From Bis(silylene) and Bis(germylene) Pincer-Type Nickel(II) Complexes to Isolable Intermediates of the Nickel-Catalyzed Sonogashira Cross-Coupling Reaction
Daniel Gallego; Andreas Brück; Elisabeth Irran; Florian Meier; Martin Kaupp; Matthias Driess; John F. Hartwig; Journal of the American Chemical Society 135 (2013) 15617–15626; doi:10.1021/ja408137t

data_4120941
_publ_section_title
;
 From Bis(silylene) and Bis(germylene) Pincer-Type Nickel(II) Complexes to
 Isolable Intermediates of the Nickel-Catalyzed Sonogashira Cross-Coupling
 Reaction
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15617
_journal_page_last               15626
_journal_paper_doi               10.1021/ja408137t
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C51 H73 Br Ge2 N4 Ni O2'
_chemical_formula_weight         1057.93
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 97.257(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.1417(3)
_cell_length_b                   22.4188(5)
_cell_length_c                   26.2145(8)
_cell_measurement_reflns_used    6635
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      32.5856
_cell_measurement_theta_min      3.4129
_cell_volume                     5329.5(3)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur S Sapphire'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) x-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0507
_diffrn_reflns_av_sigmaI/netI    0.0520
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            35241
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.42
_exptl_absorpt_coefficient_mu    2.260
_exptl_absorpt_correction_T_max  0.9353
_exptl_absorpt_correction_T_min  0.5603
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.318
_exptl_crystal_description       rod
_exptl_crystal_F_000             2200
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.940
_refine_diff_density_min         -0.563
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     594
_refine_ls_number_reflns         9362
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0661
_refine_ls_R_factor_gt           0.0462
_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^)+(0.0399P)^2^+1.7418P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0871
_refine_ls_wR_factor_ref         0.0932
_reflns_number_gt                7419
_reflns_number_total             9362
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja408137t_si_008.cif
_cod_data_source_block           p21n
_cod_database_code               4120941