5-Hydroxy-7-methoxy-2,6,8-trimethyl-4<i>H</i>-chromen-4-one
Hoong-Kun Fun; Kan Chantrapromma; Yupparase Pullaput; Nawong Boonnak; Suchada Chantrapromma; Acta Crystallographica Section E 63 (2007) o2017–o2019; doi:10.1107/S1600536807013402

data_2213027
_publ_section_title
;
 5-Hydroxy-7-methoxy-2,6,8-trimethyl-4<i>H</i>-chromen-4-one
;
_journal_coeditor_code           SJ2263
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2017
_journal_page_last               o2019
_journal_paper_doi               10.1107/S1600536807013402
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C13 H14 O4'
_chemical_formula_moiety         'C13 H14 O4'
_chemical_formula_sum            'C13 H14 O4'
_chemical_formula_weight         234.24
_chemical_melting_point          387.5(5)
_chemical_name_common
;
8-Methyleugenitin
;
_chemical_name_systematic
;
5-Hydroxy-7-methoxy-2,6,8-trimethyl-4H-chromen-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                 91.3010(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0816(2)
_cell_length_b                   8.6719(2)
_cell_length_c                   15.8187(4)
_cell_measurement_reflns_used    3216
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      30.00
_cell_measurement_theta_min      2.52
_cell_volume                     1108.33(5)
_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      297(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0224
_diffrn_reflns_av_sigmaI/netI    0.0212
_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       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            11518
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.52
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_T_max  0.9638
_exptl_absorpt_correction_T_min  0.9418
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2005)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.359
_refine_diff_density_min         -0.291
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         3216
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0421
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0625P)^2^+0.3003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1072
_refine_ls_wR_factor_ref         0.1106
_reflns_number_gt                2884
_reflns_number_total             3216
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sj2263.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:

'_chemical_melting_point' value '387-388' was changed to '387.5(5)' -
the average value was taken and precision was estimated.

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 '387-388' was changed to '387.5(5)' -
the average value was taken and precision was
estimated.

'_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               2213027
_cod_database_fobs_code          2213027