Synthesis of NHC Complexes by Oxidative Addition of 2-Chloro-N-methylbenzimidazole
Tim Kösterke; Tania Pape; F. Ekkehardt Hahn; Journal of the American Chemical Society 133 (2011) 2112–2115; doi:10.1021/ja110634h

data_4105660
_publ_section_title
;
 Synthesis of NHC Complexes by Oxidative Addition of
 2-Chloro-N-methylbenzimidazole
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2112
_journal_page_last               2115
_journal_paper_doi               10.1021/ja110634h
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C64 H56 Cl2 N6 O1.5 P2 Pt2'
_chemical_formula_weight         1456.17
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 106.3130(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.6422(7)
_cell_length_b                   12.4704(4)
_cell_length_c                   24.1515(8)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      22.5
_cell_measurement_theta_min      1
_cell_volume                     5966.7(3)
_computing_cell_refinement       'APEX2(Bruker AXS, 2007)'
_computing_data_collection       'APEX2(Bruker AXS, 2007)'
_computing_data_reduction        'SAINT,SADABS (Bruker AXS, 2007 )'
_computing_molecular_graphics
;
ORTEP3,L.J. Farrugia, J. Appl. Cryst. (1997) 30, 565
;
_computing_structure_refinement
;
SHELXL-97, G. M. Sheldrick, Acta Cryst. (2008) A64, 112-122
;
_computing_structure_solution
;
SHELXS-97 , G. M. Sheldrick, Acta Cryst. (2008) A64, 112-122
;
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 80
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'Omega and Phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0453
_diffrn_reflns_av_sigmaI/netI    0.0490
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            57985
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         1.03
_exptl_absorpt_coefficient_mu    4.875
_exptl_absorpt_correction_T_max  0.9088
_exptl_absorpt_correction_T_min  0.4741
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
 Corrections were done with the SADABS program, utilizing the none merged
 raw data obtained from the integration process. Integration and final cell
 refinement were done with SAINT.

 SADABS reports ratio of Tmin/Tmax = 0.655267   

;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.621
_exptl_crystal_description       'transparent plate'
_exptl_crystal_F_000             2856
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.537
_refine_diff_density_min         -0.700
_refine_diff_density_rms         0.178
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     725
_refine_ls_number_reflns         17351
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0544
_refine_ls_R_factor_gt           0.0348
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0524P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0867
_refine_ls_wR_factor_ref         0.0974
_reflns_number_gt                13450
_reflns_number_total             17351
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja110634h_si_005.cif
_cod_data_source_block           sad
_cod_original_formula_sum        'C64 H56 Cl2 N6 O1.50 P2 Pt2'
_cod_database_code               4105660