N-Fused quinoxalines and benzoquinoxalines as attractive emitters for organic light emitting diodes
Benjamin D. Lindner; Yexiang Zhang; Stefan Hofle; Nancy Berger; Claudia Teusch; Malte Jesper; Kenneth I. Hardcastle; Xuhong Qian; Uli Lemmer; Alexander Colsmann; Uwe H. F. Bunz; Manuel Hamburger; Journal of Materials Chemistry C 1 (2013) 5718–5724; doi:10.1039/C3TC30828F

data_7233514
_publ_section_title
;
 N-Fused quinoxalines and benzoquinoxalines as attractive emitters for
 organic light emitting diodes
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              5718
_journal_page_last               5724
_journal_paper_doi               10.1039/C3TC30828F
_journal_volume                  1
_journal_year                    2013
_chemical_formula_sum            'C36 H52 N2 Si2'
_chemical_formula_weight         568.98
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 97.065(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.5474(8)
_cell_length_b                   14.9254(9)
_cell_length_c                   16.2869(10)
_cell_measurement_reflns_used    1960
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      62.02
_cell_measurement_theta_min      3.06
_cell_volume                     3509.5(4)
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.945
_diffrn_measured_fraction_theta_max 0.945
_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  0.0326
_diffrn_reflns_av_sigmaI/netI    0.0389
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18087
_diffrn_reflns_theta_full        24.55
_diffrn_reflns_theta_max         24.55
_diffrn_reflns_theta_min         1.41
_exptl_absorpt_coefficient_mu    0.126
_exptl_absorpt_correction_T_max  0.9912
_exptl_absorpt_correction_T_min  0.9656
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.077
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1240
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.762
_refine_diff_density_min         -0.554
_refine_diff_density_rms         0.054
_refine_ls_extinction_coef       0.0020(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.087
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     362
_refine_ls_number_reflns         5539
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0836
_refine_ls_R_factor_gt           0.0607
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0700P)^2^+3.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1509
_refine_ls_wR_factor_ref         0.1667
_reflns_number_gt                4101
_reflns_number_total             5539
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1000004.cif
_cod_data_source_block           PCOD1000004
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the built-in table derived from the
CIF Core dictionary named 'cif_core.dic' version 2.4.5 last updated
on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7233514