Intra- and intermolecular H-bonds and π-π stacking driven organization of a triazine-based room temperature phosphorescent emitter.
Malpicci, Daniele; Lucenti, Elena; Zecchinello, Luca; Marinotto, Daniele; Cariati, Elena; Forni, Alessandra; Physical chemistry chemical physics : PCCP 28 (2026) 3016–3022; doi:10.1039/d5cp03691g

data_7251710
_publ_section_title
;
 Intra- and intermolecular H-bonds and &#x3c0;-&#x3c0; stacking driven
 organization of a triazine-based room temperature phosphorescent emitter.
;
_journal_issue                   4
_journal_name_full               'Physical chemistry chemical physics : PCCP'
_journal_page_first              3016
_journal_page_last               3022
_journal_paper_doi               10.1039/d5cp03691g
_journal_volume                  28
_journal_year                    2026
_chemical_formula_moiety         'C14 H10 N7, N O3, H2 O'
_chemical_formula_sum            'C14 H12 N8 O4'
_chemical_formula_weight         356.32
_chemical_name_systematic
;
2-(triimidazo[1,2-a:1',2'-c:1'',2''-e][1,3,5]triazin-3-yl)pyridin-1-ium
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2024-11-08 deposited with the CCDC.	2025-12-18 downloaded from the CCDC.
;
_cell_angle_alpha                97.546(2)
_cell_angle_beta                 92.942(2)
_cell_angle_gamma                97.561(2)
_cell_formula_units_Z            2
_cell_length_a                   6.05600(10)
_cell_length_b                   7.0511(2)
_cell_length_c                   17.9759(4)
_cell_measurement_reflns_used    5485
_cell_measurement_temperature    299(1)
_cell_measurement_theta_max      77.7230
_cell_measurement_theta_min      4.9750
_cell_volume                     752.49(3)
_computing_cell_refinement       'CrysAlisPro 1.171.42.93a (Rigaku OD, 2023)'
_computing_data_collection       'CrysAlisPro 1.171.42.93a (Rigaku OD, 2023)'
_computing_data_reduction        'CrysAlisPro 1.171.42.93a (Rigaku OD, 2023)'
_computing_molecular_graphics    'ORTEP III ( Burnett&Johnson, 1996)'
_computing_publication_material  'SHELXL-2019/3,PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL-2019/3 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_environment      air
_diffrn_ambient_temperature      299(1)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0374
_diffrn_reflns_av_unetI/netI     0.0406
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.974
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            9392
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.974
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         80.101
_diffrn_reflns_theta_min         4.976
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'PhotonJet (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    1.028
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.81487
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.113a (Rigaku Oxford Diffraction, 2024)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.573
_exptl_crystal_density_method    none
_exptl_crystal_description       plate
_exptl_crystal_F_000             368
_exptl_crystal_preparation       Luminescent
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile/dichloromethane/methanolin 10/5/5 volume ratio'
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.331
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.051
_refine_ls_extinction_coef       0.0032(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2019/2 (Sheldrick 2019)'
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         3191
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0540
_refine_ls_R_factor_gt           0.0489
_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^)+(0.0820P)^2^+0.1345P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1390
_refine_ls_wR_factor_ref         0.1445
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2745
_reflns_number_total             3191
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cp03691g2.cif
_cod_data_source_block           TT-2PyH+NO3-RT
_cod_database_code               7251710
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_min   0.821
_shelx_estimated_absorpt_t_max   0.950
_oxdiff_exptl_absorpt_empirical_full_min 0.527
_oxdiff_exptl_absorpt_empirical_full_max 1.498
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              194