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_4113618
_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            'C39 H60 N3 Nb Se'
_chemical_formula_weight         742.77
_chemical_name_common            Nb(Se)(N[Np]Ar)3
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.0000(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.1454(8)
_cell_length_b                   10.6072(8)
_cell_length_c                   33.260(3)
_cell_measurement_reflns_used    97
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      23.30
_cell_measurement_theta_min      2.28
_cell_volume                     3932.0(5)
_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      183(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_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  0.0421
_diffrn_reflns_av_sigmaI/netI    0.0288
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            15365
_diffrn_reflns_theta_full        23.30
_diffrn_reflns_theta_max         23.30
_diffrn_reflns_theta_min         2.28
_exptl_absorpt_coefficient_mu    1.260
_exptl_absorpt_correction_T_max  0.2757
_exptl_absorpt_correction_T_min  0.2147
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.255
_exptl_crystal_description       block
_exptl_crystal_F_000             1560
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.573
_refine_diff_density_min         -0.954
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.387
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         5626
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.387
_refine_ls_R_factor_all          0.0655
_refine_ls_R_factor_gt           0.0651
_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^)+(0.0000P)^2^+18.8327P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1322
_refine_ls_wR_factor_ref         0.1323
_reflns_number_gt                5595
_reflns_number_total             5626
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja028446ysi20030122_052029_4.cif
_cod_data_source_block           0020631m
_cod_database_code               4113618