Fluorinated diphenylpolyenes: crystal structures and emission properties.
Sonoda, Yoriko; Goto, Midori; Tsuzuki, Seiji; Tamaoki, Nobuyuki; The journal of physical chemistry. A 111 (2007) 13441–13451; doi:10.1021/jp0766104

data_1505112
_publ_section_title
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 Fluorinated diphenylpolyenes: crystal structures and emission properties.
;
_journal_issue                   51
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              13441
_journal_page_last               13451
_journal_paper_doi               10.1021/jp0766104
_journal_volume                  111
_journal_year                    2007
_chemical_formula_sum            'C18 H12 F4'
_chemical_formula_weight         304.28
_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                85.677(8)
_cell_angle_beta                 73.170(8)
_cell_angle_gamma                79.341(7)
_cell_formula_units_Z            1
_cell_length_a                   6.752(3)
_cell_length_b                   7.414(3)
_cell_length_c                   7.515(3)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      28.117
_cell_measurement_theta_min      2.298
_cell_volume                     353.8(3)
_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      183(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.848
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating unit'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0170
_diffrn_reflns_av_sigmaI/netI    0.0367
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            1904
_diffrn_reflns_theta_full        25.89
_diffrn_reflns_theta_max         28.06
_diffrn_reflns_theta_min         2.80
_diffrn_standards_decay_%        0.0
_diffrn_standards_interval_time  1024
_diffrn_standards_number         17
_exptl_absorpt_coefficient_mu    0.119
_exptl_absorpt_correction_T_max  0.9882
_exptl_absorpt_correction_T_min  0.9652
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.428
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             156
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.213
_refine_diff_density_min         -0.412
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     100
_refine_ls_number_reflns         1453
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_all          0.0863
_refine_ls_R_factor_gt           0.0605
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0874P)^2^+0.1798P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1621
_refine_ls_wR_factor_ref         0.1844
_reflns_number_gt                1008
_reflns_number_total             1453
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp0766104-file004.cif
_cod_data_source_block           so2fa
_cod_depositor_comments
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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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1505112