Facile base-free in situ generation and palladation of mesoionic and normal N-heterocyclic carbenes at ambient conditions.
Sureshbabu, Bemineni; Ramkumar, Venkatachalam; Sankararaman, Sethuraman; Dalton transactions (Cambridge, England : 2003) 43 (2014) 10710–10712; doi:10.1039/c4dt01112k

data_7031195
_publ_section_title
;
 Facile base-free in situ generation and palladation of mesoionic and
 normal N-heterocyclic carbenes at ambient conditions.
;
_journal_issue                   28
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10710
_journal_page_last               10712
_journal_paper_doi               10.1039/c4dt01112k
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C32 H28 I2 N6 Pd, 2(C2 H3 N)'
_chemical_formula_sum            'C36 H34 I2 N8 Pd'
_chemical_formula_weight         938.91
_chemical_name_systematic
;

 ?

;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 119.7150(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.6769(3)
_cell_length_b                   12.2264(2)
_cell_length_c                   18.2277(3)
_cell_measurement_reflns_used    7465
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      28.32
_cell_measurement_theta_min      2.51
_cell_volume                     3614.98(11)
_computing_cell_refinement       'APEX2 and SAINT (Bruker-Nonius, 2004)'
_computing_data_collection       'APEX2 (Bruker-Nonius, 2004)'
_computing_data_reduction        'SAINT and XPREP (Bruker-Nonius, 2004)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997) '
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEXII 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  0.0182
_diffrn_reflns_av_sigmaI/netI    0.0177
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10931
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    2.259
_exptl_absorpt_correction_T_max  0.7281
_exptl_absorpt_correction_T_min  0.6021
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker,2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.725
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Hexagonal
_exptl_crystal_F_000             1832
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.276
_refine_diff_density_min         -0.521
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     215
_refine_ls_number_reflns         3178
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0229
_refine_ls_R_factor_gt           0.0194
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0207P)^2^+4.3341P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0457
_refine_ls_wR_factor_ref         0.0478
_reflns_number_gt                2867
_reflns_number_total             3178
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4dt01112k2.cif
_cod_data_source_block           new
_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/RSC/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 7031193--7031196.cif.
;
_cod_original_cell_volume        3614.98(10)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7031195