Probing semiconductivity in crystals of stable semiquinone radicals: organic salts of 5,6-dichloro-2,3-dicyanosemiquinone (DDQ) radical anions
Molčanov, Krešimir; Stalke, Dietmar; Šantić, Ana; Demeshko, Serhiy; Stilinović, Vladimir; Mou, Zhongyu; Kertesz, Miklos; Kojić-Prodić, Biserka; CrystEngComm 20 (2018) 1862–; doi:10.1039/C7CE02146A

data_7230155
_publ_section_title
;
 Probing semiconductivity in crystals of stable semiquinone radicals:
 organic salts of 5,6-dichloro-2,3-dicyanosemiquinone (DDQ) radical anions
;
_journal_issue                   13
_journal_name_full               CrystEngComm
_journal_page_first              1862
_journal_paper_doi               10.1039/C7CE02146A
_journal_volume                  20
_journal_year                    2018
_chemical_formula_moiety         'C8 Cl2 N2 O2, C7 H10 N'
_chemical_formula_sum            'C15 H10 Cl2 N3 O2'
_chemical_formula_weight         335.17
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_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   geom
_audit_creation_date             2018-01-29T13:55:37-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2018-02-12 deposited with the CCDC.
2018-02-13 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 94.3920(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.85120(10)
_cell_length_b                   11.09170(10)
_cell_length_c                   19.1460(2)
_cell_measurement_reflns_used    9148
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      76.346
_cell_measurement_theta_min      4.614
_cell_volume                     1450.66(3)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2017/1 (Sheldrick, 2017)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.4323
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Xcalibur, Ruby, Nova'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_unetI/netI     0.0402
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            12662
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.988
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         76.436
_diffrn_reflns_theta_min         4.611
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    4.126
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.38497
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
        Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.535
_exptl_crystal_description       rod
_exptl_crystal_F_000             684
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.928
_refine_diff_density_min         -0.47
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         3012
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0456
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0564P)^2^+2.2559P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.118
_reflns_number_gt                2926
_reflns_number_total             3012
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce02146a2.cif
_cod_data_source_block           ddq_2pic_100k
_cod_depositor_comments
'Adding full bibliography for 7230151--7230160.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7230155