(“Ferrocene-salaldiminato”)zirconium Complexes for Ethylene Polymerization Catalysis: The Role of the Bulky Substituents
Wang, Xiaowu; Fröhlich, Roland; Daniliuc, Constantin G.; Rieger, Bernhard; Jonovic, Aleksandra; Kehr, Gerald; Erker, Gerhard; Organometallics 31 (2012) 6741–; doi:10.1021/om3004509

data_4079068
_publ_section_title
;
 (&#x201C;Ferrocene-salaldiminato&#x201D;)zirconium Complexes for Ethylene
 Polymerization Catalysis: The Role of the Bulky Substituents
;
_journal_issue                   19
_journal_name_full               Organometallics
_journal_page_first              6741
_journal_paper_doi               10.1021/om3004509
_journal_volume                  31
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_sum            'C19 H28 Fe O3 Si2'
_chemical_formula_weight         416.44
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           170
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 65'
_symmetry_space_group_name_H-M   'P 65'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            6
_cell_length_a                   23.4373(5)
_cell_length_b                   23.4373(5)
_cell_length_c                   7.65000(10)
_cell_measurement_reflns_used    6563
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      4.08
_cell_volume                     3639.21(12)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Montel mirror'
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.041
_diffrn_reflns_av_sigmaI/netI    0.0355
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            23609
_diffrn_reflns_theta_full        27.89
_diffrn_reflns_theta_max         27.89
_diffrn_reflns_theta_min         4.38
_exptl_absorpt_coefficient_mu    0.733
_exptl_absorpt_correction_T_max  0.9643
_exptl_absorpt_correction_T_min  0.7836
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.140
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_platon_squeeze_details
;
 An unidentified disordered solvent molecule was found in the asymmetrical
 unit and could not be satisfactorily refined. The program SQUEEZE was 
 therefore used to remove mathematically the effect of the solvent.
;
_refine_diff_density_max         0.869
_refine_diff_density_min         -0.324
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.07(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     233
_refine_ls_number_reflns         5364
_refine_ls_number_restraints     115
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0653
_refine_ls_R_factor_gt           0.0581
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0777P)^2^+2.5149P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1526
_refine_ls_wR_factor_ref         0.1585
_reflns_number_gt                4728
_reflns_number_total             5364
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3004509_si_004.cif
_cod_data_source_block           erk5918
_cod_original_sg_symbol_H-M      P65
_cod_database_code               4079068