Substituent Effects in the Hydrosilylation of Coordinated Dinitrogen in a Ditantalum Complex: Cleavage and Functionalization of N2
Bruce A. MacKay; Rui F. Munha; Michael D. Fryzuk; Journal of the American Chemical Society 128 (2006) 9472–9483; doi:10.1021/ja061508q

data_4110718
_publ_contact_author_address
;
   Department of Chemistry
   University of British Columbia
   2036 Main Mall
   Vancouver, BC  Canada V6T 1Z1
   E-mail:  fryzuk@chem.ubc.ca
;
_publ_contact_author_name        'Prof. M.D. Fryzuk'
_publ_section_title
;
 Substituent Effects in the Hydrosilylation of Coordinated Dinitrogen in a
 Ditantalum Complex: Cleavage and Functionalization of N2
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9472
_journal_page_last               9483
_journal_paper_doi               10.1021/ja061508q
_journal_volume                  128
_journal_year                    2006
_chemical_formula_sum            'C54 H72 N6 O0 P2 Si5 Ta2'
_chemical_formula_weight         1369.47
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 95.262(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.825(6)
_cell_length_b                   29.26(3)
_cell_length_c                   15.831(8)
_cell_measurement_reflns_used    14254
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.86
_cell_measurement_theta_min      2.2
_cell_volume                     6838(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 11.76
_diffrn_measured_fraction_theta_full 0.873
_diffrn_measured_fraction_theta_max 0.873
_diffrn_measurement_device_type  'Rigaku/ADSC CCD'
_diffrn_measurement_method       'area detector'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0788
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            14254
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    4.208
_exptl_absorpt_correction_T_max  0.556
_exptl_absorpt_correction_T_min  0.406
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.663
_exptl_crystal_description       plate
_exptl_crystal_F_000             3420
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         3.056
_refine_diff_density_min         -2.304
_refine_diff_density_rms         0.236
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.132
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     642
_refine_ls_number_reflns         14254
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_R_factor_all          0.0865
_refine_ls_R_factor_gt           0.0705
_refine_ls_shift/su_max          0.074
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0513P)^2^+91.6596P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1552
_refine_ls_wR_factor_ref         0.1682
_reflns_number_gt                11834
_reflns_number_total             14254
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja061508qsi20060512_041328_3.cif
_cod_data_source_block           Compound11
_cod_database_code               4110718