Evidence for the Existence of Terminal Scandium Imidos: Mechanistic Studies Involving Imido-Scandium Bond Formation and C-H Activation Reactions
Benjamin F. Wicker; Hongjun Fan; Anne K. Hickey; Marco G. Crestani; Jennifer Scott; Maren Pink; Daniel J. Mindiola; Journal of the American Chemical Society 134 (2012) 20081–20096; doi:10.1021/ja307279r

data_4118982
_publ_section_title
;
 Evidence for the Existence of Terminal Scandium Imidos: Mechanistic
 Studies Involving Imido-Scandium Bond Formation and C-H Activation
 Reactions
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              20081
_journal_page_last               20096
_journal_paper_doi               10.1021/ja307279r
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C44 H64 N3 P2 Sc'
_chemical_formula_weight         741.88
_chemical_name_systematic
; 
 ? 
;
_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                84.857(3)
_cell_angle_beta                 88.537(3)
_cell_angle_gamma                65.067(3)
_cell_formula_units_Z            2
_cell_length_a                   10.8710(18)
_cell_length_b                   12.1829(18)
_cell_length_c                   17.163(3)
_cell_measurement_reflns_used    4956
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      26.56
_cell_measurement_theta_min      2.37
_cell_volume                     2052.7(6)
_computing_cell_refinement       'APEX II v2010.11.3 (Bruker, 2010)'
_computing_data_collection       'APEX II v2010.11.3 (Bruker, 2010)'
_computing_data_reduction        'APEX II v2010.11.3 (Bruker, 2010)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2010)'
_computing_publication_material  'SHELXTL (Bruker, 2010)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2010)'
_computing_structure_solution    'SIR-2004 (Burla et al., 2005)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 83.33
_diffrn_detector_type            'Bruker APEXII'
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_details
'0.50 degree frames measured for 120 seconds each'
_diffrn_measurement_device       'APEX Kappa Duo'
_diffrn_measurement_device_type  Kappa
_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  0.0467
_diffrn_reflns_av_sigmaI/netI    0.0651
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            25864
_diffrn_reflns_theta_full        27.58
_diffrn_reflns_theta_max         27.58
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    0.291
_exptl_absorpt_correction_T_max  0.9799
_exptl_absorpt_correction_T_min  0.9468
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing; 1995'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.200
_exptl_crystal_description       plate
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.360
_refine_diff_density_min         -0.454
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     466
_refine_ls_number_reflns         9431
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0804
_refine_ls_R_factor_gt           0.0457
_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^)+(0.0526P)^2^+0.7045P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1029
_refine_ls_wR_factor_ref         0.1165
_reflns_number_gt                6576
_reflns_number_total             9431
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja307279r_si_003.cif
_cod_data_source_block           11078
_cod_original_cell_volume        2052.8(6)
_cod_original_sg_symbol_H-M      'P -1 '
_cod_database_code               4118982