The Niobaziridine-Hydride Functional Group: Synthesis and Divergent Reactivity
Joshua S. Figueroa; Christopher C. Cummins; Journal of the American Chemical Society 125 (2003) 4020–4021; doi:10.1021/ja028446y

data_4113622
_publ_section_title
;
 The Niobaziridine-Hydride Functional Group: Synthesis and Divergent
 Reactivity
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4020
_journal_page_last               4021
_journal_paper_doi               10.1021/ja028446y
_journal_volume                  125
_journal_year                    2003
_chemical_formula_sum            'C49 H71 N4 Nb'
_chemical_formula_weight         809.01
_chemical_name_common            Nb(MesCN)(N[Np]Ar)3
_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                86.5260(10)
_cell_angle_beta                 77.2120(10)
_cell_angle_gamma                72.1010(10)
_cell_formula_units_Z            2
_cell_length_a                   10.7225(6)
_cell_length_b                   11.9653(7)
_cell_length_c                   19.3710(11)
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      23.29
_cell_measurement_theta_min      2.69
_cell_volume                     2306.2(2)
_computing_cell_refinement       'Bruker SMART'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.969
_diffrn_measured_fraction_theta_max 0.969
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0633
_diffrn_reflns_av_sigmaI/netI    0.0379
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9197
_diffrn_reflns_theta_full        23.29
_diffrn_reflns_theta_max         23.29
_diffrn_reflns_theta_min         2.69
_exptl_absorpt_coefficient_mu    0.296
_exptl_absorpt_correction_T_max  0.4353
_exptl_absorpt_correction_T_min  0.3078
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.165
_exptl_crystal_description       block
_exptl_crystal_F_000             868
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.540
_refine_diff_density_min         -0.447
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.203
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     555
_refine_ls_number_reflns         6445
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.203
_refine_ls_R_factor_all          0.0435
_refine_ls_R_factor_gt           0.0416
_refine_ls_shift/su_max          0.208
_refine_ls_shift/su_mean         0.033
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1346
_refine_ls_wR_factor_ref         0.1371
_reflns_number_gt                6071
_reflns_number_total             6445
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja028446ysi20030122_052029_8.cif
_cod_data_source_block           01185m
_cod_database_code               4113622