell_volume                     6578.4(4)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker X8 APEX II diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0433
_diffrn_reflns_av_sigmaI/netI    0.0457
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            56100
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.87
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.274
_exptl_absorpt_correction_T_max  0.9732
_exptl_absorpt_correction_T_min  0.8530
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.082
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             2292
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_platon_squeeze_details
;
;
_refine_diff_density_max         0.342
_refine_diff_density_min         -0.506
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     774
_refine_ls_number_reflns         13452
_refine_ls_number_restraints     201
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0737
_refine_ls_R_factor_gt           0.0487
_refine_ls_shift/su_max          0.291
_refine_ls_shift/su_mean         0.009
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0894P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1338
_refine_ls_wR_factor_ref         0.1453
_reflns_number_gt                9234
_reflns_number_total             13452
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja106575b_si_001_1.cif
_cod_data_source_block           amt26
_cod_original_formula_sum        'C71 H81.50 B F1.50 Fe N3'
_cod_database_code               4103349