Synthesis, structures, redox and photophysical properties of benzodifuran-functionalised pyrene and anthracene fluorophores.
Keller, Stephan; Yi, Chenyi; Li, Chen; Liu, Shi-Xia; Blum, Carmen; Frei, Gabriela; Sereda, Olha; Neels, Antonia; Wandlowski, Thomas; Decurtins, Silvio; Organic & biomolecular chemistry 9 (2011) 6410–6416; doi:10.1039/c1ob05778b

data_7151976
_publ_section_title
;
 Synthesis, structures, redox and photophysical properties of
 benzodifuran-functionalised pyrene and anthracene fluorophores.
;
_journal_issue                   18
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6410
_journal_page_last               6416
_journal_paper_doi               10.1039/c1ob05778b
_journal_volume                  9
_journal_year                    2011
_chemical_formula_moiety         'C68 H70 N4 O2'
_chemical_formula_sum            'C68 H70 N4 O2'
_chemical_formula_weight         975.28
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 105.631(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.7947(9)
_cell_length_b                   9.0999(6)
_cell_length_c                   22.2042(16)
_cell_measurement_reflns_used    4223
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.47
_cell_measurement_theta_min      2.74
_cell_volume                     2684.2(3)
_computing_cell_refinement       'X-Area V1.35'
_computing_data_collection       'X-Area V1.35 (Stoe & Cie, 2006)'
_computing_data_reduction        'X-RED32 V1.31 (Stoe & Cie, 2006)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'STOE IPDS-2'
_diffrn_measurement_method       'phi & 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  0.0867
_diffrn_reflns_av_sigmaI/netI    0.1344
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            15649
_diffrn_reflns_theta_full        25.64
_diffrn_reflns_theta_max         25.64
_diffrn_reflns_theta_min         1.53
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1044
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.518
_refine_diff_density_min         -1.017
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.860
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     304
_refine_ls_number_reflns         4982
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.860
_refine_ls_R_factor_all          0.1494
_refine_ls_R_factor_gt           0.0677
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0795P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1470
_refine_ls_wR_factor_ref         0.1723
_reflns_number_gt                2294
_reflns_number_total             4982
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            c1ob05778b.txt
_cod_data_source_block           complex2a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7151976