Iron/acetic acid mediated synthesis of 6,7-dihydrodibenzo [b,j] [1,7] phenanthroline derivatives via intramolecular reductive cylization
Yao, Ching-Fa; R. R, Rajawinslin.; Ichake, Sachin S.; Kavala, Veerababurao; Gawande, Sachin D.; Huang, Yi-Hsiang; Kuo, Chun-Wei; RSC Adv.  (2015) –; doi:10.1039/C5RA06395G

data_7220707
_publ_section_title
;
 Iron/acetic acid mediated synthesis of 6,7-dihydrodibenzo [b,j] [1,7]
 phenanthroline derivatives via intramolecular reductive cylization
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA06395G
_journal_year                    2015
_chemical_formula_moiety         'C20 H14 N2'
_chemical_formula_sum            'C20 H14 N2'
_chemical_formula_weight         282.33
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-02-19 deposited with the CCDC.
2015-06-05 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.5670(10)
_cell_length_b                   11.716(3)
_cell_length_c                   26.496(7)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1417.7(6)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0965
_diffrn_reflns_av_sigmaI/netI    0.1203
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -2
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            8126
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.54
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.9977
_exptl_absorpt_correction_T_min  0.9501
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.66
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.345
_refine_diff_density_min         -0.461
_refine_diff_density_rms         0.123
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         2515
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.1344
_refine_ls_R_factor_gt           0.0701
_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^)+(0.1093P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1596
_refine_ls_wR_factor_ref         0.2262
_reflns_number_gt                1427
_reflns_number_total             2515
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra06395g2.cif
_cod_data_source_block           ch16265
_cod_database_code               7220707