Redox-Noninnocent Ligand-Supported Vanadium Catalysts for the Chemoselective Reduction of C═X (X = O, N) Functionalities.
Zhang, Guoqi; Wu, Jing; Zheng, Shengping; Neary, Michelle C.; Mao, Jincheng; Flores, Marco; Trovitch, Ryan J.; Dub, Pavel A.; Journal of the American Chemical Society 141 (2019) 15230–15239; doi:10.1021/jacs.9b07062

data_4129019
_publ_section_title
;
 Redox-Noninnocent Ligand-Supported Vanadium Catalysts for the
 Chemoselective Reduction of C&#x2550;X (X = O, N) Functionalities.
;
_journal_issue                   38
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15230
_journal_page_last               15239
_journal_paper_doi               10.1021/jacs.9b07062
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety
'0.55(C27 H43 N3 Si3 V), 0.45(C27 H44 N3 Si3 V)'
_chemical_formula_sum            'C27 H43.44 N3 Si3 V'
_chemical_formula_weight         545.30
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2017/1
_cell_angle_alpha                115.202(4)
_cell_angle_beta                 96.239(4)
_cell_angle_gamma                96.088(4)
_cell_formula_units_Z            2
_cell_length_a                   10.8649(9)
_cell_length_b                   12.4225(10)
_cell_length_c                   13.0617(11)
_cell_measurement_reflns_used    9895
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      26.76
_cell_measurement_theta_min      2.36
_cell_volume                     1562.8(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2017/1 (Sheldrick, 2017)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0628
_diffrn_reflns_av_unetI/netI     0.0413
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            53879
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.025
_diffrn_reflns_theta_min         2.361
_exptl_absorpt_coefficient_mu    0.451
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6503
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_description       plate
_exptl_crystal_F_000             583
_exptl_crystal_size_max          0.460
_exptl_crystal_size_mid          0.350
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.531
_refine_diff_density_min         -0.480
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     485
_refine_ls_number_reflns         5523
_refine_ls_number_restraints     1272
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.1150
_refine_ls_R_factor_gt           0.0590
_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^)+(0.0264P)^2^+4.3347P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1173
_refine_ls_wR_factor_ref         0.1524
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3479
_reflns_number_total             5523
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b07062_si_003.cif
_cod_data_source_block           gz1110-2
_cod_database_code               4129019
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_min   0.819
_shelx_estimated_absorpt_t_max   0.973
_shelx_res_checksum              22283
_shelx_hkl_checksum              91853