5-Hydroxy-3,7-dimethoxy-2-phenyl-4<i>H</i>-1-benzopyran-4-one
Hoong-Kun Fun; Abdul Razak Ibrahim; Nawong Boonnak; Surat Laphookhieo; Suchada Chantrapromma; Acta Crystallographica Section E 61 (2005) o3086–o3088; doi:10.1107/S1600536805026991

data_2206666
_publ_section_title
;
 5-Hydroxy-3,7-dimethoxy-2-phenyl-4<i>H</i>-1-benzopyran-4-one
;
_journal_coeditor_code           CI6644
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3086
_journal_page_last               o3088
_journal_paper_doi               10.1107/S1600536805026991
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C17 H14 O5'
_chemical_formula_moiety         'C17 H14 O5'
_chemical_formula_sum            'C17 H14 O5'
_chemical_formula_weight         298.28
_chemical_melting_point          .419E-305
_chemical_name_common
;
5-hydroxy-3,7-dimethoxyflavone
;
_chemical_name_systematic
;
5-Hydroxy-3,7-dimethoxy-2-phenyl-4H-1-benzopyran-4-one
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 114.3990(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.0802(3)
_cell_length_b                   7.13600(10)
_cell_length_c                   20.7415(3)
_cell_measurement_reflns_used    9804
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      0.979
_cell_measurement_theta_min      0.962
_cell_volume                     2706.66(7)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and PLATON (Spek, 2003)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1998)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART APEX2 CCD area-detector'
_diffrn_measurement_method       \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  0.0210
_diffrn_reflns_av_sigmaI/netI    0.0239
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            28245
_diffrn_reflns_theta_full        32.50
_diffrn_reflns_theta_max         32.50
_diffrn_reflns_theta_min         1.98
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.108
_exptl_absorpt_correction_T_max  0.979
_exptl_absorpt_correction_T_min  0.962
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2005)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.464
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.51
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.524
_refine_diff_density_min         -0.434
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         9804
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0567
_refine_ls_R_factor_gt           0.0448
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0806P)^2^+1.0297P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1282
_refine_ls_wR_factor_ref         0.1421
_reflns_number_gt                7907
_reflns_number_total             9804
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci6644.cif
_cod_data_source_block           I
_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/c'
_cod_database_code               2206666
_cod_database_fobs_code          2206666