Air-stable, convenient to handle Pd based PEPPSI (pyridine enhanced precatalyst preparation, stabilization and initiation) themed precatalysts of N/O-functionalized N-heterocyclic carbenes and its utility in Suzuki-Miyaura cross-coupling reaction.
Ray, Lipika; Shaikh, Mobin M.; Ghosh, Prasenjit; Dalton transactions (Cambridge, England : 2003)  (2007) 4546–4555; doi:10.1039/b706607d

data_7005886
_publ_section_title
;
 Air-stable, convenient to handle Pd based PEPPSI (pyridine enhanced
 precatalyst preparation, stabilization and initiation) themed
 precatalysts of N/O-functionalized N-heterocyclic carbenes and its
 utility in Suzuki-Miyaura cross-coupling reaction.
;
_journal_issue                   40
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4546
_journal_page_last               4555
_journal_paper_doi               10.1039/b706607d
_journal_year                    2007
_chemical_formula_sum            'C20 H25 Br2 N3 O Pd'
_chemical_formula_weight         589.65
_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                 102.569(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.9252(3)
_cell_length_b                   10.8313(3)
_cell_length_c                   16.0613(4)
_cell_measurement_reflns_used    11110
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      32.1955
_cell_measurement_theta_min      3.2012
_cell_volume                     2194.64(10)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 15.9948
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0272
_diffrn_reflns_av_sigmaI/netI    0.0219
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            15160
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.21
_exptl_absorpt_coefficient_mu    4.501
_exptl_absorpt_correction_T_max  0.3655
_exptl_absorpt_correction_T_min  0.3018
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.5 (release 28-08-2006 CrysAlis171 .NET)
(compiled Aug 28 2006,13:05:05)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.785
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1160
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.28
_refine_diff_density_max         2.825
_refine_diff_density_min         -2.134
_refine_diff_density_rms         0.213
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.169
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         3840
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.169
_refine_ls_R_factor_all          0.0802
_refine_ls_R_factor_gt           0.0682
_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^)+(0.1298P)^2^+18.3588P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2190
_refine_ls_wR_factor_ref         0.2319
_reflns_number_gt                3024
_reflns_number_total             3840
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b706607d.txt
_cod_data_source_block           pg058
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7005886