An efficient synthesis of indolo[3,2-a]carbazoles via the novel acid catalyzed reaction of indoles and diaryl-1,2-diones
Nair, Vijay; Nandialath, Vidya; Abhilash, Keecherikunnel G.; Suresh, Eringathodi; Organic & Biomolecular Chemistry 6 (2008) 1738–1742; doi:10.1039/b803009j

data_7150918
_publ_section_title
;
 An efficient synthesis of indolo[3,2-a]carbazoles via the novel acid
 catalyzed reaction of indoles and diaryl-1,2-diones
;
_journal_issue                   10
_journal_name_full               'Organic &amp;  Biomolecular Chemistry'
_journal_page_first              1738
_journal_page_last               1742
_journal_paper_doi               10.1039/b803009j
_journal_volume                  6
_journal_year                    2008
_chemical_formula_sum            'C32 H24 N2'
_chemical_formula_weight         436.53
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                68.553(4)
_cell_angle_beta                 69.635(4)
_cell_angle_gamma                69.955(4)
_cell_formula_units_Z            2
_cell_length_a                   9.819(3)
_cell_length_b                   11.498(3)
_cell_length_c                   11.946(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1140.4(5)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'BRUKER SMART APEX CCD DIFFRACTOMETER'
_diffrn_measurement_method       'OMEGA-PHI SCAN'
_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  0.0295
_diffrn_reflns_av_sigmaI/netI    0.0410
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7966
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9912
_exptl_absorpt_correction_T_min  0.9583
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCKS
_exptl_crystal_F_000             460
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.206
_refine_diff_density_min         -0.149
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     309
_refine_ls_number_reflns         3975
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0761
_refine_ls_R_factor_gt           0.0591
_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^)+(0.0648P)^2^+0.3749P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1389
_refine_ls_wR_factor_ref         0.1482
_reflns_number_gt                3146
_reflns_number_total             3975
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b803009j.txt
_cod_data_source_block           38iinvm_(Compound_3)
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_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-1
_cod_database_code               7150918