Halogenated Tetraphenylethene with Enhanced Aggregation-Induced Emission: Anomalous Anti-Heavy-Atom Effect and Self-Reversible Mechanochromism
Xu, Pengfei; Qiu, Qianqian; Ye, Xinru; Wei, Mengru; Xi, Wenbin; Feng, Hui; Qian, Zhaosheng; Chemical Communications  (2019) –; doi:10.1039/C9CC07045A

data_7124470
_publ_section_title
;
 Halogenated Tetraphenylethene with Enhanced Aggregation-Induced Emission:
 Anomalous Anti-Heavy-Atom Effect and Self-Reversible Mechanochromism
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C9CC07045A
_journal_year                    2019
_chemical_formula_moiety         'C26 H16 Cl4'
_chemical_formula_sum            'C26 H16 Cl4'
_chemical_formula_weight         470.19
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2019-01-05
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-11-06 deposited with the CCDC.	2019-11-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.701(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   20.1695(10)
_cell_length_b                   9.8843(5)
_cell_length_c                   23.3874(11)
_cell_measurement_reflns_used    9919
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      68.21
_cell_measurement_theta_min      4.39
_cell_volume                     4657.4(4)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      298.32
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0699
_diffrn_reflns_av_unetI/netI     0.0462
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            60267
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.338
_diffrn_reflns_theta_min         2.828
_exptl_absorpt_coefficient_mu    4.691
_exptl_absorpt_correction_T_max  0.710
_exptl_absorpt_correction_T_min  0.405
_exptl_absorpt_correction_type   integration
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_description       block
_exptl_crystal_F_000             1920
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.504
_refine_diff_density_min         -0.609
_refine_diff_density_rms         0.110
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     541
_refine_ls_number_reflns         8465
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0825
_refine_ls_R_factor_gt           0.0708
_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^)+(0.1244P)^2^+2.8441P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1875
_refine_ls_wR_factor_ref         0.2078
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6934
_reflns_number_total             8465
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc07045a4.cif
_cod_data_source_block           1_CCDC1
_cod_database_code               7124470
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.710
_shelx_estimated_absorpt_t_min   0.405
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C21(H21), C43(H43), C28(H28), C38(H38), C14(H14), C44(H44), C35(H35),
 C37(H37), C41(H41), C31(H31), C17(H17), C15(H15), C32(H32), C5(H5), C3(H3),
 C29(H29), C18(H18), C23(H23), C12(H12), C20(H20), C47(H47), C24(H24), C49(H49),
  C34(H34), C11(H11), C46(H46), C9(H9), C50(H50), C40(H40), C2(H2), C6(H6),
 C8(H8)
;
_olex2_submission_special_instructions 'No special instructions were received'