Hafnium Bis(phenoxyimino) Dibenzyl Complexes and Their Activation toward Olefin Polymerization
Axenov, Kirill V.; Klinga, Martti; Lehtonen, Olli; Koskela, Harri T.; Leskelä, Markku; Repo, Timo; Organometallics 26 (2007) 1444–; doi:10.1021/om060753f

data_4072522
_publ_section_title
;
 Hafnium Bis(phenoxyimino) Dibenzyl Complexes and Their Activation toward
 Olefin Polymerization
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1444
_journal_paper_doi               10.1021/om060753f
_journal_volume                  26
_journal_year                    2007
_chemical_formula_moiety         'C78 H78 Hf N2 O2'
_chemical_formula_sum            'C78 H78 Hf N2 O2'
_chemical_formula_weight         1253.91
_chemical_name_systematic
; 
 bis[2-[[(phenylmethyl)imino-kN]methyl]-4,6-di(1-methyl-1-phenylethyl)
 phenolato-kO]bis(phenylmethyl)hafnium(IV) 
;
_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                89.03(1)
_cell_angle_beta                 65.96(1)
_cell_angle_gamma                73.39(1)
_cell_formula_units_Z            2
_cell_length_a                   14.608(2)
_cell_length_b                   15.646(2)
_cell_length_c                   15.844(2)
_cell_measurement_temperature    173(2)
_cell_volume                     3148.6(8)
_computing_cell_refinement       'COLLECT (Nonius, 2002)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        'COLLECT (Nonius, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL (Sheldrick, 1997)'
_computing_structure_refinement  'SHELX97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR2002 (Burla et al., 2003)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'omega- and phi-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  0.0688
_diffrn_reflns_av_sigmaI/netI    0.0824
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            48737
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.71
_exptl_absorpt_coefficient_mu    1.706
_exptl_absorpt_correction_T_max  0.772
_exptl_absorpt_correction_T_min  0.675
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.16
_refine_diff_density_max         2.630
_refine_diff_density_min         -2.546
_refine_diff_density_rms         0.125
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     748
_refine_ls_number_reflns         14220
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0839
_refine_ls_R_factor_gt           0.0485
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0450P)^2^+5.4000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1015
_refine_ls_wR_factor_ref         0.1165
_reflns_number_gt                10543
_reflns_number_total             14220
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060753fsi20060821_081706.cif
_cod_data_source_block           axi61
_cod_database_code               4072522