[(Allylsilyl)(η-amidosilyl)-η5-cyclopentadienyl] Group 4 Metal Complexes: Synthesis, Reactivity, and Olefin Polymerization
Cristina Ramos; Pascual Royo; Maurizio Lanfranchi; Maria A. Pellinghelli; Antonio Tiripicchio; Organometallics 26 (2007) 445–454; doi:10.1021/om060900+

data_4063330
_publ_section_title
;
 [(Allylsilyl)(\h-amidosilyl)-\h5-cyclopentadienyl] Group 4 Metal
 Complexes: Synthesis, Reactivity, and Olefin Polymerization
;
_journal_name_full               Organometallics
_journal_page_first              445
_journal_page_last               454
_journal_paper_doi               10.1021/om060900+
_journal_volume                  26
_journal_year                    2007
_chemical_formula_moiety         'C21 H34 Cl Hf N Si2'
_chemical_formula_sum            'C21 H34 Cl Hf N Si2'
_chemical_formula_weight         570.61
_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                 127.95(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.784(12)
_cell_length_b                   11.589(6)
_cell_length_c                   20.647(10)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      18
_cell_measurement_theta_min      9
_cell_volume                     4865(4)
_computing_cell_refinement       'local programs'
_computing_data_collection       'local programs'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    ORTEP
_computing_publication_material  WinGX
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.948
_diffrn_measured_fraction_theta_max 0.948
_diffrn_measurement_device_type  'Philips PW 1100'
_diffrn_measurement_method       theta/2theta
_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  0.0314
_diffrn_reflns_av_sigmaI/netI    0.0307
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3735
_diffrn_reflns_theta_full        24.00
_diffrn_reflns_theta_max         24.00
_diffrn_reflns_theta_min         3.01
_diffrn_standards_decay_%        14
_diffrn_standards_interval_count 100
_diffrn_standards_number         1
_exptl_absorpt_coefficient_mu    4.502
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.830
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Walker and Stuart'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.558
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             2272
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.25
_refine_diff_density_max         1.308
_refine_diff_density_min         -0.806
_refine_diff_density_rms         0.132
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     242
_refine_ls_number_reflns         3623
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0351
_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^)+(0.0309P)^2^+76.9759P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0767
_refine_ls_wR_factor_ref         0.0858
_reflns_number_gt                2826
_reflns_number_total             3623
_reflns_threshold_expression     >2sigma(I)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4063330