Dis-assembly of a Benzylic CF3 Group Mediated by a Niobium(III) Imido Complex
Thomas L. Gianetti; Robert G. Bergman; John Arnold; Journal of the American Chemical Society 135 (2013) 8145–8148; doi:10.1021/ja4033007

data_4119860
_publ_section_title
;
 Dis-assembly of a Benzylic CF3 Group Mediated by a Niobium(III) Imido
 Complex
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8145
_journal_page_last               8148
_journal_paper_doi               10.1021/ja4033007
_journal_volume                  135
_journal_year                    2013
_chemical_formula_moiety         'C66 H102 N6 Nb2'
_chemical_formula_sum            'C66 H102 N6 Nb2'
_chemical_formula_weight         1165.36
_chemical_melting_point          468(1)
_chemical_name_common            'Complex 4'
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 120.0960(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   17.7537(15)
_cell_length_b                   19.0483(16)
_cell_length_c                   11.5495(9)
_cell_measurement_reflns_used    9980
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.36
_cell_measurement_theta_min      2.95
_cell_volume                     3379.2(5)
_computing_cell_refinement       'Bruker APEX2 v.2009.1'
_computing_data_collection       'Bruker APEX2 v.2009.1'
_computing_data_reduction        'Bruker APEX2 v.2009.1'
_computing_molecular_graphics    ORTEP-32
_computing_publication_material  WinGX
_computing_structure_refinement  SHELXL-97
_computing_structure_solution    SIR-2004
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-I CCD'
_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  0.0215
_diffrn_reflns_av_sigmaI/netI    0.0107
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            30549
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.39
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    0.379
_exptl_absorpt_correction_T_max  0.9218
_exptl_absorpt_correction_T_min  0.9140
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.145
_exptl_crystal_description       rode
_exptl_crystal_F_000             1244
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.23
_platon_squeeze_details
;
;
_refine_diff_density_max         0.519
_refine_diff_density_min         -0.423
_refine_diff_density_rms         0.052
_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     206
_refine_ls_number_reflns         3204
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0253
_refine_ls_R_factor_gt           0.0244
_refine_ls_shift/su_max          0.049
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0343P)^2^+5.3762P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0668
_refine_ls_wR_factor_ref         0.0675
_reflns_number_gt                3082
_reflns_number_total             3204
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja4033007_si_002_4.cif
_cod_data_source_block           (4)
_cod_database_code               4119860