Triterpenoide. XVIII. Kristallstrukturen von 2-Oxo- und 3-Oxo-18β-olean-12-en-28-säure-methylestern
Gzella, Andrzej; Acta Crystallographica Section C 55 (1999) 2153–2156; doi:10.1107/S0108270199011567

data_2009290
_publ_section_title
;
 Triterpenoide. XVIII. Kristallstrukturen von 2-Oxo- und
 3-Oxo-18\b-olean-12-en-28-s\"aure-methylestern
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              2153
_journal_page_last               2156
_journal_paper_doi               10.1107/S0108270199011567
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C31 H48 O3'
_chemical_formula_sum            'C31 H48 O3'
_chemical_formula_weight         468.69
_chemical_name_systematic
;
2-Oxo-18\b-olean-12-en-28-oic acid methyl ester
;
_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'
_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                   11.3083(12)
_cell_length_b                   13.5950(12)
_cell_length_c                   17.9710(14)
_cell_measurement_reflns_used    45
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.8
_cell_measurement_theta_min      15.3
_cell_volume                     2762.8(4)
_computing_cell_refinement       'KM-4 Software'
_computing_data_collection       'KM-4 Software (Kuma Diffraction, 1991)'
_computing_data_reduction        'KM-4 Software'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Kuma Diffraction KM-4'
_diffrn_measurement_method       \w--2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.016
_diffrn_reflns_av_sigmaI/netI    0.018
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5247
_diffrn_reflns_theta_full        70.11
_diffrn_reflns_theta_max         70.11
_diffrn_reflns_theta_min         4.08
_diffrn_standards_decay_%        2.6
_diffrn_standards_interval_count 100
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.540
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.127
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.29
_refine_diff_density_max         0.167
_refine_diff_density_min         -0.141
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   0.2(2)
_refine_ls_extinction_coef       0.00185(18)
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         4890
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.038
_refine_ls_R_factor_gt           0.031
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0504P)^2^+0.3475P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.090
_reflns_number_gt                4478
_reflns_number_total             4890
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jz1361.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:

'_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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0504P)^2^+0.3475P] where P=(Fo^2^+2Fc^2^)/3' 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^(Fo^2^)+(0.0504P)^2^+0.3475P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2009290