Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen and Silane Complexes and Their Application to Catalytic Hydrogenation and Hydrosilation
Suzanne C. Bart; Emil Lobkovsky; Paul J. Chirik; Journal of the American Chemical Society 126 (2004) 13794–13807; doi:10.1021/ja046753t

data_4113092
_publ_section_title
;
 Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen
 and Silane Complexes and Their Application to Catalytic Hydrogenation and
 Hydrosilation
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13794
_journal_page_last               13807
_journal_paper_doi               10.1021/ja046753t
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C45 H59 Fe N3 Si2'
_chemical_formula_weight         753.98
_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                 102.0240(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.6180(6)
_cell_length_b                   12.4246(5)
_cell_length_c                   26.3319(10)
_cell_measurement_temperature    173(2)
_cell_volume                     4357.6(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker 1K CCD area detector'
_diffrn_measurement_method       '0.3 deg. 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  0.0582
_diffrn_reflns_av_sigmaI/netI    0.0644
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            33900
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.58
_exptl_absorpt_coefficient_mu    0.434
_exptl_absorpt_correction_T_max  0.9378
_exptl_absorpt_correction_T_min  0.8457
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.149
_exptl_crystal_description       block
_exptl_crystal_F_000             1616
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.414
_refine_diff_density_min         -0.364
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     723
_refine_ls_number_reflns         9931
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0920
_refine_ls_R_factor_gt           0.0481
_refine_ls_shift/su_max          3.739
_refine_ls_shift/su_mean         0.114
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0550P)^2^+0.8825P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1013
_refine_ls_wR_factor_ref         0.1167
_reflns_number_gt                6531
_reflns_number_total             9931
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja046753tsi20040602_105814.cif
_cod_data_source_block           scb16
_cod_database_code               4113092