Luminescence induced by strong cation–anion π–π interactions in crystals of viologen analogues
Gutov, Oleksii V.; Rusanov, Eduard B.; Kudryavtsev, Alexey A.; Garasevych, Sergey G.; Slobodyanyuk, Olexandr V.; Yashchuk, Valerii M.; Chernega, Alexander N.; CrystEngComm 13 (2011) 1373–; doi:10.1039/c0ce00191k

data_7205188
_publ_section_title
;
 Luminescence induced by strong cation--anion \p--\p interactions in
 crystals of viologen analogues
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              1373
_journal_paper_doi               10.1039/c0ce00191k
_journal_volume                  13
_journal_year                    2011
_chemical_formula_sum            'C24 H34 Cl2 N4 O7'
_chemical_formula_weight         561.45
_chemical_name_common
;
1,4-bis(2-(1-(2-amino-2-oxoethyl)-pyridinium-4-yl)vinyl)benzene dichloride
;
_chemical_name_systematic
;
1,4-bis(2-[1-(2-amino-2-oxoethyl)-pyridinium-4-yl]vinyl)benzene dichloride
;
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2009-08-13T13:54:02-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 103.635(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.0114(11)
_cell_length_b                   4.9005(4)
_cell_length_c                   31.062(2)
_cell_measurement_temperature    296(2)
_cell_volume                     2812.3(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0244
_diffrn_reflns_av_unetI/netI     0.0462
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -3
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            5044
_diffrn_reflns_theta_full        26.46
_diffrn_reflns_theta_max         26.46
_diffrn_reflns_theta_min         2.84
_exptl_absorpt_coefficient_mu    0.279
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.179
_refine_diff_density_min         -0.426
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     196
_refine_ls_number_reflns         2871
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1039
_refine_ls_R_factor_gt           0.0538
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0599P)^2^+2.0823P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1211
_refine_ls_wR_factor_ref         0.1467
_reflns_number_gt                1680
_reflns_number_total             2871
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0CE00191K.TXT
_cod_data_source_block           g10
_cod_original_cell_volume        2812.3(4)
_cod_database_code               7205188