5,7-Dimethoxy-2-phenyl-4<i>H</i>-chromen-4-one
Nallasivam, Angannan; Nethaji, Munirathinam; Vembu, Nagarajan; Ragunathan, Venkatraman; Sulochana, Nagarajan; Acta Crystallographica Section E 65 (2009) o504–o505; doi:10.1107/S1600536809003948

data_2221130
_publ_section_title
;
 5,7-Dimethoxy-2-phenyl-4<i>H</i>-chromen-4-one
;
_journal_coeditor_code           LH2766
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o504
_journal_page_last               o505
_journal_paper_doi               10.1107/S1600536809003948
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C17 H14 O4'
_chemical_formula_moiety         'C17 H14 O4'
_chemical_formula_sum            'C17 H14 O4'
_chemical_formula_weight         282.28
_chemical_melting_point_gt       413
_chemical_melting_point_lt       415
_chemical_name_common
;
5,7-Dimethoxy-2-phenyl benzopyran-4H-one
;
_chemical_name_systematic
;
5,7-Dimethoxy-2-phenyl-4<i>H</i>-chromen-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                92.414(4)
_cell_angle_beta                 102.723(4)
_cell_angle_gamma                91.916(4)
_cell_formula_units_Z            4
_cell_length_a                   7.3938(17)
_cell_length_b                   11.430(3)
_cell_length_c                   16.547(4)
_cell_measurement_reflns_used    547
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.0
_cell_measurement_theta_min      2.67
_cell_volume                     1361.5(6)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'SMART (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 0.3
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_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  0.0422
_diffrn_reflns_av_sigmaI/netI    0.0542
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            15401
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         28.04
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.9772
_exptl_absorpt_correction_T_min  0.9668
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.29
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.170
_refine_ls_extinction_coef       0.051(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     386
_refine_ls_number_reflns         6096
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0897
_refine_ls_R_factor_gt           0.0497
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0509P)^2^+0.201P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1078
_refine_ls_wR_factor_ref         0.1259
_reflns_number_gt                3897
_reflns_number_total             6096
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh2766.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:

'_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               2221130
_cod_database_fobs_code          2221130