Functional Group Chemistry at the Group 4 Bent Metallocene Frameworks: Formation and “Metal-Free” Catalytic Hydrogenation of Bis(imino-Cp)zirconium Complexes
Axenov, Kirill V.; Kehr, Gerald; Fröhlich, Roland; Erker, Gerhard; Organometallics 28 (2009) 5148–; doi:10.1021/om9004093

data_4069779
_publ_section_title
;
 Functional Group Chemistry at the Group 4 Bent Metallocene Frameworks:
 Formation and &#x201C;Metal-Free&#x201D; Catalytic Hydrogenation of
 Bis(imino-Cp)zirconium Complexes
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              5148
_journal_paper_doi               10.1021/om9004093
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C21 H31 N Si'
_chemical_formula_weight         325.56
_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                82.22(1)
_cell_angle_beta                 88.91(1)
_cell_angle_gamma                66.88(1)
_cell_formula_units_Z            2
_cell_length_a                   8.657(1)
_cell_length_b                   8.942(1)
_cell_length_c                   14.169(1)
_cell_measurement_reflns_used    3050
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      68.25
_cell_measurement_theta_min      0.88
_cell_volume                     998.76(19)
_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 0.949
_diffrn_measured_fraction_theta_max 0.949
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.039
_diffrn_reflns_av_sigmaI/netI    0.0244
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11543
_diffrn_reflns_theta_full        69.16
_diffrn_reflns_theta_max         69.16
_diffrn_reflns_theta_min         5.89
_exptl_absorpt_coefficient_mu    1.011
_exptl_absorpt_correction_T_max  0.9512
_exptl_absorpt_correction_T_min  0.6317
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            yellow-red
_exptl_crystal_density_diffrn    1.083
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     215
_refine_ls_number_reflns         3544
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0512
_refine_ls_R_factor_gt           0.0492
_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^)+(0.0829P)^2^+0.2574P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1349
_refine_ls_wR_factor_ref         0.1370
_reflns_number_gt                3331
_reflns_number_total             3544
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om9004093_si_002.cif
_cod_data_source_block           erk3828
_cod_original_cell_volume        998.8(2)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4069779