Mechanistic Characterization of (Xantphos)Ni(I)-Mediated Alkyl Bromide Activation: Oxidative Addition, Electron Transfer, or Halogen-Atom Abstraction.
Diccianni, Justin B.; Katigbak, Joseph; Hu, Chunhua; Diao, Tianning; Journal of the American Chemical Society 141 (2019) 1788–1796; doi:10.1021/jacs.8b13499

data_4128084
_publ_section_title
;
 Mechanistic Characterization of (Xantphos)Ni(I)-Mediated Alkyl Bromide
 Activation: Oxidative Addition, Electron Transfer, or Halogen-Atom
 Abstraction.
;
_journal_issue                   4
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1788
_journal_page_last               1796
_journal_paper_doi               10.1021/jacs.8b13499
_journal_volume                  141
_journal_year                    2019
_chemical_formula_sum            'C43 H59 Br Ni O1.35 P2'
_chemical_formula_weight         797.99
_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
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 115.5972(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.4842(6)
_cell_length_b                   23.5098(10)
_cell_length_c                   13.0495(6)
_cell_measurement_reflns_used    9984
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.86
_cell_measurement_theta_min      2.33
_cell_volume                     4007.5(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Diamond (Brakdenburg & Putz, 2014)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT (Sheldrick 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0678
_diffrn_reflns_av_unetI/netI     0.0459
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            78042
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.304
_diffrn_reflns_theta_min         1.559
_exptl_absorpt_coefficient_mu    1.594
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6811
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_description       block
_exptl_crystal_F_000             1683
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.360
_exptl_crystal_size_min          0.300
_refine_diff_density_max         0.654
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     477
_refine_ls_number_reflns         9964
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0558
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0370P)^2^+1.9670P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0844
_refine_ls_wR_factor_ref         0.0911
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7825
_reflns_number_total             9964
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b13499_si_005.cif
_cod_data_source_block           18tnd14h
_cod_database_code               4128084
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.568
_shelx_estimated_absorpt_t_max   0.646
_shelx_res_checksum              70683
_shelx_hkl_checksum              65648