Pyridine N-oxides as ligands in Cu-catalyzed N-arylation of imidazoles in water.
Liang, Lei; Li, Zhengkai; Zhou, Xiangge; Organic letters 11 (2009) 3294–3297; doi:10.1021/ol9010773

data_1504006
_publ_section_title
;
 Pyridine N-oxides as ligands in Cu-catalyzed N-arylation of imidazoles in
 water.
;
_journal_issue                   15
_journal_name_full               'Organic letters'
_journal_page_first              3294
_journal_page_last               3297
_journal_paper_doi               10.1021/ol9010773
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C9 H9 N3'
_chemical_formula_weight         159.19
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/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            16
_cell_length_a                   16.9796(4)
_cell_length_b                   16.9796(4)
_cell_length_c                   11.4331(3)
_cell_measurement_reflns_used    3617
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.16
_cell_measurement_theta_min      2.15
_cell_volume                     3296.24(14)
_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      296(2)
_diffrn_measured_fraction_theta_full 0.948
_diffrn_measured_fraction_theta_max 0.948
_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
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_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            16508
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         2.15
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9744
_exptl_absorpt_correction_T_min  0.9604
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SAINT ver 7.34; Bruker SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1344
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.107
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         1813
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.0956
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0100P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0649
_refine_ls_wR_factor_ref         0.0717
_reflns_number_gt                865
_reflns_number_total             1813
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol9010773_si_002.cif
_cod_data_source_block           wy1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      I4(1)/a
_cod_database_code               1504006