The development of aryl-substituted 2-phenylimidazo[1,2-a]pyridines (PIP) with various colors of excited-state intramolecular proton transfer (ESIPT) luminescence in the solid state
Toshiki Mutai; Tatsuya Ohkawa; Hideaki Shono; Koji Araki; Journal of Materials Chemistry C 4 (2016) 3599–3606; doi:10.1039/C6TC00376A

data_7234685
_publ_section_title
;
 The development of aryl-substituted 2-phenylimidazo[1,2-a]pyridines (PIP)
 with various colors of excited-state intramolecular proton transfer
 (ESIPT) luminescence in the solid state
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              3599
_journal_page_last               3606
_journal_paper_doi               10.1039/C6TC00376A
_journal_volume                  4
_journal_year                    2016
_chemical_formula_moiety         'C21 H16 N2 O3'
_chemical_formula_sum            'C21 H16 N2 O3'
_chemical_formula_weight         344.36
_chemical_name_common            '6-p-Methoxycarbonylphenyl HPIP'
_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
_cell_angle_alpha                100.474(2)
_cell_angle_beta                 103.159(2)
_cell_angle_gamma                104.477(2)
_cell_formula_units_Z            4
_cell_length_a                   11.240(1)
_cell_length_b                   12.113(1)
_cell_length_c                   13.506(1)
_cell_measurement_reflns_used    17108
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      73.34
_cell_measurement_theta_min      3.47
_cell_volume                     1677.2(2)
_computing_cell_refinement       Scalepack
_computing_data_collection       'MacScience Xpress'
_computing_data_reduction        'Denzo and Scalepack'
_computing_molecular_graphics    maXus
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.923
_diffrn_measurement_device_type  'MacScience DIPLabo'
_diffrn_measurement_method       IP
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.046
_diffrn_reflns_av_sigmaI/netI    0.0298
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            17108
_diffrn_reflns_theta_full        69.98
_diffrn_reflns_theta_max         73.34
_diffrn_reflns_theta_min         3.47
_diffrn_standards_decay_%        NONE
_diffrn_standards_interval_count NONE
_diffrn_standards_interval_time  NONE
_diffrn_standards_number         NONE
_exptl_absorpt_coefficient_mu    0.753
_exptl_absorpt_correction_T_max  0.8516
_exptl_absorpt_correction_T_min  0.7834
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'abscor (MacScience Co. Ltd., 2000)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.364
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.240
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     473
_refine_ls_number_reflns         6199
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0805
_refine_ls_R_factor_gt           0.0729
_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^)+(0.0783P)^2^+0.9643P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1879
_refine_ls_wR_factor_ref         0.1948
_reflns_number_gt                5502
_reflns_number_total             6199
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            J-Mater-Chem-C-2016-4-3599.cif
_cod_data_source_block           6MeOCOPh
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7234685