Study of influence of anion nature on crystal packing features and feasibility of [2 + 2] photocycloaddition reaction in protonated forms of dimethoxystyrylheterocycles
Kuzmina, Lyudmila G.; Vedernikov, Artem I.; Sazonov, Sergey K.; Aleksandrova, Nadezhda A.; Alfimov, Michael V.; Gromov, Sergey P.; CrystEngComm  (2026) –; doi:10.1039/D5CE01173F

data_7251629
_publ_section_title
;
 Study of the influence of anion nature on crystal packing features and
 feasibility of [2 + 2] photocycloaddition reaction in protonated forms of
 dimethoxystyrylheterocycles
;
_journal_issue                   16
_journal_name_full               CrystEngComm
_journal_page_first              2560
_journal_page_last               2577
_journal_paper_doi               10.1039/D5CE01173F
_journal_volume                  28
_journal_year                    2026
_chemical_formula_moiety
'1.49(C17 H16 N O2 S), 0.255(C34 H32 N2 O4 S2), 2(C7 H7 O3 S)'
_chemical_formula_sum            'C24 H23 N O5 S2'
_chemical_formula_weight         469.55
_chemical_name_systematic
'2-[(E)-2-(3,4-dimethoxyphenyl)vinyl]-1,3-benzothiazol-3-ium 4-methylbenzenesulfonate / 2,2'-[2-c,4-t-bis(3,4-dimethoxyphenyl)cyclobutane-1-r,3-t-diyl]bis-1,3-benzothiazol-3-ium bis(4-methylbenzenesulfonate)'
_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'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2025-10-10 deposited with the CCDC.	2026-02-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.064(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   7.1640(7)
_cell_length_b                   26.078(3)
_cell_length_c                   23.533(2)
_cell_measurement_reflns_used    3635
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.977
_cell_measurement_theta_min      2.345
_cell_volume                     4353.0(8)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'D8 Venture'
_diffrn_measurement_method       /W
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1519
_diffrn_reflns_av_unetI/netI     0.1156
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            51484
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.436
_diffrn_reflns_theta_min         1.915
_exptl_absorpt_coefficient_mu    0.282
_exptl_absorpt_correction_T_max  0.9705
_exptl_absorpt_correction_T_min  0.7696
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.433
_exptl_crystal_description       needle
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.364
_refine_diff_density_min         -0.451
_refine_diff_density_rms         0.071
_refine_ls_extinction_coef       0.0015(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     768
_refine_ls_number_reflns         8887
_refine_ls_number_restraints     203
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1567
_refine_ls_R_factor_gt           0.0709
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0539P)^2^+3.3905P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1338
_refine_ls_wR_factor_ref         0.1682
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4686
_reflns_number_total             8887
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ce01173f2.cif
_cod_data_source_block           ir
_cod_depositor_comments
'Adding full bibliography for 7251618--7251632.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7251629
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.967
_shelx_estimated_absorpt_t_max   0.997
_shelx_res_checksum              46877