Photochromic Crystals: Toward an Understanding of Color Development in the Solid State
Scott, Janet L.; Tanaka, Koichi; Crystal Growth & Design 5 (2005) 1209–; doi:10.1021/cg049591l

data_4504875
_publ_section_title
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 Photochromic Crystals:&#x2009; Toward an Understanding of Color
 Development in the Solid State
;
_journal_issue                   3
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1209
_journal_paper_doi               10.1021/cg049591l
_journal_volume                  5
_journal_year                    2005
_chemical_formula_sum            'C92 H60 O8'
_chemical_formula_weight         1293.40
_chemical_name_systematic
; 
3-fluoren-9-ylidene-2-[9-(3-oxo-3-(4-methoxyphenyl)-prop-1-ynyl)-9H-fluoren-9-yl]-1-(4-methylphenyl)-propenone

;
_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                72.1960(10)
_cell_angle_beta                 81.5170(10)
_cell_angle_gamma                77.0650(10)
_cell_formula_units_Z            2
_cell_length_a                   9.70570(10)
_cell_length_b                   17.5950(2)
_cell_length_c                   20.9577(3)
_cell_measurement_temperature    123(2)
_cell_volume                     3309.03(7)
_computing_cell_refinement       'Nonius collect'
_computing_data_collection       'Nonius collect'
_computing_data_reduction        'Nonius collect'
_computing_molecular_graphics    X-Seed
_computing_publication_material  ciftab
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Enraf Nonius Kappa CCD'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0435
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            13675
_diffrn_reflns_theta_full        26.68
_diffrn_reflns_theta_max         26.68
_diffrn_reflns_theta_min         3.58
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.298
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             1352
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.646
_refine_diff_density_min         -0.260
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     919
_refine_ls_number_reflns         13675
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0713
_refine_ls_R_factor_gt           0.0465
_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^)+(0.0499P)^2^+1.7151P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1060
_refine_ls_wR_factor_ref         0.1186
_reflns_number_gt                10304
_reflns_number_total             13675
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg049591lsi20041202_103110.cif
_cod_data_source_block           1g
_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 2.4.1 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               4504875