Remarkable fluorescence change based on the protonation-deprotonation control in organic crystals
Jibo Zhang; Jinlong Chen; Bin Xu; Lijuan Wang; Suqian Ma; Yujie Dong; Bao Li; Ling Ye; Wenjing Tian; Chem.Commun. 49 (2013) 3878–; doi:10.1039/c3cc41171k

data_7109154
_publ_section_title
;
 Remarkable fluorescence change based on the protonation-deprotonation
 control in organic crystals
;
_journal_name_full               Chem.Commun.
_journal_page_first              3878
_journal_paper_doi               10.1039/c3cc41171k
_journal_volume                  49
_journal_year                    2013
_chemical_formula_moiety         'C28 H20 N2'
_chemical_formula_sum            'C28 H20 N2'
_chemical_formula_weight         384.46
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.26(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.3295(15)
_cell_length_b                   6.3418(13)
_cell_length_c                   21.422(4)
_cell_measurement_reflns_used    5852
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.54
_cell_measurement_theta_min      3.34
_cell_volume                     995.5(3)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       'RAPID-AUTO (Rigaku Corporation, 1998)'
_computing_data_reduction
'CrystalStructure (Rigaku/MSC and Rigaku Corporation, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       '\w scans'
_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  0.0336
_diffrn_reflns_av_unetI/netI     0.0294
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            9378
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.33
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9862
_exptl_absorpt_correction_T_min  0.9710
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             404
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.131
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2283
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0623
_refine_ls_R_factor_gt           0.0434
_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^)+(0.0623P)^2^+0.1254P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1109
_refine_ls_wR_factor_ref         0.1219
_reflns_number_gt                1683
_reflns_number_total             2283
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc41171k.txt
_cod_data_source_block           dyj-15
_cod_original_cell_volume        995.5(4)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7109154