3-Acetonylbicyclo[6.3.0]undecane-2,6-dione, (I), 7-Acetonyl-4,4-dimethylbicyclo[6.3.0]undecane-2,6-dione, (II), 7,12-Dihydroxy-12-methyltetracyclo[8.2.1.0^1,5^.0^7,11^]tridecan-13-one Monohydrate, (III), and 8,8-Dimethyltricyclo[9.3.0.0^2,6^]tetradec-5-ene-4,10-dione, (IV)
Ohba, Shigeru; Umehara, Misao; Acta Crystallographica Section C 53 (1997) 616–620; doi:10.1107/S0108270196015661

data_2006134
_publ_section_title
;
 3-Acetonylbicyclo[6.3.0]undecane-2,6-dione, (I),
 7-Acetonyl-4,4-dimethylbicyclo[6.3.0]undecane-2,6-dione, (II),
 7,12-Dihydroxy-12-methyltetracyclo[8.2.1.0^1,5^.0^7,11^]tridecan-13-one
 Monohydrate, (III), and
 8,8-Dimethyltricyclo[9.3.0.0^2,6^]tetradec-5-ene-4,10-dione, (IV)
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              616
_journal_page_last               620
_journal_paper_doi               10.1107/S0108270196015661
_journal_volume                  53
_journal_year                    1997
_chemical_formula_moiety         'C14 H20 O3'
_chemical_formula_sum            'C14 H20 O3'
_chemical_formula_weight         236.31
_chemical_melting_point          370.0(10)
_chemical_name_systematic
;
3-acetonylbicyclo[6.3.0]undecane-2,6-dione
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yab'
_space_group_name_H-M_alt        'P 1 21/a 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90
_cell_angle_beta                 96.850(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.2670(10)
_cell_length_b                   8.5050(10)
_cell_length_c                   14.9960(10)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298
_cell_measurement_theta_max      15
_cell_measurement_theta_min      10
_cell_volume                     1300.1(2)
_computing_cell_refinement       'AFC/MSC Diffractometer Control System'
_computing_data_collection
'AFC/MSC Diffractometer Control System (Rigaku Corporation, 1993)'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    CRYSTAN-GM
_computing_publication_material  CRYSTAN-GM
_computing_structure_refinement  CRYSTAN-GM
_computing_structure_solution
'CRYSTAN-GM (Edwards, Gilmore, Mackay & Stewart, 1995)'
_diffrn_ambient_temperature      299
_diffrn_measurement_device       'Rigaku AFC-5'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         xray_tube
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.011
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            3157
_diffrn_reflns_theta_max         26.4
_diffrn_reflns_theta_min         2.0
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_description       prism
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.20
_refine_diff_density_min         -0.21
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_obs   1.16
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     234
_refine_ls_number_reflns         1834
_refine_ls_R_factor_obs          .0605
_refine_ls_shift/esd_max         0.059
_refine_ls_shift/esd_mean        0.0049
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(F) + 0.000225F^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         .0529
_reflns_number_observed          1834
_reflns_number_total             2985
_reflns_observed_criterion       '|F~o~| > 3\s(|F~o~|)'
_cod_data_source_file            oa1017.cif
_cod_data_source_block           ac58
_cod_depositor_comments
;
 Updating space group information and adding the symmetry operation list.

 Antanas Vaitkus,
 2018-06-17

The following automatic conversions were performed:

'_chemical_melting_point' value '369-371' was changed to '370.0(10)'
- the average value was taken and precision was
estimated.

'_atom_site_thermal_displace_type' tag value 'Uij' was
replaced with 'Uani' value 17 times.

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 '369-371' was changed to '370.0(10)'
- the average value was taken and precision was estimated.

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

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w = 1/[\s^2^(F) +
0.000225F^2^]' was changed to 'calc'. New tag
'_refine_ls_weighting_details' was created. The value of the new tag
was set to 'w = 1/[\s^2^(F) + 0.000225F^2^]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/a'
_cod_database_code               2006134