Cyclopentadithiophene-Based Organic Semiconductors: Effect of Fluorinated Substituents on Electrochemical and Charge Transport Properties
Reddy, J. Sreedhar; Kale, Tejaswini; Balaji, Ganapathy; Chandrasekaran, A.; Thayumanavan, S.; The Journal of Physical Chemistry Letters 2 (2011) 648–; doi:10.1021/jz200126s

data_8000075
_publ_section_title
;
 Cyclopentadithiophene-Based Organic Semiconductors: Effect of Fluorinated
 Substituents on Electrochemical and Charge Transport Properties
;
_journal_issue                   6
_journal_name_full               'The Journal of Physical Chemistry Letters'
_journal_page_first              648
_journal_paper_doi               10.1021/jz200126s
_journal_volume                  2
_journal_year                    2011
_chemical_formula_sum            'C21 H12 O S2'
_chemical_formula_weight         344.43
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/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                 91.0088(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.9741(4)
_cell_length_b                   6.4960(2)
_cell_length_c                   7.1152(2)
_cell_measurement_temperature    293(2)
_cell_volume                     784.43(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Nonius KappaCCD area detector'
_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  0.0120
_diffrn_reflns_av_sigmaI/netI    0.0198
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            2522
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         4.78
_exptl_absorpt_coefficient_mu    0.343
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            brownish-yellow
_exptl_crystal_density_diffrn    1.458
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.222
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     110
_refine_ls_number_reflns         1381
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0315
_refine_ls_R_factor_gt           0.0292
_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^)+(0.0359P)^2^+0.3276P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0769
_refine_ls_wR_factor_ref         0.0786
_reflns_number_gt                1279
_reflns_number_total             1381
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jz200126s_si_002.cif
_cod_data_source_block           js3
_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 
;
_cod_original_sg_symbol_H-M      P2/c
_cod_database_code               8000075