Arrested Catalysis: Controlling Kumada Coupling Activity via a Redox-Active N-Heterocyclic Carbene
Andrew G. Tennyson; Vincent M. Lynch; Christopher W. Bielawski; Journal of the American Chemical Society 132 (2010) 9420–9429; doi:10.1021/ja102686u

data_4102652
_publ_section_title
;
 Arrested Catalysis: Controlling Kumada Coupling Activity via a
 Redox-Active N-Heterocyclic Carbene
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9420
_journal_page_last               9429
_journal_paper_doi               10.1021/ja102686u
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         '2 C29 H26 N2 O2, C5 H12, 2 Cl -1, Pt 2+'
_chemical_formula_sum            'C63 H64 Cl2 N4 O4 Pt'
_chemical_formula_weight         1207.17
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           68
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2a 2ac'
_symmetry_space_group_name_H-M   'C c c a :2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.708(6)
_cell_length_b                   27.671(12)
_cell_length_c                   16.028(7)
_cell_measurement_reflns_used    6727
_cell_measurement_temperature    233(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.0
_cell_volume                     6523(5)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    'XP SHELXTL/PC, Siemens Analytical'
_computing_structure_refinement  'XL SHELXTL/PC, Siemens Analytical'
_computing_structure_solution
;

SIR97 - Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C., 
Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R.
;
_diffrn_ambient_temperature      233(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku SCX-Mini with Mercury CCD'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0268
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3740
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.77
_exptl_absorpt_coefficient_mu    2.277
_exptl_absorpt_correction_T_max  0.58
_exptl_absorpt_correction_T_min  0.47
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Abscor. T. Higashi (2001).  The Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2456
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.732
_refine_diff_density_min         -0.780
_refine_diff_density_rms         0.096
_refine_ls_extinction_coef       0.00082(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.908
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     162
_refine_ls_number_reflns         3740
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.908
_refine_ls_R_factor_all          0.0604
_refine_ls_R_factor_gt           0.0534
_refine_ls_shift/su_max          0.030
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0290P)^2^+11.1284P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1263
_refine_ls_wR_factor_ref         0.1286
_reflns_number_gt                3220
_reflns_number_total             3740
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja102686u_si_004.cif
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      'C c c a'
_cod_database_code               4102652