Solution processable benzooxadiazole and benzothiadiazole based d-a-d molecules with chalcogenophene: field effect transistor study and structure property relationship.
Pati, Palas Baran; Senanayak, Satyaprasad P.; Narayan, K. S.; Zade, Sanjio S.; ACS applied materials & interfaces 5 (2013) 12460–12468; doi:10.1021/am403559a

data_4508614
_publ_section_title
;
 Solution processable benzooxadiazole and benzothiadiazole based d-a-d
 molecules with chalcogenophene: field effect transistor study and
 structure property relationship.
;
_journal_issue                   23
_journal_name_full               'ACS applied materials &amp; interfaces'
_journal_page_first              12460
_journal_page_last               12468
_journal_paper_doi               10.1021/am403559a
_journal_volume                  5
_journal_year                    2013
_chemical_formula_moiety         'C14 H8 N2 O Se2'
_chemical_formula_sum            'C14 H8 N2 O Se2'
_chemical_formula_weight         378.14
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.874(5)
_cell_length_b                   5.1023(12)
_cell_length_c                   12.693(3)
_cell_measurement_reflns_used    1501
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      20.24
_cell_measurement_theta_min      2.60
_cell_volume                     1287.1(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_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  0.0892
_diffrn_reflns_av_sigmaI/netI    0.0620
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8477
_diffrn_reflns_theta_full        23.61
_diffrn_reflns_theta_max         23.61
_diffrn_reflns_theta_min         2.05
_exptl_absorpt_coefficient_mu    5.736
_exptl_absorpt_correction_T_max  0.318
_exptl_absorpt_correction_T_min  0.245
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'sadabs, bruker, 2008'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.952
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.073
_refine_diff_density_min         -0.489
_refine_diff_density_rms         0.108
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.44(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         1906
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0790
_refine_ls_R_factor_gt           0.0505
_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^)+(0.0792P)^2^+0.6834P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1274
_refine_ls_wR_factor_ref         0.1450
_reflns_number_gt                1390
_reflns_number_total             1938
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            am403559a_si_002.cif
_cod_data_source_block           sos_5
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               4508614