Three-color polymorph-dependent luminescence: crystallographic analysis and theoretical study on excited-state intramolecular proton transfer (ESIPT) luminescence of cyano-substituted imidazo[1,2-a]pyridine
Mutai, Toshiki; Shono, Hideaki; Shigemitsu, Yasuhiro; Araki, Koji; CrystEngComm 16 (2014) 3890–; doi:10.1039/c3ce42627k

data_7214385
_publ_section_title
;
 Three-color polymorph-dependent luminescence: crystallographic analysis
 and theoretical study on excited-state intramolecular proton transfer
 (ESIPT) luminescence of cyano-substituted imidazo[1,2-a]pyridine
;
_journal_issue                   19
_journal_name_full               CrystEngComm
_journal_page_first              3890
_journal_paper_doi               10.1039/c3ce42627k
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C14 H9 N3 O'
_chemical_formula_sum            'C14 H9 N3 O'
_chemical_formula_weight         235.24
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 130.054(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.654(6)
_cell_length_b                   7.343(3)
_cell_length_c                   14.200(6)
_cell_measurement_reflns_used    8291
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.05
_cell_volume                     1089.8(8)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 14.7059
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       dtprofit.ref
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0261
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8291
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.21
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9906
_exptl_absorpt_correction_T_min  0.9631
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.434
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Platelet
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.293
_refine_diff_density_min         -0.197
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.097
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2487
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0416
_refine_ls_R_factor_gt           0.0334
_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^)+(0.0605P)^2^+0.0024P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0922
_refine_ls_wR_factor_ref         0.0963
_reflns_number_gt                2066
_reflns_number_total             2487
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce42627k2.cif
_cod_data_source_block           2_O
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7214385