Spiro-Functionalized Diphenylethenes: Suppression of a Reversible Photocyclization Contributes to the Aggregation-Induced Emission Effect.
Zhou, Zhibiao; Xie, Sheng; Chen, Xian; Tu, Yujie; Xiang, Jiannan; Wang, Jianguo; He, Zikai; Zeng, Zebing; Tang, Ben Zhong; Journal of the American Chemical Society 141 (2019) 9803–9807; doi:10.1021/jacs.9b04426

data_4128264
_publ_section_title
;
 Spiro-Functionalized Diphenylethenes: Suppression of a Reversible
 Photocyclization Contributes to the Aggregation-Induced Emission Effect.
;
_journal_issue                   25
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9803
_journal_page_last               9807
_journal_paper_doi               10.1021/jacs.9b04426
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C37 H24'
_chemical_formula_sum            'C37 H24'
_chemical_formula_weight         468.56
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2017-05-22
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5337)
;
_cell_angle_alpha                90
_cell_angle_beta                 101.400(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.9961(10)
_cell_length_b                   11.5411(11)
_cell_length_c                   22.484(2)
_cell_measurement_reflns_used    7634
_cell_measurement_temperature    302(2)
_cell_measurement_theta_max      28.793
_cell_measurement_theta_min      2.494
_cell_volume                     2542.7(4)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      302.09
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0728
_diffrn_reflns_av_unetI/netI     0.0700
_diffrn_reflns_Laue_measured_fraction_full 0.983
_diffrn_reflns_Laue_measured_fraction_max 0.982
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            24191
_diffrn_reflns_point_group_measured_fraction_full 0.983
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.498
_diffrn_reflns_theta_min         2.078
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6332
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1510 before and 0.0628 after correction. The Ratio of minimum to maximum transmission is 0.8490. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.224
_exptl_crystal_description       block
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.238
_refine_diff_density_min         -0.165
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         4641
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1173
_refine_ls_R_factor_gt           0.0655
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0672P)^2^+0.3022P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1411
_refine_ls_wR_factor_ref         0.1605
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2758
_reflns_number_total             4641
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b04426_si_003.cif
_cod_data_source_block           mo_d8v17031_0m
_cod_database_code               4128264
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.994
_shelx_estimated_absorpt_t_min   0.990
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C8(H8), C9(H9), C11(H11), C12(H12), C13(H13),
 C14(H14), C19(H19), C20(H20), C21(H21), C22(H22), C27(H27), C28(H28), C29(H29),
  C30(H30), C31(H31), C33(H33), C34(H34), C35(H35), C36(H36), C37(H37)
;
_shelx_res_checksum              67007
_shelx_hkl_checksum              67874
_olex2_submission_special_instructions 'No special instructions were received'