Phosphine- and Pyridine-Functionalized N-Heterocyclic Carbene Methyl and Allyl Complexes of Palladium. Unexpected Regiospecificity of the Protonation Reaction of the Dimethyl Complexes
Andreas A. Danopoulos; Nikolaos Tsoureas; Stuart A. Macgregor; Christopher Smith; Organometallics 26 (2007) 253–263; doi:10.1021/om0608408

data_4063266
_publ_section_title
;
 Phosphine- and Pyridine-Functionalized N-Heterocyclic Carbene Methyl
 and Allyl Complexes of Palladium. Unexpected Regiospecificity of the
 Protonation Reaction of the Dimethyl Complexes
;
_journal_name_full               Organometallics
_journal_page_first              253
_journal_page_last               263
_journal_paper_doi               10.1021/om0608408
_journal_volume                  26
_journal_year                    2007
_chemical_formula_moiety         'C42 H52 N6 Pd'
_chemical_formula_sum            'C42 H52 N6 Pd'
_chemical_formula_weight         747.30
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 107.64(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.936(14)
_cell_length_b                   27.06(3)
_cell_length_c                   13.47(4)
_cell_measurement_reflns_used    6432
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      24.71
_cell_measurement_theta_min      2.91
_cell_volume                     3799(13)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material
;
PLATON (Spek, 2003)
ENCIFER (Allen, 2004)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'DIRDIF99 (Beurskens, 1999)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0674
_diffrn_reflns_av_sigmaI/netI    0.0503
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            33787
_diffrn_reflns_theta_full        24.75
_diffrn_reflns_theta_max         24.75
_diffrn_reflns_theta_min         2.99
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.526
_exptl_absorpt_correction_T_max  0.9591
_exptl_absorpt_correction_T_min  0.6371
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.307
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1568
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.454
_refine_diff_density_min         -0.572
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     452
_refine_ls_number_reflns         6436
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0507
_refine_ls_R_factor_gt           0.0363
_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^)+(0.0254P)^2^+3.6295P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0749
_refine_ls_wR_factor_ref         0.0798
_reflns_number_gt                5365
_reflns_number_total             6436
_reflns_threshold_expression     >2sigma(I)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4063266