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_4113616
_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 O'
_chemical_formula_weight         679.81
_chemical_name_common            Nb(O)(N[Np]Ar)3
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 99.542(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   19.7802(18)
_cell_length_b                   12.6057(11)
_cell_length_c                   31.987(3)
_cell_measurement_reflns_used    95
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      23.28
_cell_measurement_theta_min      2.22
_cell_volume                     7865.4(12)
_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 0.989
_diffrn_measured_fraction_theta_max 0.989
_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  0.0563
_diffrn_reflns_av_sigmaI/netI    0.0464
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            15470
_diffrn_reflns_theta_full        23.28
_diffrn_reflns_theta_max         23.28
_diffrn_reflns_theta_min         2.22
_exptl_absorpt_coefficient_mu    0.336
_exptl_absorpt_correction_T_max  0.3030
_exptl_absorpt_correction_T_min  0.2476
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.148
_exptl_crystal_description       block
_exptl_crystal_F_000             2912
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.385
_refine_diff_density_min         -0.593
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     457
_refine_ls_number_reflns         5587
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0550
_refine_ls_R_factor_gt           0.0450
_refine_ls_shift/su_max          0.178
_refine_ls_shift/su_mean         0.013
_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          0.1396
_refine_ls_wR_factor_ref         0.1458
_reflns_number_gt                4683
_reflns_number_total             5587
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja028446ysi20030122_052029_2.cif
_cod_data_source_block           002005m
_cod_database_code               4113616