Tetraaryl pyrenes: photophysical properties, computational studies, crystal structures, and application in OLEDs
Tarek H. El-Assaad; Manuel Auer; Raul Castaneda; Kassem M. Hallal; Fadi M. Jradi; Lorenzo Mosca; Rony S. Khnayzer; Digambara Patra; Tatiana V. Timofeeva; Jean-Luc Bredas; Emil J. W. List-Kratochvil; Brigitte Wex; Bilal R. Kaafarani; Journal of Materials Chemistry C 4 (2016) 3041–3058; doi:10.1039/C5TC02849C

data_7234656
_publ_section_title
;
 Tetraaryl pyrenes: photophysical properties, computational studies,
 crystal structures, and application in OLEDs
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              3041
_journal_page_last               3058
_journal_paper_doi               10.1039/C5TC02849C
_journal_volume                  4
_journal_year                    2016
_chemical_formula_moiety         'C56 H58'
_chemical_formula_sum            'C56 H58'
_chemical_formula_weight         731.02
_chemical_name_systematic
'Pyrene, 1,3,6,8-tetrakis[4-(1,1-dimethylethyl)phenyl]-'
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2bc 2ac'
_space_group_name_H-M_alt        'P c a b'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.3292(18)
_cell_length_b                   14.816(2)
_cell_length_c                   23.194(3)
_cell_measurement_reflns_used    9855
_cell_measurement_temperature    100.15
_cell_measurement_theta_max      29.31
_cell_measurement_theta_min      2.23
_cell_volume                     4236.8(10)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0302
_diffrn_reflns_av_unetI/netI     0.0225
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            39697
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.00
_diffrn_reflns_theta_min         1.76
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.064
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6852
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2012/1 (Bruker,2012) was used for absorption correction.
wR2(int) was 0.0534 before and 0.0448 after correction.
The Ratio of minimum to maximum transmission is 0.9187.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   whiteish
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.146
_exptl_crystal_density_meas      .
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1576
_exptl_crystal_preparation       Luminescent
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: '
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.447
_refine_diff_density_min         -0.251
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         5632
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0610
_refine_ls_R_factor_gt           0.0485
_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^)+(0.0767P)^2^+1.3845P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1296
_refine_ls_wR_factor_ref         0.1366
_reflns_number_gt                4611
_reflns_number_total             5632
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            J-Mater-Chem-C-2016-4-3041.cif
_cod_data_source_block           the-ii-35g
_cod_original_cell_volume        4236.8(11)
_cod_database_code               7234656
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C4(H4), C7(H7), C8(H8), C2(H2), C14(H14), C16(H16), C10(H10), C13(H13),
 C17(H17), C12(H12), C11(H11)
2.b Idealised Me refined as rotating group:
 C25(H25A,H25B,H25C), C24(H24A,H24B,H24C), C18(H18A,H18B,H18C), C23(H23A,H23B,
 H23C), C20(H20A,H20B,H20C), C21(H21A,H21B,H21C)
;
_olex2_submission_special_instructions 'No special instructions were received'