4-Hydroxy-3,4a,8-trimethyl-3,3a,4,4a,7a,8,9,9a-octahydroazuleno[6,5-<i>b</i>]furan-2,5-dione
Shou-Cheng Pu; Chun-Ling Tu; Yi Deng; Acta Crystallographica Section E 63 (2007) o4543–o4543; doi:10.1107/S1600536807054116

data_2216273
_publ_section_title
4-Hydroxy-3,4a,8-trimethyl-3,3a,4,4a,7a,8,9,9a-octahydroazuleno[6,5-<i>b</i>]furan-2,5-dione
_journal_coeditor_code           BT2557
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o4543
_journal_page_last               o4543
_journal_paper_doi               10.1107/S1600536807054116
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C15 H20 O4'
_chemical_formula_moiety         'C15 H20 O4'
_chemical_formula_sum            'C15 H20 O4'
_chemical_formula_weight         264.31
_chemical_melting_point          223.0(10)
_chemical_name_systematic
;
4-Hydroxy-3,4a,8-trimethyl-3,3a,4,4a,7a,8,9,9a-
octahydroazuleno[6,5-b]furan-2,5-dione
;
_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                 95.59(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.3634(13)
_cell_length_b                   12.608(3)
_cell_length_c                   8.1146(16)
_cell_measurement_reflns_used    1887
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.825
_cell_measurement_theta_min      2.522
_cell_volume                     647.9(2)
_computing_cell_refinement       'Crystalclear (Rigaku/MSC, 2005)'
_computing_data_collection       'Crystalclear (Rigaku/MSC, 2005)'
_computing_data_reduction        'Crystalclear (Rigaku/MSC, 2005)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'SHELXTL (Bruker, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0327
_diffrn_reflns_av_sigmaI/netI    0.0303
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4971
_diffrn_reflns_theta_full        27.83
_diffrn_reflns_theta_max         27.83
_diffrn_reflns_theta_min         2.52
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.996
_exptl_absorpt_correction_T_min  0.982
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Crystalclear; Rigaku/MSC, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             284
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.182
_refine_ls_abs_structure_details 'None, Friedel Pairs merged'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     178
_refine_ls_number_reflns         1605
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0304
_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^)+(0.0493P)^2^+0.0251P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0755
_refine_ls_wR_factor_ref         0.0769
_reflns_number_gt                1508
_reflns_number_total             1605
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt2557.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 '222.0-224.0' was changed to
'223.0(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 '222.0-224.0' was changed to
'223.0(10)' - the average value was taken and precision was
estimated.

'_symmetry_cell_setting' value 'Monoclinic' changed to
'monoclinic' 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_original_sg_symbol_H-M      'P 21'
_cod_database_code               2216273
_cod_database_fobs_code          2216273