Novel chromophores from alternated pyridine-ethylenedioxythiophene unit oligomers: dramatic enhancement of photoluminescence properties in elongated derivatives.
Chevallier, Floris; Charlot, Marina; Katan, Claudine; Mongin, Florence; Blanchard-Desce, Mireille; Chemical communications (Cambridge, England) 34 (2009) 692–694; doi:10.1039/b815656e

data_7104172
_publ_section_title
;
 Novel chromophores from alternated pyridine-ethylenedioxythiophene
 unit oligomers: dramatic enhancement of photoluminescence properties
 in elongated derivatives.
;
_journal_issue                   6
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              692
_journal_page_last               694
_journal_paper_doi               10.1039/b815656e
_journal_volume                  34
_journal_year                    2009
_chemical_absolute_configuration unk
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C22 H16 N2 O4 S2'
_chemical_formula_sum            'C22 H16 N2 O4 S2'
_chemical_formula_weight         436.49
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      9
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2008-09-10T17:07:51-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90.604(6)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   49.259(5)
_cell_length_b                   4.9656(4)
_cell_length_c                   15.3119(13)
_cell_measurement_reflns_used    2234
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.7
_cell_measurement_theta_min      4.27
_cell_measurement_wavelength     0.71073
_cell_volume                     3745.1(6)
_computing_cell_refinement       'Bruker SMART, 2006'
_computing_data_collection       'Bruker SMART, 2006'
_computing_data_reduction        'Bruker SAINT, 2006'
_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    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.951
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0645
_diffrn_reflns_av_unetI/netI     0.098
_diffrn_reflns_limit_h_max       63
_diffrn_reflns_limit_h_min       -48
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            11164
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.62
_exptl_absorpt_coefficient_mu    0.320
_exptl_absorpt_correction_T_max  0.932
_exptl_absorpt_correction_T_min  0.836
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.548
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1808
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.44
_exptl_crystal_size_min          0.22
_refine_diff_density_max         1.006
_refine_diff_density_min         -0.713
_refine_diff_density_rms         0.118
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.03(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     541
_refine_ls_number_reflns         6033
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0842
_refine_ls_R_factor_gt           0.0724
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0992P)^2^+8.6775P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1789
_refine_ls_wR_factor_ref         0.1901
_reflns_number_gt                5081
_reflns_number_total             6033
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b815656e.txt
_cod_data_source_block           cpd6
_cod_database_code               7104172