Reactions of Large Tetraaza-N,N'-dihydroacenes: Formation of Unexpected Adducts and an Unstable Tetraazahexacene
Jens U. Engelhart; Benjamin D. Lindner; Olena Tverskoy; Manuel Schaffroth; Frank Rominger; Uwe H. F. Bunz; Journal of Organic Chemistry 78 (2013) 1249–1253; doi:10.1021/jo3024544

data_4027908
_publ_contact_author_address
;
        Organisch-Chemisches Institut
        Ruprecht-Karls-Universit\"at Heidelberg
        Im Neuenheimer Feld 270
        D-69120 Heidelberg
        Germany
;
_publ_contact_author_email       uwe.bunz@oci.uni-heidelberg.de
_publ_contact_author_fax         '049 6221 54- 8404'
_publ_contact_author_name        'Bunz, Uwe H. F.'
_publ_contact_author_phone       '049 6221 54- 8401'
_publ_section_title
;
 Reactions of Large Tetraaza-N,N'-dihydroacenes: Formation of Unexpected
 Adducts and an Unstable Tetraazahexacene
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              1249
_journal_page_last               1253
_journal_paper_doi               10.1021/jo3024544
_journal_volume                  78
_journal_year                    2013
_chemical_formula_sum            'C48 H56 N4 Si2'
_chemical_formula_weight         745.15
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
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_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
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_cell_angle_beta                 94.672(1)
_cell_angle_gamma                95.417(1)
_cell_formula_units_Z            2
_cell_length_a                   7.8787(1)
_cell_length_b                   12.8918(1)
_cell_length_c                   21.5552(2)
_cell_measurement_reflns_used    6845
_cell_measurement_temperature    200(2)
_cell_volume                     2166.86(4)
_computing_cell_refinement       'Bruker SAINT'
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       '\w 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  0.0703
_diffrn_reflns_av_sigmaI/netI    0.0880
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            19178
_diffrn_reflns_theta_full        25.66
_diffrn_reflns_theta_max         25.66
_diffrn_reflns_theta_min         1.59
_exptl_absorpt_coefficient_mu    0.119
_exptl_absorpt_correction_T_max  0.9929
_exptl_absorpt_correction_T_min  0.8786
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Sheldrick, G. M. (2008). <i>SADABS</i>. University of G\"ottingen, Germany.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.142
_exptl_crystal_description       polyhedron
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_exptl_crystal_size_max          1.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.299
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     515
_refine_ls_number_reflns         8188
_refine_ls_number_restraints     251
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.1070
_refine_ls_R_factor_gt           0.0607
_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^)+(0.0688P)^2^+0.5883P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1424
_refine_ls_wR_factor_ref         0.1668
_reflns_number_gt                5165
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_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo3024544_si_001_2.cif
_cod_data_source_block           bu8
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