Reduction of ((t)BuN═)NbCl3(py)2 in a Salt-Free Manner for Generating Nb(IV) Dinuclear Complexes and Their Reactivity toward Benzo[c]cinnoline.
Saito, Teruhiko; Nishiyama, Haruka; Kawakita, Kento; Nechayev, Michael; Kriegel, Benjamin; Tsurugi, Hayato; Arnold, John; Mashima, Kazushi; Inorganic chemistry 54 (2015) 6004–6009; doi:10.1021/acs.inorgchem.5b00812

data_1520057
_publ_section_title
;
 Reduction of ((t)BuN&#x2550;)NbCl3(py)2 in a Salt-Free Manner for
 Generating Nb(IV) Dinuclear Complexes and Their Reactivity toward
 Benzo[c]cinnoline.
;
_journal_issue                   12
_journal_name_full               'Inorganic chemistry'
_journal_page_first              6004
_journal_page_last               6009
_journal_paper_doi               10.1021/acs.inorgchem.5b00812
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C53 H54 Cl4 N7 Nb2'
_chemical_formula_weight         1116.65
_chemical_name_common            Complex7
_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                95.1200(10)
_cell_angle_beta                 93.1150(10)
_cell_angle_gamma                92.2480(10)
_cell_formula_units_Z            2
_cell_length_a                   9.8238(5)
_cell_length_b                   14.4840(7)
_cell_length_c                   18.6974(9)
_cell_measurement_temperature    113(2)
_cell_volume                     2643.3(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0844
_diffrn_reflns_av_sigmaI/netI    0.0704
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            52623
_diffrn_reflns_theta_full        27.43
_diffrn_reflns_theta_max         27.43
_diffrn_reflns_theta_min         3.11
_diffrn_standards_number         52623
_exptl_absorpt_coefficient_mu    0.677
_exptl_absorpt_correction_T_max  0.9478
_exptl_absorpt_correction_T_min  0.8543
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.403
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1142
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.998
_refine_diff_density_min         -0.904
_refine_diff_density_rms         0.130
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     637
_refine_ls_number_reflns         12009
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0754
_refine_ls_R_factor_gt           0.0533
_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^)+(0.0467P)^2^+7.5122P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1223
_refine_ls_wR_factor_ref         0.1399
_reflns_number_gt                9148
_reflns_number_total             12009
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00812_si_003.cif
_cod_data_source_block           Complex7
_cod_depositor_comments
'Adding full bibliography for 1520054--1520057.cif.'
_cod_database_code               1520057