Pomiferin
Marek, Jaromír; Veselá, Dagmar; Lišková, Margita; Žemlička, Milan; Acta Crystallographica Section C 59 (2003) o127–o128; doi:10.1107/S0108270103002300

data_2013172
_publ_section_title
;
 Pomiferin
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o127
_journal_page_last               o128
_journal_paper_doi               10.1107/S0108270103002300
_journal_volume                  59
_journal_year                    2003
_chemical_formula_moiety         'C25 H24 O6'
_chemical_formula_sum            'C25 H24 O6'
_chemical_formula_weight         420.44
_chemical_melting_point          470.5(5)
_chemical_name_common            Pomiferin
_chemical_name_systematic
;
3-(3,4-dihydroxyphenyl)-5-hydroxy-8,8-dimethyl-6-(3-methylbut-2-enyl)-4H,8H-
pyrano[2,3-h]chromen-4-one
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 91.597(5)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   29.158(2)
_cell_length_b                   13.9891(10)
_cell_length_c                   9.9578(7)
_cell_measurement_reflns_used    2773
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      26.5
_cell_measurement_theta_min      3.3
_cell_volume                     4060.2(5)
_computing_cell_refinement       'CrysAlisRED (Oxford Diffraction, 2002)'
_computing_data_collection       'CrysAlisCCD (Oxford Diffraction, 2002)'
_computing_data_reduction        CrysAlisRED
_computing_molecular_graphics    'ORTEPIII (Johnson & Burnett, 1996)'
_computing_publication_material  'SHELXL97 and PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 16.3
_diffrn_measured_fraction_theta_full 1.00
_diffrn_measured_fraction_theta_max 1.00
_diffrn_measurement_device_type  'Kuma KM-4 CCD area-detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'Enhance (Oxford Diffraction)'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.049
_diffrn_reflns_av_sigmaI/netI    0.039
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11311
_diffrn_reflns_theta_full        25.75
_diffrn_reflns_theta_max         25.75
_diffrn_reflns_theta_min         3.31
_diffrn_standards_decay_%        none
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.376
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1776
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.21
_refine_diff_density_min         -0.17
_refine_ls_extinction_coef       0.00147(19)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     377
_refine_ls_number_reflns         3869
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.052
_refine_ls_R_factor_gt           0.042
_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^)+(0.035P)^2^+4.0P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.089
_refine_ls_wR_factor_ref         0.095
_reflns_number_gt                3409
_reflns_number_total             3869
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gg1154.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (15
times).

'_geom_bond_publ_flag' value 'No' changed to 'no' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (43 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (15
times).

'_geom_bond_publ_flag' value 'No' changed to 'no' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (43
times).

'_geom_angle_publ_flag' value 'Yes' changed to 'yes'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (14
times).

'_geom_angle_publ_flag' value 'No' changed to 'no' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (84
times).

'_geom_torsion_publ_flag' value 'Yes' changed to 'yes'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (4
times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2013172
_cod_database_fobs_code          2013172