3,3,4,4,5,5-Hexafluoro-1,2-bis[2-methyl-5-(3-methylphenyl)-3-thienyl]cyclopent-1-ene, a new photochromic diarylethene compound
Pu, Shou-Zhi; Yang, Tian-She; Chen, Bing; Xu, Jing-kun; Acta Crystallographica Section E 62 (2006) o279–o281; doi:10.1107/S1600536805041966

data_2207833
_publ_section_title
;3,3,4,4,5,5-Hexafluoro-1,2-bis[2-methyl-5-(3-methylphenyl)-3-thienyl]cyclopent-1-ene,
 a new photochromic diarylethene compound
;
_journal_coeditor_code           LH6564
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o279
_journal_page_last               o281
_journal_paper_doi               10.1107/S1600536805041966
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C29 H22 F6 S2'
_chemical_formula_moiety         'C29 H22 F6 S2'
_chemical_formula_sum            'C29 H22 F6 S2'
_chemical_formula_weight         548.59
_chemical_melting_point          417
_chemical_name_systematic
;
3,3,4,4,5,5-Hexafluoro-1,2-bis[2-methyl-5-(3-methylphenyl)-3-
thienyl]cyclopent-1-ene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 92.934(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9825(16)
_cell_length_b                   9.2708(12)
_cell_length_c                   22.935(3)
_cell_measurement_reflns_used    3825
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      25.26
_cell_measurement_theta_min      2.37
_cell_volume                     2544.4(6)
_computing_cell_refinement       'SAINT (Bruker, 1997)'
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.0328
_diffrn_reflns_av_sigmaI/netI    0.0427
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            13927
_diffrn_reflns_theta_full        26.38
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         1.78
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.270
_exptl_absorpt_correction_T_max  0.970
_exptl_absorpt_correction_T_min  0.728
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.432
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.180
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     426
_refine_ls_number_reflns         5176
_refine_ls_number_restraints     158
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0795
_refine_ls_R_factor_gt           0.0412
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0506P)^2^+0.4455P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0949
_refine_ls_wR_factor_ref         0.1115
_reflns_number_gt                3308
_reflns_number_total             5176
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh6564.cif
_cod_data_source_block           Ia
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

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 2.4.1 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 21/n'
_cod_database_code               2207833
_cod_database_fobs_code          2207833