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_7234687
_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         'C25 H18 N2 O'
_chemical_formula_sum            'C25 H18 N2 O'
_chemical_formula_weight         362.41
_chemical_name_common            '6,8-Diphenyl HPIP'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 103.362(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.436(1)
_cell_length_b                   14.221(1)
_cell_length_c                   12.880(1)
_cell_measurement_reflns_used    18110
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      73.17
_cell_measurement_theta_min      4.35
_cell_volume                     1859.8(3)
_computing_cell_refinement       Scalepack
_computing_data_collection       'MacScience Xpress'
_computing_data_reduction        'Denzo and Scalepack'
_computing_molecular_graphics    maXus
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.932
_diffrn_measurement_device_type  'MacScience DIPLabo'
_diffrn_measurement_method       IP
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0156
_diffrn_reflns_av_unetI/netI     0.0205
_diffrn_reflns_Laue_measured_fraction_full 0.958
_diffrn_reflns_Laue_measured_fraction_max 0.932
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            5652
_diffrn_reflns_point_group_measured_fraction_full 0.958
_diffrn_reflns_point_group_measured_fraction_max 0.932
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         73.167
_diffrn_reflns_theta_min         4.354
_exptl_absorpt_coefficient_mu    0.626
_exptl_absorpt_correction_T_max  0.9136
_exptl_absorpt_correction_T_min  0.8760
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'abscor (MacScience Co. Ltd., 2000)'
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_description       prism
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.177
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.052
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.299
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         3475
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.299
_refine_ls_R_factor_all          0.1008
_refine_ls_R_factor_gt           0.0925
_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^)+(0.0295P)^2^+2.2261P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1794
_refine_ls_wR_factor_ref         0.1836
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                3139
_reflns_number_total             3475
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            J-Mater-Chem-C-2016-4-3599.cif
_cod_data_source_block           68Ph2
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7234687
_shelxl_version_number           2013-4
_shelx_res_checksum              55718
_shelx_hkl_checksum              32973