(25<i>R</i>)-1α,2α-Epoxy-3α-hydroxy-5α-spirostan-6-one
Castro-Méndez, Albina; Bernès, Sylvain; Sandoval-Ramírez, Jesús; Acta Crystallographica Section E 60 (2004) o1133–o1134; doi:10.1107/S1600536804013467

data_2203903
_publ_section_title
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 (25<i>R</i>)-1\a,2\a-Epoxy-3\a-hydroxy-5\a-spirostan-6-one
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1133
_journal_page_last               o1134
_journal_paper_doi               10.1107/S1600536804013467
_journal_volume                  60
_journal_year                    2004
_chemical_formula_moiety         'C27 H40 O5'
_chemical_formula_sum            'C27 H40 O5'
_chemical_formula_weight         444.59
_chemical_melting_point          531
_chemical_name_systematic
(25R)-1\a,2\a-epoxy-3\a-hydroxy-5\a-spirostan-6-one
_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   'See text'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL-Plus
_cell_angle_alpha                90.00
_cell_angle_beta                 101.464(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.9714(9)
_cell_length_b                   7.7711(8)
_cell_length_c                   14.3786(11)
_cell_measurement_reflns_used    71
_cell_measurement_temperature    298.0(10)
_cell_measurement_theta_max      12.01
_cell_measurement_theta_min      3.77
_cell_volume                     1201.46(18)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1996)'
_computing_data_reduction        XSCANS
_computing_molecular_graphics    SHELXTL-Plus
_computing_publication_material  SHELXTL-Plus
_computing_structure_refinement  SHELXTL-Plus
_computing_structure_solution    'SHELXTL-Plus (Sheldrick, 1998)'
_diffrn_ambient_temperature      298.0(10)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0346
_diffrn_reflns_av_sigmaI/netI    0.0446
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       1
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            4919
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.89
_diffrn_standards_decay_%        1.5
_diffrn_standards_interval_count 48
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             484
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.155
_refine_diff_density_min         -0.169
_refine_ls_extinction_coef       0.012(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     293
_refine_ls_number_reflns         2282
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0678
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0538P)^2^+0.0998P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0947
_refine_ls_wR_factor_ref         0.1142
_reflns_number_gt                1591
_reflns_number_total             2282
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hg6053.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:

'_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               2203903
_cod_database_fobs_code          2203903