(3a<i>S</i>,4<i>S</i>,5<i>R</i>,7a<i>S</i>,1'<i>R</i>,2a'<i>S</i>,6'<i>S</i>,6a'<i>S</i>)-5-(2',5'-Dioxo-2a'-methyl-6',6a'-epoxyperhydroinden-1'-yl)-3a,4-epoxy-5-hydroxy-7a-methylperhydro-1<i>H</i>-inden-1-one
Shi, Hai-Jian; Li, Yi-Zhi; Hu, Yue-Fei; Hu, Hong-Wen; Acta Crystallographica Section E 60 (2004) o1275–o1276; doi:10.1107/S1600536804014849

data_2203904
_publ_section_title
(3a<i>S</i>,4<i>S</i>,5<i>R</i>,7a<i>S</i>,1'<i>R</i>,2a'<i>S</i>,6'<i>S</i>,6a'<i>S</i>)-5-(2',5'-Dioxo-2a'-methyl-6',6a'-epoxyperhydroinden-1'-yl)-3a,4-epoxy-5-hydroxy-7a-methylperhydro-1<i>H</i>-inden-1-one
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1275
_journal_page_last               o1276
_journal_paper_doi               10.1107/S1600536804014849
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C20 H24 O6'
_chemical_formula_moiety         'C20 H24 O6'
_chemical_formula_sum            'C20 H24 O6'
_chemical_formula_weight         360.39
_chemical_melting_point          455.2(10)
_chemical_name_systematic
;
(3aS,4S,5R,7aS,1'R,2a'S,6'S,6a'S)-5-(2',5'-dioxo-2a'-methyl-6',
6a'-epoxylperhydroinden-1'-yl)-3a,4-epoxy-5-hydroxy-7a-methyl-
perhydro-1H-inden-1-one
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8847(12)
_cell_length_b                   9.4841(17)
_cell_length_c                   26.480(5)
_cell_measurement_reflns_used    685
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      19.25
_cell_measurement_theta_min      2.64
_cell_volume                     1729.0(5)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material
'SHELXTL and MERCURY (Version 1.2.1; Bruno et al., 2002)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2000)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0964
_diffrn_reflns_av_sigmaI/netI    0.0719
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            9425
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.28
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.96
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.455
_refine_diff_density_min         -0.553
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         1989
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0828
_refine_ls_R_factor_gt           0.0596
_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^)+(0.07P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1321
_refine_ls_wR_factor_ref         0.1411
_reflns_number_gt                1455
_reflns_number_total             1989
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hg6055.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 '454.2-456.2 K' was changed to
'455.2(10)' - 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 '454.2-456.2 K' was changed to
'455.2(10)' - the average value was taken and precision was
estimated.

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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               2203904
_cod_database_fobs_code          2203904