Prolonging the lifetime of ultralong organic phosphorescence through dihydrogen bonding
Gu, Long; Shi, Huifang; Miao, Chunyang; Wu, Qi; Cheng, Zhichao; Cai, Suzhi; Gu, Mingxing; Ma, Chaoqun; Yao, Wei; Gao, Yaru; An, Zhongfu; Huang, Wei; Journal of Materials Chemistry C 6 (2018) 226–; doi:10.1039/C7TC04452F

data_7236970
_publ_section_title
;
 Prolonging the lifetime of ultralong organic phosphorescence through
 dihydrogen bonding
;
_journal_issue                   2
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              226
_journal_paper_doi               10.1039/C7TC04452F
_journal_volume                  6
_journal_year                    2018
_chemical_formula_sum            'C29 H21 N5 O'
_chemical_formula_weight         455.51
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-04-05 deposited with the CCDC.
2017-11-22 downloaded from the CCDC.
;
_cell_angle_alpha                72.721(5)
_cell_angle_beta                 84.178(6)
_cell_angle_gamma                77.936(5)
_cell_formula_units_Z            2
_cell_length_a                   7.661(3)
_cell_length_b                   10.946(5)
_cell_length_c                   14.260(6)
_cell_measurement_reflns_used    180
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      0.991
_cell_measurement_theta_min      0.990
_cell_volume                     1115.6(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  bruker
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0260
_diffrn_reflns_av_sigmaI/netI    0.0710
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5451
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.50
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.9915
_exptl_absorpt_correction_T_min  0.9898
_exptl_crystal_colour            colourness
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle-shape
_exptl_crystal_F_000             476
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.630
_refine_diff_density_min         -0.642
_refine_diff_density_rms         0.216
_refine_ls_extinction_coef       0.22(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.204
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     318
_refine_ls_number_reflns         3791
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.204
_refine_ls_R_factor_all          0.1318
_refine_ls_R_factor_gt           0.0999
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2999
_refine_ls_wR_factor_ref         0.3365
_reflns_number_gt                2459
_reflns_number_total             3791
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7tc04452f5.cif
_cod_data_source_block           dczc2h57_0m
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7236970