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_7121533
_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            'C28 H24 O2'
_chemical_formula_weight         392.47
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/1
_audit_update_record
;
2018-01-26 deposited with the CCDC.
2018-04-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.8280(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   14.5500(2)
_cell_length_b                   12.0209(2)
_cell_length_c                   25.0181(3)
_cell_measurement_reflns_used    4935
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      69.9300
_cell_measurement_theta_min      4.7950
_cell_volume                     4311.55(11)
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.981
_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  0.0118
_diffrn_reflns_av_unetI/netI     0.0148
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            8185
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         70.497
_diffrn_reflns_theta_min         3.586
_exptl_absorpt_coefficient_mu    0.583
_exptl_crystal_density_diffrn    1.209
_exptl_crystal_description       bloc
_exptl_crystal_F_000             1664
_refine_diff_density_max         0.162
_refine_diff_density_min         -0.178
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         4065
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0424
_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^)+(0.0538P)^2^+1.7447P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1125
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3715
_reflns_number_total             4065
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc01184b2.cif
_cod_data_source_block           1
_cod_depositor_comments
'Adding full bibliography for 7121533--7121537.cif.'
_cod_database_code               7121533
_shelx_shelxl_version_number     2018/1
_shelx_res_checksum              88334