Synthesis of Ladder-Type π-Conjugated Heteroacenes via Palladium-Catalyzed Double N-Arylation and Intramolecular O-Arylation
Keiko Kawaguchi; Koji Nakano; Kyoko Nozaki; Journal of Organic Chemistry 72 (2007) 5119–5128; doi:10.1021/jo070427p

data_4023974
_publ_section_title
;
 Synthesis of Ladder-Type \p-Conjugated Heteroacenes via
 Palladium-Catalyzed Double N-Arylation and
 Intramolecular O-Arylation
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5119
_journal_page_last               5128
_journal_paper_doi               10.1021/jo070427p
_journal_volume                  72
_journal_year                    2007
_chemical_formula_sum            'C18 H10 O2'
_chemical_formula_weight         258.26
_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                 97.723(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.802(11)
_cell_length_b                   5.824(5)
_cell_length_c                   7.345(6)
_cell_measurement_reflns_used    1662
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      27.4835
_cell_measurement_theta_min      3.8013
_cell_volume                     585.1(8)
_computing_cell_refinement       'RIGAKU CrystalClear'
_computing_data_collection       'RIGAKU CrystalClear'
_computing_data_reduction        'RIGAKU CrystalClear'
_computing_molecular_graphics    ORTEP-III
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      103(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'RIGAKU/MSC Meacury CCD'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0234
_diffrn_reflns_av_sigmaI/netI    0.0266
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4321
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.80
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9953
_exptl_absorpt_correction_T_min  0.9629
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.466
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Platelet
_exptl_crystal_F_000             268
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.096
_refine_diff_density_min         -0.132
_refine_diff_density_rms         0.030
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.126
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         1341
_refine_ls_number_restraints     138
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0422
_refine_ls_R_factor_gt           0.0316
_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^)+(0.0395P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0716
_refine_ls_wR_factor_ref         0.0760
_reflns_number_gt                1115
_reflns_number_total             1341
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo070427psi20070301_041537.cif
_cod_data_source_block           oacene_3
_cod_depositor_comments
;
The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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               4023974