Redox-Initiated Reactivity of Dinuclear β-Diketiminatoniobium Imido Complexes.
Kriegel, Benjamin M.; Naested, Lara C. E.; Nocton, Grégory; Lakshmi, K. V.; Lohrey, Trevor D.; Bergman, Robert G.; Arnold, John; Inorganic chemistry 56 (2017) 1626–1637; doi:10.1021/acs.inorgchem.6b02735

data_4345052
_publ_section_title
;
 Redox-Initiated Reactivity of Dinuclear \b-Diketiminatoniobium Imido
 Complexes.
;
_journal_issue                   3
_journal_name_full               'Inorganic chemistry'
_journal_page_first              1626
_journal_page_last               1637
_journal_paper_doi               10.1021/acs.inorgchem.6b02735
_journal_volume                  56
_journal_year                    2017
_chemical_formula_sum            'C83.75 H90.25 B F20 N6 Nb2 O1.75'
_chemical_formula_weight         1785.49
_chemical_name_common            bmkxr59
_chemical_name_systematic
; 
 ? 
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 100.729(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   29.3130(18)
_cell_length_b                   16.0203(9)
_cell_length_c                   17.5435(12)
_cell_measurement_reflns_used    9657
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.39
_cell_measurement_theta_min      2.34
_cell_volume                     8094.5(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ORTEP-32
_computing_publication_material  WinGX
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    SHELXT
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0789
_diffrn_reflns_av_unetI/netI     0.0544
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            116724
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.415
_diffrn_reflns_theta_min         1.414
_diffrn_source                   'microfocus sealed tube'
_exptl_absorpt_coefficient_mu    0.380
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6997
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.465
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             3663
_exptl_crystal_size_max          0.080
_exptl_crystal_size_mid          0.060
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.821
_refine_diff_density_min         -0.614
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1062
_refine_ls_number_reflns         14873
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0647
_refine_ls_R_factor_gt           0.0418
_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^)+(0.0409P)^2^+8.7006P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0909
_refine_ls_wR_factor_ref         0.1004
_reflns_Friedel_coverage         0.000
_reflns_number_gt                11298
_reflns_number_total             14873
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic6b02735_si_004.cif
_cod_data_source_block           shelx
_cod_depositor_comments
'Adding full bibliography for 4345050--4345053.cif.'
_cod_database_code               4345052
_shelx_estimated_absorpt_t_min   0.970
_shelx_estimated_absorpt_t_max   0.989
_shelxl_version_number           2014-3
_shelx_res_checksum              61227
_shelx_hkl_checksum              68724