3,5,7-Trimethoxy-2-(4-methoxyphenyl)-4<i>H</i>-1-benzopyran-4-one
Aree, Thammarat; Sawasdee, Pattara; Acta Crystallographica Section E 65 (2009) o2706–; doi:10.1107/S1600536809040938

data_2223687
_publ_section_title
;
 3,5,7-Trimethoxy-2-(4-methoxyphenyl)-4<i>H</i>-1-benzopyran-4-one
;
_journal_coeditor_code           CI2932
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2706
_journal_paper_doi               10.1107/S1600536809040938
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C19 H18 O6'
_chemical_formula_moiety         'C19 H18 O6'
_chemical_formula_sum            'C19 H18 O6'
_chemical_formula_weight         342.33
_chemical_name_common            3,4',5,7-tetramethoxyflavone
_chemical_name_systematic
;
3,5,7-Trimethoxy-2-(4-methoxyphenyl)-4<i>H</i>-1-benzopyran-4-one
;
_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                70.7490(10)
_cell_angle_beta                 81.4480(10)
_cell_angle_gamma                83.0780(10)
_cell_formula_units_Z            2
_cell_length_a                   8.7854(3)
_cell_length_b                   9.2743(4)
_cell_length_c                   10.6950(4)
_cell_measurement_reflns_used    2649
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      29.03
_cell_measurement_theta_min      2.92
_cell_volume                     811.15(5)
_computing_cell_refinement       'SAINT (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics
;
ORTEP-3 (Farrugia, 1997) and Mercury (Macrae <i>et al.</i>
2006).
;
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Bruker SMART APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0231
_diffrn_reflns_av_sigmaI/netI    0.0386
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            5901
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.33
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.946
_exptl_absorpt_correction_T_min  0.839
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.232
_refine_diff_density_min         -0.192
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     230
_refine_ls_number_reflns         3930
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0627
_refine_ls_R_factor_gt           0.0441
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_max_lt       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^)+(0.0642P)^2^+0.0796P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1194
_refine_ls_wR_factor_ref         0.1309
_reflns_number_gt                2827
_reflns_number_total             3930
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci2932.cif
_cod_data_source_block           I
_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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_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_database_code               2223687
_cod_database_fobs_code          2223687