Regulating the emission of tetraphenylethenes by changing the alkoxyl linkage length between two neighboring phenyl moieties.
Lou, Dandan; Lu, Xiangcheng; Zhang, Mengxing; Bai, Ming; Jiang, Jianzhuang; Chemical communications (Cambridge, England) 54 (2018) 6987–6990; doi:10.1039/c8cc01184b

data_7121535
_publ_section_title
;
 Regulating the emission of tetraphenylethenes by changing the alkoxyl
 linkage length between two neighboring phenyl moieties.
;
_journal_issue                   51
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6987
_journal_page_last               6990
_journal_paper_doi               10.1039/c8cc01184b
_journal_volume                  54
_journal_year                    2018
_chemical_formula_sum            'C27 H20 O2'
_chemical_formula_weight         376.43
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-01-26 deposited with the CCDC.
2018-04-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.682(2)
_cell_angle_gamma                90
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_cell_length_c                   25.0320(5)
_cell_measurement_reflns_used    4723
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      70.4660
_cell_measurement_theta_min      4.8090
_cell_volume                     1946.56(7)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, Eos'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0136
_diffrn_reflns_av_unetI/netI     0.0173
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.977
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            7106
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.977
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         70.501
_diffrn_reflns_theta_min         3.563
_exptl_absorpt_coefficient_mu    0.626
_exptl_crystal_density_diffrn    1.284
_exptl_crystal_description       bloc
_exptl_crystal_F_000             792
_refine_diff_density_max         0.211
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     270
_refine_ls_number_reflns         3646
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0402
_refine_ls_R_factor_gt           0.0379
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0461P)^2^+0.6056P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0959
_refine_ls_wR_factor_ref         0.0975
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3384
_reflns_number_total             3646
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc01184b2.cif
_cod_data_source_block           1_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7121533--7121537.cif.'
_cod_database_code               7121535
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              8764