Highly enantioselective hydroaminoalkylation of secondary amines catalyzed by group 5 metal amides with chiral biarylamidate ligands.
Zi, Guofu; Zhang, Furen; Song, Haibin; Chemical communications (Cambridge, England) 46 (2010) 6296–6298; doi:10.1039/c0cc01265c

data_7112991
_publ_section_title
;
 Highly enantioselective hydroaminoalkylation of secondary amines
 catalyzed by group 5 metal amides with chiral biarylamidate ligands.
;
_journal_issue                   34
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6296
_journal_page_last               6298
_journal_paper_doi               10.1039/c0cc01265c
_journal_volume                  46
_journal_year                    2010
_chemical_formula_moiety         'C46 H60 N5 Nb O2'
_chemical_formula_sum            'C46 H60 N5 Nb O2'
_chemical_formula_weight         807.90
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 111.011(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.934(2)
_cell_length_b                   14.079(3)
_cell_length_c                   13.534(2)
_cell_measurement_reflns_used    2763
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      72.00
_cell_measurement_theta_min      27.70
_cell_volume                     2122.8(7)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r4'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r4 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r4'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Rigaku Saturn944 CCD camera'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0448
_diffrn_reflns_av_sigmaI/netI    0.0543
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            21782
_diffrn_reflns_theta_full        72.09
_diffrn_reflns_theta_max         72.09
_diffrn_reflns_theta_min         3.50
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.633
_exptl_absorpt_correction_T_max  0.6210
_exptl_absorpt_correction_T_min  0.5950
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   CrystalClear
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.264
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.867
_refine_diff_density_min         -1.015
_refine_diff_density_rms         0.095
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.001(11)
_refine_ls_extinction_coef       0.0022(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.180
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     510
_refine_ls_number_reflns         6900
_refine_ls_number_restraints     45
_refine_ls_restrained_S_all      1.184
_refine_ls_R_factor_all          0.0399
_refine_ls_R_factor_gt           0.0369
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0671P)^2^+0.7349P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1003
_refine_ls_wR_factor_ref         0.1241
_reflns_number_gt                6542
_reflns_number_total             6900
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0cc01265c.txt
_cod_data_source_block           compound6
_cod_original_cell_volume        2122.8(6)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7112991