Synthesis, photophysics and molecular structures of luminescent 2,5-bis(phenylethynyl)thiophenes (BPETs)
Siddle, Jamie S.; Ward, Richard M.; Collings, Jonathan C.; Rutter, Simon R.; Porrés, Laurent; Applegarth, Lucas; Beeby, Andrew; Batsanov, Andrei S.; Thompson, Amber L.; Howard, Judith A. K.; Boucekkine, Abdou; Costuas, Karine; Halet, Jean-François; Marder, Todd B.; New Journal of Chemistry 31 (2007) 841–851; doi:10.1039/b701172e

data_7054171
_publ_section_title
;
 Synthesis, photophysics and molecular structures of luminescent
 2,5-bis(phenylethynyl)thiophenes (BPETs)
;
_journal_issue                   6
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              841
_journal_page_last               851
_journal_paper_doi               10.1039/b701172e
_journal_volume                  31
_journal_year                    2007
_chemical_formula_moiety         'C20 H2 F10 S'
_chemical_formula_sum            'C20 H2 F10 S'
_chemical_formula_weight         464.28
_chemical_melting_point          428(1)
_chemical_name_systematic
;
2,5-bis(pentafluorophenylethynyl)thiophene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.83(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.9212(7)
_cell_length_b                   31.274(4)
_cell_length_c                   11.3413(15)
_cell_measurement_reflns_used    7369
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.25
_cell_volume                     1708.4(4)
_computing_cell_refinement       'SAINT version 6.45A (Bruker, 2003)'
_computing_data_collection       'SMART version 5.049 (Bruker, 1998)'
_computing_data_reduction        'SAINT version 6.45A (Bruker, 2003)'
_computing_molecular_graphics    'SHELXTL version 6.14 (Bruker, 2003)'
_computing_publication_material  'SHELXTL version 6.14 (Bruker, 2003)'
_computing_structure_refinement  'SHELXTL version 6.14 (Bruker, 2003)'
_computing_structure_solution    'SHELXTL version 6.14 (Bruker, 2003)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Siemens SMART 1K CCD area detector'
_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  0.0387
_diffrn_reflns_av_sigmaI/netI    0.0340
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       40
_diffrn_reflns_limit_k_min       -40
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            16756
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.30
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.299
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.805
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.340
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     288
_refine_ls_number_reflns         3921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0652
_refine_ls_R_factor_gt           0.0474
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0423P)^2^+1.3509P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1028
_refine_ls_wR_factor_ref         0.1100
_reflns_number_gt                3129
_reflns_number_total             3921
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b701172e.txt
_cod_data_source_block           (2)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/n '
_cod_database_code               7054171