Fluorination and chlorination effects on quinoxalineimides as an electron-deficient building block for n-channel organic semiconductors
Hasegawa, Tsukasa; Ashizawa, Minoru; Kawauchi, Susumu; Masunaga, Hiroyasu; Ohta, Noboru; Matsumoto, Hidetoshi; RSC Advances 9 (2019) 10807–; doi:10.1039/C9RA02413A

data_7232584
_publ_section_title
;
 Fluorination and chlorination effects on quinoxalineimides as an
 electron-deficient building block for n-channel organic semiconductors
;
_journal_issue                   19
_journal_name_full               'RSC Advances'
_journal_page_first              10807
_journal_paper_doi               10.1039/C9RA02413A
_journal_volume                  9
_journal_year                    2019
_chemical_formula_moiety         'C16 H13 Br2 F2 N3 O2'
_chemical_formula_sum            'C16 H13 Br2 F2 N3 O2'
_chemical_formula_weight         477.10
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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_update_record
;
2019-02-12 deposited with the CCDC.    2019-04-01 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 106.5690(10)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   13.5124(3)
_cell_length_b                   16.6954(3)
_cell_length_c                   7.74975(14)
_cell_measurement_reflns_used    10890
_cell_measurement_temperature    296
_cell_measurement_theta_max      68.20
_cell_measurement_theta_min      3.42
_cell_volume                     1675.71(6)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.3'
_computing_publication_material  'CrystalStructure 4.3 (Rigaku, 2018)'
_computing_structure_refinement  'SHELXL Version 2016/6 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.1330
_diffrn_reflns_av_unetI/netI     0.0818
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            19167
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        67.687
_diffrn_reflns_theta_max         68.242
_diffrn_reflns_theta_min         3.413
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    6.490
_exptl_absorpt_correction_T_max  0.523
_exptl_absorpt_correction_T_min  0.347
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            pale-yellow
_exptl_crystal_density_diffrn    1.891
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             936.00
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         1.38
_refine_diff_density_min         -0.82
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     226
_refine_ls_number_reflns         3054
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0535
_refine_ls_R_factor_gt           0.0508
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0692P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1224
_refine_ls_wR_factor_ref         0.1246
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2644
_reflns_number_total             3054
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c9ra02413a2.cif
_cod_data_source_block           sample3
_cod_database_code               7232584
_shelx_res_checksum              18304