A novel Kolbe reaction pathway for a selective one- and two-electron reduction of azo compounds.
Fu, Wen-Fu; Li, Huifang-Jie; Wang, De-Hui; Zhou, Liang-Jun; Li, Li; Gan, Xin; Xu, Quan-Qing; Song, Hai-Bin; Chemical communications (Cambridge, England) 34 (2009) 5524–5526; doi:10.1039/b906910k

data_7104724
_publ_section_title
;
 A novel Kolbe reaction pathway for a selective one- and two-electron
 reduction of azo compounds.
;
_journal_issue                   37
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5524
_journal_page_last               5526
_journal_paper_doi               10.1039/b906910k
_journal_volume                  34
_journal_year                    2009
_chemical_formula_sum            'C20 H18 N6'
_chemical_formula_weight         342.40
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 96.298(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.017(4)
_cell_length_b                   10.788(6)
_cell_length_c                   10.389(6)
_cell_measurement_reflns_used    936
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.169
_cell_measurement_theta_min      2.731
_cell_volume                     893.0(9)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0596
_diffrn_reflns_av_sigmaI/netI    0.0614
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            4487
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.73
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  0.9802
_exptl_absorpt_correction_T_min  0.9564
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.499
_refine_diff_density_min         -0.141
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1575
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.1191
_refine_ls_R_factor_gt           0.0587
_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^)+(0.0850P)^2^+0.3788P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1536
_refine_ls_wR_factor_ref         0.2002
_reflns_number_gt                804
_reflns_number_total             1575
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b906910k.txt
_cod_data_source_block           061203a
_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      P2(1)/n
_cod_database_code               7104724