Synthesis of 1,4-bis[2,2-bis(4-alkoxyphenyl)vinyl]benzenes and side chain modulation of their solid-state emission.
An, Peng; Shi, Zi-Fa; Dou, Wei; Cao, Xiao-Ping; Zhang, Hao-Li; Organic letters 12 (2010) 4364–4367; doi:10.1021/ol101847w

data_1503226
_publ_section_title
;
 Synthesis of 1,4-bis[2,2-bis(4-alkoxyphenyl)vinyl]benzenes and side chain
 modulation of their solid-state emission.
;
_journal_issue                   19
_journal_name_full               'Organic letters'
_journal_page_first              4364
_journal_page_last               4367
_journal_paper_doi               10.1021/ol101847w
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C54 H66 O4'
_chemical_formula_weight         779.07
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                101.382(10)
_cell_angle_beta                 91.325(11)
_cell_angle_gamma                92.182(10)
_cell_formula_units_Z            2
_cell_length_a                   9.1618(17)
_cell_length_b                   15.607(3)
_cell_length_c                   17.154(4)
_cell_measurement_reflns_used    1010
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      18.18
_cell_measurement_theta_min      2.42
_cell_volume                     2401.7(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_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 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0373
_diffrn_reflns_av_sigmaI/netI    0.1076
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            12658
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.33
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  0.9811
_exptl_absorpt_correction_T_min  0.9773
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.077
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             844
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.29
_refine_diff_density_max         0.326
_refine_diff_density_min         -0.281
_refine_diff_density_rms         0.042
_refine_ls_extinction_coef       0.0031(15)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     526
_refine_ls_number_reflns         8475
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.2117
_refine_ls_R_factor_gt           0.0804
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2001
_refine_ls_wR_factor_ref         0.2615
_reflns_number_gt                2981
_reflns_number_total             8475
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol101847w_si_006.cif
_cod_data_source_block           p-1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        2401.6(8)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1503226