Activating Intersystem Crossing and Aggregation Coupling by CN-Substitution for Efficient Organic Ultralong Room Temperature Phosphorescence
Yuan, Jie; Wang, Yongrong; Li, Ling; Wang, Shuang; Tang, Xingxing; Wang, Honglei; Li, Mingguang; Zheng, Chao; Chen, Runfeng; The Journal of Physical Chemistry C  (2020) –; doi:10.1021/acs.jpcc.0c01762

data_1557860
_publ_section_title
;
 Activating Intersystem Crossing and Aggregation Coupling by
 CN-Substitution for Efficient Organic Ultralong Room Temperature
 Phosphorescence
;
_journal_name_full               'The Journal of Physical Chemistry C'
_journal_paper_doi               10.1021/acs.jpcc.0c01762
_journal_year                    2020
_chemical_formula_moiety         'C8 H4 N2'
_chemical_formula_sum            'C8 H4 N2'
_chemical_formula_weight         128.13
_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   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-01-20
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.02 svn.r3394 for OlexSys, GUI svn.r5324)
;
_cell_angle_alpha                114.297(13)
_cell_angle_beta                 92.785(15)
_cell_angle_gamma                97.812(16)
_cell_formula_units_Z            1
_cell_length_a                   3.781(3)
_cell_length_b                   6.450(5)
_cell_length_c                   7.270(5)
_cell_measurement_reflns_used    150
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      0.959
_cell_measurement_theta_min      0.904
_cell_volume                     159.0(2)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.01
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.957
_diffrn_measured_fraction_theta_max 0.822
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX-II CCD'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0238
_diffrn_reflns_av_unetI/netI     0.0412
_diffrn_reflns_Laue_measured_fraction_full 0.957
_diffrn_reflns_Laue_measured_fraction_max 0.822
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            2056
_diffrn_reflns_point_group_measured_fraction_full 0.957
_diffrn_reflns_point_group_measured_fraction_max 0.822
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         37.902
_diffrn_reflns_theta_min         3.095
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    0.084
_exptl_crystal_density_diffrn    1.338
_exptl_crystal_description       block
_exptl_crystal_F_000             66
_exptl_crystal_size_max          2
_exptl_crystal_size_mid          1
_exptl_crystal_size_min          0.5
_refine_diff_density_max         0.468
_refine_diff_density_min         -0.302
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     46
_refine_ls_number_reflns         1414
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0550
_refine_ls_R_factor_gt           0.0503
_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^)+(0.0748P)^2^+0.0317P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1362
_refine_ls_wR_factor_ref         0.1415
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1282
_reflns_number_total             1414
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp0c01762_si_004.cif
_cod_data_source_block           1
_cod_original_cell_volume        159.02(19)
_cod_database_code               1557860
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.959
_shelx_estimated_absorpt_t_min   0.850
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C004(H004), C005(H005)
;
_shelx_res_checksum              66723
_shelx_hkl_checksum              64308
_olex2_submission_special_instructions 'No special instructions were received'