Exploring the Roles of Counterions in Redox-active Viologen on Electrochromic Performance
Parashar, Ranjeev Kumar; Kandpal, Suchita; Kamal, Aditya; Bansal, Love; Gupta, Kirti; Kumar, Rajesh; Mondal, Prakash Chandra; Physical Chemistry Chemical Physics  (2025) –; doi:10.1039/D5CP02803E

data_7251240
_publ_section_title
;
 Exploring the Roles of Counterions in Redox-active Viologen on
 Electrochromic Performance
;
_journal_name_full               'Physical Chemistry Chemical Physics'
_journal_paper_doi               10.1039/D5CP02803E
_journal_year                    2025
_chemical_formula_moiety         'C24 H20 Cl2 N2, 2(B F4), [+ solvents]'
_chemical_formula_sum            'C24 H20 B2 Cl2 F8 N2'
_chemical_formula_weight         580.94
_space_group_crystal_system      orthorhombic
_space_group_IT_number           60
_space_group_name_Hall           '-P 2n 2ab'
_space_group_name_H-M_alt        'P b c n'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2024-01-01
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6226)
;
_audit_update_record
;
2024-01-01 deposited with the CCDC.	2025-11-07 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   35.6136(12)
_cell_length_b                   7.6852(3)
_cell_length_c                   9.4614(3)
_cell_measurement_reflns_used    9920
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.30
_cell_measurement_theta_min      2.71
_cell_volume                     2589.56(16)
_computing_cell_refinement       'SAINT V8.38A (Bruker, 2018)'
_computing_data_reduction        'SAINT V8.38A (Bruker, 2018)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'olex2.solve 1.3 (Bourhis et al., 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'Bruker SMART CCD 1K area detector'
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0388
_diffrn_reflns_av_unetI/netI     0.0177
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       47
_diffrn_reflns_limit_h_min       -47
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            39294
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.336
_diffrn_reflns_theta_min         2.711
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_current           1.0
_diffrn_source_power             0.05
_diffrn_source_target            Mo
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.326
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6781
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1204 before and 0.0528 after correction.
The Ratio of minimum to maximum transmission is 0.9093.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear yellowish red'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   yellowish
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.490
_exptl_crystal_description       needle
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.307
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         3225
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0407
_refine_ls_R_factor_gt           0.0344
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0467P)^2^+1.4973P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0928
_refine_ls_wR_factor_ref         0.0992
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2813
_reflns_number_total             3225
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cp02803e2.cif
_cod_data_source_block           2janc_a
_cod_database_code               7251240
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.965
_shelx_estimated_absorpt_t_min   0.900
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C6(H6A,H6B)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C11(H11), C5(H5), C1(H1), C12(H12), C9(H9), C4(H4), C8(H8)
;
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_olex2_submission_special_instructions 'No special instructions were received'