The niobium oxoazides [NbO(N3)3], [NbO(N3)3·2CH3CN], [(bipy)NbO(N3)3], Cs2[NbO(N3)5] and [PPh4]2[NbO(N3)5].
Haiges, Ralf; Vasiliu, Monica; Dixon, David A.; Christe, Karl O.; Dalton transactions (Cambridge, England : 2003) 45 (2016) 10523–10529; doi:10.1039/c6dt01479h

data_7039250
_publ_section_title
;
 The niobium oxoazides [NbO(N3)3], [NbO(N3)3&#x00B7;2CH3CN],
 [(bipy)NbO(N3)3], Cs2[NbO(N3)5] and [PPh4]2[NbO(N3)5].
;
_journal_issue                   26
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10523
_journal_page_last               10529
_journal_paper_doi               10.1039/c6dt01479h
_journal_volume                  45
_journal_year                    2016
_chemical_formula_moiety         'N15 Nb O, 2(Cs)'
_chemical_formula_sum            'Cs2 N15 Nb O'
_chemical_formula_weight         584.88
_chemical_name_common            Cs2NbON15
_chemical_properties_physical    'Moisture-sensitive, Heat-sensitive, explosive'
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_audit_update_record
;
2015-08-20 deposited with the CCDC.
2016-05-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.433(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.5793(15)
_cell_length_b                   16.4373(19)
_cell_length_c                   12.8012(15)
_cell_measurement_reflns_used    6025
_cell_measurement_temperature    133.(2)
_cell_measurement_theta_max      28.6922
_cell_measurement_theta_min      2.4807
_cell_volume                     2644.5(5)
_computing_cell_refinement       'APEX2 v2014.1-1 (Bruker AXS)'
_computing_data_collection       'SMART V5.632'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS, 2013)'
_computing_structure_refinement  'SHELXTL XLMP 2014/1 (Bruker AXS)'
_computing_structure_solution    'SHELXTL XT 2014/1 (Bruker AXS)'
_diffrn_ambient_temperature      133.(2)
_diffrn_detector_area_resol_mean 8.3660
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.924
_diffrn_measurement_device_type  'Bruker APEX CCD'
_diffrn_measurement_method       'omega- and phi-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'MoK\a '
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0213
_diffrn_reflns_av_unetI/netI     0.0257
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8376
_diffrn_reflns_theta_full        25.24
_diffrn_reflns_theta_max         28.72
_diffrn_reflns_theta_min         2.04
_diffrn_source                   'fine-focus tube'
_exptl_absorpt_coefficient_mu    6.358
_exptl_absorpt_correction_T_max  0.60
_exptl_absorpt_correction_T_min  0.50
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS V2012/1'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.938
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2112
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile'
_exptl_crystal_size_max          0.170
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.090
_refine_diff_density_max         0.625
_refine_diff_density_min         -0.772
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         3157
_refine_ls_number_restraints     39
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0226
_refine_ls_R_factor_gt           0.0200
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0169P)^2^+4.2919P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0442
_refine_ls_wR_factor_ref         0.0450
_reflns_number_gt                2931
_reflns_number_total             3157
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6dt01479h2.cif
_cod_data_source_block           Cs2NbON15
_cod_depositor_comments
'Adding full bibliography for 7039248--7039250.cif.'
_cod_database_code               7039250
_shelx_res_checksum              7804