<i>ent</i>-(8<i>S</i>,10<i>R</i>)-15,16-Epoxy-19-norcleroda-4,11,13(16),14-tetraene-18,6(<i>R</i>):20,12-diolactone (isocrotocaudin)
Said, Ikram M.; Noor, Ainal F. A.; Syah, Yana M.; Latif, Jalifah; Ngah, Nurziana; Yamin, Bohari M.; Acta Crystallographica Section E 61 (2005) o1035–o1037; doi:10.1107/S1600536805007725

data_2205463
_publ_section_title
;<i>ent</i>-(8<i>S</i>,10<i>R</i>)-15,16-Epoxy-19-norcleroda-4,11,13(16),14-tetraene-18,6(<i>R</i>):20,12-diolactone
 (isocrotocaudin)
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1035
_journal_page_last               o1037
_journal_paper_doi               10.1107/S1600536805007725
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C19 H18 O5'
_chemical_formula_moiety         'C19 H18 O5'
_chemical_formula_sum            'C19 H18 O5'
_chemical_formula_weight         326.33
_chemical_melting_point          486.1(7)
_chemical_name_common            Isocrotocaudin
_chemical_name_systematic
;
ent-(8S,10R)-15,16-epoxy-19-norcleroda-4,11,13(16),14-tetraene-
18,6(R):20,12-diolactone
;
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.677(2)
_cell_length_b                   10.794(3)
_cell_length_c                   22.608(7)
_cell_measurement_reflns_used    743
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.0
_cell_measurement_theta_min      1.8
_cell_volume                     1629.4(8)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material
'SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 2003)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 83.66
_diffrn_measured_fraction_theta_full 0.99
_diffrn_measured_fraction_theta_max 0.99
_diffrn_measurement_device_type  'Bruker SMART APEX 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  0.0353
_diffrn_reflns_av_sigmaI/netI    0.0303
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8831
_diffrn_reflns_theta_full        26.0
_diffrn_reflns_theta_max         26.0
_diffrn_reflns_theta_min         1.8
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.991
_exptl_absorpt_correction_T_min  0.960
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       slab
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.16
_refine_diff_density_min         -0.13
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.18
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         1866
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.18
_refine_ls_R_factor_all          0.068
_refine_ls_R_factor_gt           0.056
_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^)+(0.0462P)^2^+0.3404P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.110
_refine_ls_wR_factor_ref         0.113
_reflns_number_gt                1583
_reflns_number_total             1866
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv6464.cif
_cod_data_source_block           I
_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 '485.5--486.8' was changed to
'486.1(7)' - 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 '485.5--486.8' was changed to
'486.1(7)' - 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               2205463
_cod_database_fobs_code          2205463