Influence of organic cations on stacking of semiquinone radical anions
Molcanov, Kresimir; Milasinovic, Valentina; Ivic, Nives; Stilinović, Vladimir; Kolaric, Dinko; Kojic-Prodic, Biserka; CrystEngComm  (2019) –; doi:10.1039/C9CE00919A

data_7233724
_publ_section_title
;
 Influence of organic cations on stacking of semiquinone radical anions
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C9CE00919A
_journal_year                    2019
_chemical_formula_moiety         '2(C6 Br4 O2), 2(C1.50 O0.50), C6 H9 N2'
_chemical_formula_sum            'C21 H9 Br8 N2 O5'
_chemical_formula_weight         1008.50
_chemical_name_systematic
'N-methylpyridinium tetrabromosemiquinonate acetone solvate'
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2019-03-26T15:38:08-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2019-06-10 deposited with the CCDC.    2019-09-02 downloaded from the CCDC.
;
_cell_angle_alpha                91.145(6)
_cell_angle_beta                 91.064(5)
_cell_angle_gamma                92.337(5)
_cell_formula_units_Z            1
_cell_length_a                   3.7890(2)
_cell_length_b                   12.3018(9)
_cell_length_c                   13.8689(9)
_cell_measurement_reflns_used    3025
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      75.928
_cell_measurement_theta_min      3.574
_cell_volume                     645.66(7)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_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 0.985
_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  0.0371
_diffrn_reflns_av_unetI/netI     0.0533
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       3
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4871
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.985
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         76.246
_diffrn_reflns_theta_min         3.188
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    15.101
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.44844
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
        Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    2.594
_exptl_crystal_description       rod
_exptl_crystal_F_000             443
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetone'
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.683
_refine_diff_density_min         -0.802
_refine_diff_density_rms         0.158
_refine_ls_extinction_coef       0.0009(2)
_refine_ls_extinction_method     'SHELXL-2017/1 (Sheldrick 2017)'
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         2660
_refine_ls_number_restraints     31
_refine_ls_restrained_S_all      1.07
_refine_ls_R_factor_all          0.0373
_refine_ls_R_factor_gt           0.0344
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0538P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.094
_reflns_number_gt                2423
_reflns_number_total             2660
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ce00919a2.cif
_cod_data_source_block           br4q_4ampy_100k_2
_cod_database_code               7233724