Switching the emission of tetrakis(4-methoxyphenyl)ethylene among three colors in the solid state
Li, Chenyu; Luo, Xiaoliang; Zhao, Weijun; Li, Cuihong; Liu, Zhengping; Bo, Zhishan; Dong, Yuping; Dong, Yong Qiang; Tang, Ben Zhong; New Journal of Chemistry 37 (2013) 1696–; doi:10.1039/c3nj00063j

data_7053052
_publ_section_title
;
 Switching the emission of tetrakis(4-methoxyphenyl)ethylene among three
 colors in the solid state
;
_journal_issue                   6
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              1696
_journal_paper_doi               10.1039/c3nj00063j
_journal_volume                  37
_journal_year                    2013
_chemical_formula_sum            'C30 H28 O4'
_chemical_formula_weight         452.52
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 125.672(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   19.586(2)
_cell_length_b                   5.6198(7)
_cell_length_c                   13.7767(16)
_cell_measurement_reflns_used    1314
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.07
_cell_measurement_theta_min      3.64
_cell_volume                     1231.9(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_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_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0179
_diffrn_reflns_av_sigmaI/netI    0.0220
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3285
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  0.9842
_exptl_absorpt_correction_T_min  0.9634
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.220
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.111
_refine_diff_density_min         -0.108
_refine_diff_density_rms         0.025
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         1327
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0399
_refine_ls_R_factor_gt           0.0328
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0518P)^2^+0.0977P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0863
_refine_ls_wR_factor_ref         0.0907
_reflns_number_gt                1125
_reflns_number_total             1327
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3nj00063j.txt
_cod_data_source_block           110117a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        1231.9(3)
_cod_original_sg_symbol_H-M      C2
_cod_database_code               7053052