Tuning the solid-state fluorescence of chalcone crystals via molecular coplanarity and J-aggregate formation
Yu, Fangfang; Wang, Mingliang; Sun, Hao; Shan, Yaqi; Du, Man; Khan, Arshad; Usman, Rabia; Zhang, Wei; Shan, Hongbin; Xu, Chunxiang; RSC Adv. 7 (2017) 8491–; doi:10.1039/C6RA27458G

data_7227544
_publ_section_title
;
 Tuning the solid-state fluorescence of chalcone crystals via molecular
 coplanarity and J-aggregate formation
;
_journal_issue                   14
_journal_name_full               'RSC Adv.'
_journal_page_first              8491
_journal_paper_doi               10.1039/C6RA27458G
_journal_volume                  7
_journal_year                    2017
_chemical_formula_sum            'C23 H15 Cl O'
_chemical_formula_weight         342.80
_chemical_name_systematic        ' 3-(9-anthryl)-1-(4-chloro) prop-2-en-1-one '
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2017-01-16 deposited with the CCDC.
2017-01-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   10.831(2)
_cell_length_b                   10.431(2)
_cell_length_c                   30.703(6)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      9
_cell_volume                     3468.8(11)
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Nonius CAD4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0334
_diffrn_reflns_av_unetI/netI     0.0646
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_number            4495
_diffrn_reflns_point_group_measured_fraction_full 0.708
_diffrn_reflns_point_group_measured_fraction_max 0.707
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.373
_diffrn_reflns_theta_min         1.326
_exptl_absorpt_coefficient_mu    0.227
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_description       rodlike
_exptl_crystal_F_000             1424
_exptl_crystal_preparation       ', Luminescent'
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: ethanol'
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.188
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Classical Flack method preferred over Parsons because s.u. lower.
;
_refine_ls_abs_structure_Flack   0.42(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     451
_refine_ls_number_reflns         4495
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.1141
_refine_ls_R_factor_gt           0.0551
_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^)+(0.0350P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0969
_refine_ls_wR_factor_ref         0.1132
_reflns_Friedel_coverage         0.386
_reflns_Friedel_fraction_full    0.404
_reflns_Friedel_fraction_max     0.402
_reflns_number_gt                2360
_reflns_number_total             4495
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ra27458g2.cif
_cod_data_source_block           X
_cod_depositor_comments
;

2017-10-04
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_cell_volume        3468.8(12)
_cod_original_formula_sum        'C46 H30 Cl2 O2'
_cod_original_formula_units_Z    4
_cod_original_formula_weight     685.60
_cod_database_code               7227544
_shelx_estimated_absorpt_t_min   0.956
_shelx_estimated_absorpt_t_max   0.978
_shelxl_version_number           2014-3
_shelx_res_checksum              24021