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_1557859
_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             2018-05-24
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.02 svn.r3394 for OlexSys, GUI svn.r5324)
;
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_cell_angle_gamma                89.86(3)
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_cell_length_b                   11.970(13)
_cell_length_c                   14.614(14)
_cell_measurement_reflns_used    150
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      0.925
_cell_measurement_theta_min      0.911
_cell_volume                     681.8(12)
_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      297.2
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.983
_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
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_diffrn_reflns_av_R_equivalents  0.0334
_diffrn_reflns_av_unetI/netI     0.0568
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.983
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5958
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.983
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.071
_diffrn_reflns_theta_min         1.398
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    0.078
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_description       block
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_refine_ls_extinction_method     none
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_refine_ls_R_factor_all          0.1167
_refine_ls_R_factor_gt           0.0568
_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^)+(0.0618P)^2^+0.0268P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1177
_refine_ls_wR_factor_ref         0.1433
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1806
_reflns_number_total             3257
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp0c01762_si_002.cif
_cod_data_source_block           1
_cod_original_cell_volume        681.9(12)
_cod_database_code               1557859
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.926
_shelx_estimated_absorpt_t_min   0.744
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C00D(H00D), C00E(H00E), C00H(H00H), C00I(H00I), C00J(H00J), C00K(H00K),
 C006(H006), C008(H008)
;
_shelx_res_checksum              71914
_shelx_hkl_checksum              50027
_olex2_submission_special_instructions 'No special instructions were received'