Dinuclear Triazole-Derived Janus-Type N-Heterocyclic Carbene Complexes of Palladium: Syntheses, Isomerizations, and Catalytic Studies toward Direct C5-Arylation of Imidazoles
Guo, Shuai; Huynh, Han Vinh; Organometallics 33 (2014) 2004–; doi:10.1021/om500139b

data_4083014
_publ_section_title
;
 Dinuclear Triazole-Derived Janus-Type N-Heterocyclic Carbene Complexes of
 Palladium: Syntheses, Isomerizations, and Catalytic Studies toward Direct
 C5-Arylation of Imidazoles
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              2004
_journal_paper_doi               10.1021/om500139b
_journal_volume                  33
_journal_year                    2014
_chemical_formula_sum            'C22 H22 Br2 N3 P Pd'
_chemical_formula_weight         625.62
_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                 92.747(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8629(8)
_cell_length_b                   7.5919(8)
_cell_length_c                   37.124(4)
_cell_measurement_reflns_used    855
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      22.85
_cell_measurement_theta_min      2.77
_cell_volume                     2213.5(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0694
_diffrn_reflns_av_sigmaI/netI    0.0789
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -48
_diffrn_reflns_number            15300
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    4.535
_exptl_absorpt_correction_T_max  0.7898
_exptl_absorpt_correction_T_min  0.5652
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs. (Sheldrick 2008)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.877
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Thin_Plate
_exptl_crystal_F_000             1224
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.950
_refine_diff_density_min         -0.685
_refine_diff_density_rms         0.165
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         5071
_refine_ls_number_restraints     41
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0745
_refine_ls_R_factor_gt           0.0494
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0341P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0918
_refine_ls_wR_factor_ref         0.0997
_reflns_number_gt                3835
_reflns_number_total             5071
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om500139b_si_001.cif
_cod_data_source_block           d273
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 4083012--4083014.cif.

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'Not Measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        2213.6(4)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4083014