One-Pot Synthesis of Linearly Fused N-Heterocyles from Their Angular Analogues and Studies of Their Redox and Electrochromic Properties
Mominul Sinan; Kumaresh Ghosh; Sreebrata Goswami; Journal of Organic Chemistry 75 (2010) 2065–2068; doi:10.1021/jo902432w

data_4025298
_publ_section_title
;
 One-Pot Synthesis of Linearly Fused N-Heterocyles from Their Angular
 Analogues and Studies of Their Redox and Electrochromic Properties
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2065
_journal_page_last               2068
_journal_paper_doi               10.1021/jo902432w
_journal_volume                  75
_journal_year                    2010
_chemical_formula_sum            'C18 H14 N4'
_chemical_formula_weight         286.33
_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                98.660(17)
_cell_angle_beta                 93.716(16)
_cell_angle_gamma                93.664(16)
_cell_formula_units_Z            2
_cell_length_a                   6.882(4)
_cell_length_b                   7.400(4)
_cell_length_c                   14.123(8)
_cell_measurement_reflns_used    703
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      20.42
_cell_measurement_theta_min      2.97
_cell_volume                     707.6(7)
_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      293(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.0714
_diffrn_reflns_av_sigmaI/netI    0.0635
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5297
_diffrn_reflns_theta_full        20.72
_diffrn_reflns_theta_max         20.72
_diffrn_reflns_theta_min         1.46
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9852
_exptl_absorpt_correction_T_min  0.9803
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1997)'
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.344
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             300
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.272
_refine_diff_density_min         -0.314
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   2.377
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         1438
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      2.377
_refine_ls_R_factor_all          0.1633
_refine_ls_R_factor_gt           0.1183
_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^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3970
_refine_ls_wR_factor_ref         0.4058
_reflns_number_gt                850
_reflns_number_total             1438
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo902432w_si_005.cif
_cod_data_source_block           ms49_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_H-M      'P -1 '
_cod_database_code               4025298