ESIPT geometrical isomers with distinct mechanofluorochromism and intra/intermolecular H-bonding controlled tunable fluorescence
Gayathri, Parthasarathy; Ravi, Sasikala; Akshaya, K.; Karthikeyan, Subramanian; Pannipara, Mehboobali; Al-Sehemi, Abdullah G.; Moon, Dohyun; Anthony, Savarimuthu Philip; CrystEngComm  (2022) –; doi:10.1039/D2CE01210C

data_7245774
_publ_section_title
;
 ESIPT geometrical isomers with distinct mechanofluorochromism and
 intra/intermolecular H-bonding controlled tunable fluorescence
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D2CE01210C
_journal_year                    2022
_chemical_formula_moiety         'C20 H16 N2 O2'
_chemical_formula_sum            'C20 H16 N2 O2'
_chemical_formula_weight         316.35
_chemical_melting_point          465.15
_chemical_name_common
2-((E)-((E)-(2-hydroxybenzylidene)hydrazono)(phenyl)methyl)phenol
_chemical_name_systematic
2-((E)-((E)-(2-hydroxybenzylidene)hydrazono)(phenyl)methyl)phenol
_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   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2022-10-20 deposited with the CCDC.	2022-10-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.36(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.775(2)
_cell_length_b                   6.0690(12)
_cell_length_c                   24.422(5)
_cell_measurement_reflns_used    47542
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      33.548
_cell_measurement_theta_min      0.361
_cell_volume                     1596.6(5)
_computing_cell_refinement       '<i>HKL3000sm</i>(Otwinowski & Minor, 1997)'
_computing_data_collection
'<i>PAL BL2D-SMDC Program</i>(Shin et.al, 2016)'
_computing_data_reduction        '<i>HKL3000sm</i>(Otwinowski & Minor, 1997)'
_computing_molecular_graphics    '<i>DIAMOND 4</i>(Putz&Brandenburg, 2014)'
_computing_publication_material  '<i>publCIF</i>(Westrip, 2010)'
_computing_structure_refinement  '<i>SHELXL-2018</i>(Sheldrick, 2015b)'
_computing_structure_solution    '<i>SHELXT-2018</i>(Sheldrick, 2015a)'
_diffrn_ambient_temperature      220(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rayonix MX225HS CCD area detector'
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.630
_diffrn_reflns_av_R_equivalents  0.0683
_diffrn_reflns_av_unetI/netI     0.0429
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            14944
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        22.210
_diffrn_reflns_theta_max         25.497
_diffrn_reflns_theta_min         1.479
_diffrn_source                   'PLSII 2D bending magnet'
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.887
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
'<i>HKL3000sm Scalepack</i>(Otwinowski et.al,2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.316
_exptl_crystal_description       needle
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.125
_exptl_crystal_size_mid          0.048
_exptl_crystal_size_min          0.038
_refine_diff_density_max         0.437
_refine_diff_density_min         -0.350
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         4252
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0589
_refine_ls_R_factor_gt           0.0554
_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^)+(0.1007P)^2^+0.1796P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1562
_refine_ls_wR_factor_ref         0.1610
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3777
_reflns_number_total             4252
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ce01210c2.cif
_cod_data_source_block           SPA292
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_melting_point' value '192 C' was changed to
'465.15' -- it was converted from degrees Celsius (C) to kelvins (K).

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_cell_volume        1596.6(6)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7245774
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.992
_shelx_estimated_absorpt_t_max   0.997
_shelx_res_checksum              57376
_shelx_hkl_checksum              77075