Photochromism of dithienylethene single crystals having anthracene substituents.
Ohara, Hiroki; Morimoto, Masakazu; Irie, Masahiro; Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 9 (2010) 1079–1081; doi:10.1039/c0pp00083c

data_1515923
_publ_section_title
;
 Photochromism of dithienylethene single crystals having anthracene
 substituents.
;
_journal_issue                   8
_journal_name_full
'Photochemical &amp; photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology'
_journal_page_first              1079
_journal_page_last               1081
_journal_paper_doi               10.1039/c0pp00083c
_journal_volume                  9
_journal_year                    2010
_chemical_formula_sum            'C45 H30 F6 S2'
_chemical_formula_weight         748.81
_chemical_name_common
1,2-Bis(2-(1-anthryl)-5-ethylthien-3-yl)perfluorocyclopentene
_chemical_name_systematic
;
1,2-Bis(2-(1-anthryl)-5-ethylthien-3-yl)perfluorocyclopentene
;
_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                70.4600(10)
_cell_angle_beta                 82.3160(10)
_cell_angle_gamma                82.2090(10)
_cell_formula_units_Z            2
_cell_length_a                   9.8648(9)
_cell_length_b                   11.9212(10)
_cell_length_c                   15.7333(14)
_cell_measurement_reflns_used    5666
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      26.95
_cell_measurement_theta_min      2.40
_cell_volume                     1719.8(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      93(2)
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_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  0.0457
_diffrn_reflns_av_sigmaI/netI    0.0562
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            19251
_diffrn_reflns_theta_full        27.04
_diffrn_reflns_theta_max         27.04
_diffrn_reflns_theta_min         1.38
_exptl_absorpt_coefficient_mu    0.222
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.446
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             772
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.374
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.954
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     480
_refine_ls_number_reflns         7320
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.954
_refine_ls_R_factor_all          0.0540
_refine_ls_R_factor_gt           0.0416
_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^)+(0.0534P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0985
_refine_ls_wR_factor_ref         0.1022
_reflns_number_gt                5608
_reflns_number_total             7320
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0pp00083c.txt
_cod_data_source_block           2a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1515923