Structural properties of a series of photochromic fluorinated indolylfulgides
Wolak, Mason A.; Finn, Robert C.; Rarig Jr, Randy S.; Thomas, Craig J.; Hammond, Robert P.; Birge, Robert R.; Zubieta, Jon; Lees, Watson J.; Acta Crystallographica Section C 58 (2002) o389–o393; doi:10.1107/S0108270102008041

data_2012786
_publ_section_title
;
 Structural properties of a series of photochromic fluorinated
 indolylfulgides
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o389
_journal_page_last               o393
_journal_paper_doi               10.1107/S0108270102008041
_journal_volume                  58
_journal_year                    2002
_chemical_formula_sum            'C20 H16 F5 N O3'
_chemical_formula_weight         413.34
_chemical_name_systematic
;
(3Z)-3-[1-(1,2-dimethyl-1H-indol-3-yl)-2,2,3,3,3-
pentafluoropropylidene]-4-(1-methylethylidene)dihydrofuran-2,5-dione
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 92.900(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5390(10)
_cell_length_b                   16.7160(10)
_cell_length_c                   11.7200(10)
_cell_measurement_reflns_used    3291
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      2.12
_cell_volume                     1866.4(3)
_computing_cell_refinement       'Please provide missing details'
_computing_data_collection       'Please provide missing details'
_computing_data_reduction        'Please provide missing details'
_computing_molecular_graphics    'Please provide missing details'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean '512 x 512'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker P4 with CCD area-detector'
_diffrn_measurement_method       '\f and \w 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  0.053
_diffrn_reflns_av_sigmaI/netI    0.066
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            10009
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.12
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    0.132
_exptl_absorpt_correction_T_max  0.982
_exptl_absorpt_correction_T_min  0.970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.471
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.19
_refine_ls_extinction_coef       0.011(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.009
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         3291
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.009
_refine_ls_R_factor_all          0.134
_refine_ls_R_factor_gt           0.057
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0903P)^2^+0.1488P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.146
_refine_ls_wR_factor_ref         0.181
_reflns_number_gt                1625
_reflns_number_total             3291
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bk1655.cif
_cod_data_source_block           II
_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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1866.6(3)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2012786
_cod_database_fobs_code          2012786