10-Acetonyl-10-hydroxy-1,6-dimethyl-1,2,10,11-tetrahydrophenanthro[1,2-<i>b</i>]furan-11-one
Ying Chang; Gang Xu; Qin-Shi Zhao; Yang Lu; Qi-Tai Zheng; Acta Crystallographica Section E 62 (2006) o3235–o3236; doi:10.1107/S1600536806025438

data_2209954
_publ_section_title
10-Acetonyl-10-hydroxy-1,6-dimethyl-1,2,10,11-tetrahydrophenanthro[1,2-<i>b</i>]furan-11-one
_journal_coeditor_code           NC2018
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3235
_journal_page_last               o3236
_journal_paper_doi               10.1107/S1600536806025438
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C21 H20 O4'
_chemical_formula_moiety         'C21 H20 O4'
_chemical_formula_sum            'C21 H20 O4'
_chemical_formula_weight         336.37
_chemical_name_common            'danshenol A'
_chemical_name_systematic
;
10-Acetonyl-10-hydroxy-1,6-dimethyl-1,2,10,11-
tetrahydrophenanthro[1,2-b]furan-11-one
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 102.75(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.5180(15)
_cell_length_b                   6.7150(13)
_cell_length_c                   17.161(3)
_cell_measurement_reflns_used    1930
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27.21
_cell_measurement_theta_min      2.43
_cell_volume                     845.0(3)
_computing_cell_refinement       'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'DENZO (Otwinowski & Minor, 1997)'
_computing_data_reduction        SCALEPACK
_computing_molecular_graphics
'ORTEPII (Johnson, 1976) and PLUTON (Spek, 2003)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.945
_diffrn_measurement_device_type  'MAC DIP 2030K'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotate anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0482
_diffrn_reflns_av_sigmaI/netI    0.0144
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            7044
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.21
_diffrn_reflns_theta_min         2.43
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       column
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.284
_refine_diff_density_min         -0.216
_refine_ls_extinction_coef       0.081(15)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.091
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         1930
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.111
_refine_ls_R_factor_all          0.0661
_refine_ls_R_factor_gt           0.0649
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1047P)^2^+0.3521P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1766
_refine_ls_wR_factor_ref         0.1789
_reflns_number_gt                1894
_reflns_number_total             1930
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            nc2018.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2209954
_cod_database_fobs_code          2209954