(<i>E</i>)-9-(4-Fluorostyryl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-2<i>H</i>-xanthene-1,8-dione
Lee, Jae Kyun; Min, Sun-Joon; Cho, Yong Seo; Cha, Joo Hwan; Won, Sung Ok; Acta Crystallographica Section E 69 (2013) o985–; doi:10.1107/S1600536813014049

data_2237814
_publ_section_title
;
 (<i>E</i>)-9-(4-Fluorostyryl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-2<i>H</i>-xanthene-1,8-dione
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_journal_coeditor_code           FF2106
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o985
_journal_paper_doi               10.1107/S1600536813014049
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C25 H27 F O3'
_chemical_formula_moiety         'C25 H27 F O3'
_chemical_formula_sum            'C25 H27 F O3'
_chemical_formula_weight         394.48
_chemical_name_systematic
(<i>E</i>)-9-(4-Fluorostyryl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-2<i>H</i>-xanthene-1,8-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
_cell_angle_alpha                90.0000
_cell_angle_beta                 99.681(3)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   5.9367(7)
_cell_length_b                   18.8521(16)
_cell_length_c                   19.3709(16)
_cell_measurement_reflns_used    12751
_cell_measurement_temperature    296
_cell_measurement_theta_max      27.45
_cell_measurement_theta_min      3.04
_cell_volume                     2137.1(4)
_computing_cell_refinement       'RAPID-AUTO (Rigaku, 1995)'
_computing_data_collection       'RAPID-AUTO (Rigaku, 2006)'
_computing_data_reduction        'RAPID-AUTO (Rigaku, 1995)'
_computing_molecular_graphics    'CrystalStructure (Rigaku, 2010)'
_computing_publication_material  'CrystalStructure (Rigaku, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'Il Milione (Burla <i>et al.</i>, 2007)'
_diffrn_ambient_temperature      296
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0372
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            20480
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.773
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Rigaku, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             840.00
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.420
_refine_diff_density_min         -0.240
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    mixed
_refine_ls_number_parameters     274
_refine_ls_number_reflns         4864
_refine_ls_number_restraints     0
_refine_ls_R_factor_gt           0.0534
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0774P)^2^+0.3562P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1690
_reflns_number_gt                2857
_reflns_number_total             4864
_reflns_threshold_expression     F^2^>2\s(F^2^)
_cod_data_source_file            ff2106.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2237814
_cod_database_fobs_code          2237814