Methyl 3-dehydroxy-3-oxoursolate
Awang, Khalijah; Abdullah, Nor Hayati; Thomas, Noel F.; Ng, Seik Weng; Acta Crystallographica Section E 65 (2009) o2113–; doi:10.1107/S1600536809030669

data_2223232
_publ_section_title
;
 Methyl 3-dehydroxy-3-oxoursolate
;
_journal_coeditor_code           XU2575
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2113
_journal_paper_doi               10.1107/S1600536809030669
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C31 H48 O3'
_chemical_formula_moiety         'C31 H48 O3'
_chemical_formula_sum            'C31 H48 O3'
_chemical_formula_weight         468.69
_chemical_name_systematic
;
Methyl 3-dehydroxy-3-oxoursolate
;
_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                   8.0298(2)
_cell_length_b                   8.4775(2)
_cell_length_c                   39.0492(7)
_cell_measurement_reflns_used    4540
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.2
_cell_measurement_theta_min      2.5
_cell_volume                     2658.18(10)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker,2008)'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material  'publCIF (Westrip, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELX-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX'
_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  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0303
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       49
_diffrn_reflns_limit_l_min       -50
_diffrn_reflns_number            18588
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.04
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.171
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.274
_refine_diff_density_min         -0.184
_refine_ls_abs_structure_details 'Friedel pairs were merged.'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     315
_refine_ls_number_reflns         3500
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0424
_refine_ls_R_factor_gt           0.0374
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0528P)^2^+0.4713P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.0952
_reflns_number_gt                3188
_reflns_number_total             3500
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            xu2575.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.

'_exptl_absorpt_correction_type' value 'None' changed to
'none' 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.

'_exptl_absorpt_correction_type' value 'None' changed to
'none' 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_cell_volume        2658.20(10)
_cod_database_code               2223232
_cod_database_fobs_code          2223232