Photochromism of diarylethenes in nanolayers of a single crystal
Morimoto, Masakazu; Kobatake, Seiya; Irie, Masahiro; Photochemical & Photobiological Sciences 2 (2003) 1088–1094; doi:10.1039/b307999f

data_1516487
_publ_section_title
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 Photochromism of diarylethenes in nanolayers of a single crystal
;
_journal_issue                   11
_journal_name_full
'Photochemical &amp; Photobiological Sciences'
_journal_page_first              1088
_journal_page_last               1094
_journal_paper_doi               10.1039/b307999f
_journal_volume                  2
_journal_year                    2003
_chemical_formula_sum            'C56 H30 F22 S4'
_chemical_formula_weight         1249.04
_chemical_name_common            'co-crystal 1a/2a''
_chemical_name_systematic        ?
_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                76.844(16)
_cell_angle_beta                 83.197(16)
_cell_angle_gamma                75.445(15)
_cell_formula_units_Z            2
_cell_length_a                   11.737(12)
_cell_length_b                   13.717(14)
_cell_length_c                   15.352(15)
_cell_measurement_reflns_used    837
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      22.916
_cell_measurement_theta_min      2.281
_cell_volume                     2325(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      123(2)
_diffrn_measured_fraction_theta_full 0.869
_diffrn_measured_fraction_theta_max 0.869
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '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  0.2045
_diffrn_reflns_av_sigmaI/netI    0.2368
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19205
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         1.37
_diffrn_standards_decay_%        0.57
_exptl_absorpt_coefficient_mu    0.338
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.785
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.688
_refine_diff_density_min         -0.669
_refine_diff_density_rms         0.116
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.934
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     838
_refine_ls_number_reflns         10005
_refine_ls_number_restraints     38
_refine_ls_restrained_S_all      0.937
_refine_ls_R_factor_all          0.1950
_refine_ls_R_factor_gt           0.0822
_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^)+(0.1240P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2010
_refine_ls_wR_factor_ref         0.2640
_reflns_number_gt                4282
_reflns_number_total             10005
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b307999f.txt
_cod_data_source_block           1a/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_cell_volume        2324(4)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1516487