Fluorescent-state switching of a 10-hydroxybezo[h]quinoline skeleton through the electronic nature of substituents
Miwa, Marino; Ito, Akitaka; RSC Advances 16 (2026) 8453–8465; doi:10.1039/D5RA09266C

data_7251592
_publ_section_title
;
 Fluorescent-state switching of a 10-hydroxybezo[h]quinoline skeleton
 through the electronic nature of substituents
;
_journal_issue                   10
_journal_name_full               'RSC Advances'
_journal_page_first              8453
_journal_page_last               8465
_journal_paper_doi               10.1039/D5RA09266C
_journal_volume                  16
_journal_year                    2026
_chemical_formula_moiety         'C27 H21 N O, 0.167(O)'
_chemical_formula_sum            'C27 H21 N O1.17'
_chemical_formula_weight         378.11
_space_group_crystal_system      trigonal
_space_group_IT_number           148
_space_group_name_Hall           '-R 3'
_space_group_name_H-M_alt        'R -3 :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2025-11-24
_audit_creation_method
;
Olex2 1.5
(compiled 2025.07.13 svn.rb7424aed for OlexSys, GUI svn.r7314)
;
_audit_update_record
;
2025-11-24 deposited with the CCDC.	2026-01-29 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            18
_cell_length_a                   31.2623(8)
_cell_length_b                   31.2623(8)
_cell_length_c                   10.4233(3)
_cell_measurement_reflns_used    8189
_cell_measurement_temperature    93.15
_cell_measurement_theta_max      29.5970
_cell_measurement_theta_min      2.2430
_cell_volume                     8822.2(4)
_computing_cell_refinement       'CrysAlisPro 1.171.40.47a (Rigaku OD, 2019)'
_computing_data_collection       'CrysAlisPro 1.171.40.47a (Rigaku OD, 2019)'
_computing_data_reduction        'CrysAlisPro 1.171.40.47a (Rigaku OD, 2019)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2019/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      93.15
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w     51.00  94.00   0.50   20.14    --   12.56-169.00-139.00   86
  2  \w    -21.00  25.00   0.50   20.14    --  -13.19 -99.00  90.00   92
  3  \w    -93.00 -50.00   0.50   20.14    --  -13.19 169.00-122.00   86
  4  \w     43.00  95.00   0.50   20.14    --   12.56 178.00-180.00  104
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type
'XtaLAB Synergy, Single source at offset/far, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0170808000
_diffrn_orient_matrix_UB_12      0.0003580000
_diffrn_orient_matrix_UB_13      -0.0455035000
_diffrn_orient_matrix_UB_21      0.0193791000
_diffrn_orient_matrix_UB_22      0.0121035000
_diffrn_orient_matrix_UB_23      0.0451888000
_diffrn_orient_matrix_UB_31      -0.0044138000
_diffrn_orient_matrix_UB_32      -0.0232106000
_diffrn_orient_matrix_UB_33      0.0228479000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0216
_diffrn_reflns_av_unetI/netI     0.0222
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -38
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            12446
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.365
_diffrn_reflns_theta_min         2.094
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'PhotonJet (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.712
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.47a (Rigaku Oxford Diffraction, 2019)
Numerical absorption correction based on gaussian integration over
			a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_description       needle
_exptl_crystal_F_000             3588
_exptl_crystal_size_max          0.62
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.129
_refine_diff_density_max         0.576
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     269
_refine_ls_number_reflns         3995
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0521
_refine_ls_R_factor_gt           0.0471
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0622P)^2^+15.6315P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1244
_refine_ls_wR_factor_ref         0.1278
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3550
_reflns_number_total             3995
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ra09266c2.cif
_cod_data_source_block           mm1-130_1
_cod_original_cell_volume        8822.2(5)
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               7251592
_shelx_shelxl_version_number     2019/3
_chemical_oxdiff_formula         'C504 H378 O18 '
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.953
_diffrn_oxdiff_digest_hkl
;
01a368ef6f83148dfffc9ee29c871cf5800f67
;
_reflns_odcompleteness_completeness 99.78
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2. Others
 Fixed Sof: O1(0.166667)
3.a Aromatic/amide H refined with riding coordinates:
 C00B(H00B), C00D(H00D), C00E(H00E), C00F(H00F), C00G(H00G), C00H(H00H),
 C00J(H00J), C00L(H00L), C00M(H00M), C00N(H00N), C00O(H00O), C00P(H00P),
 C00Q(H00Q), C00R(H00R)
3.b Idealised Me refined as rotating group:
 C00S(H00A,H00C,H00I), C00T(H00K,H00S,H00T)
3.c Idealised tetrahedral OH refined as rotating group:
 O001(H001)
;
_shelx_res_checksum              61331
_olex2_date_sample_completion    2025-11-03
_olex2_date_sample_data_collection 2021-01-21
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.118
_oxdiff_exptl_absorpt_empirical_full_min 0.898