5α-Dihydrovespertilin acetate
Benn, Michael; Vohra, Kanwal Nain; Parvez, Masood; Acta Crystallographica Section E 66 (2010) o598–; doi:10.1107/S160053681000512X

data_2225314
_publ_section_title
;
 5\a-Dihydrovespertilin acetate
;
_journal_coeditor_code           LH2988
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o598
_journal_paper_doi               10.1107/S160053681000512X
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C24 H36 O4'
_chemical_formula_moiety         'C24 H36 O4'
_chemical_formula_sum            'C24 H36 O4'
_chemical_formula_weight         388.53
_chemical_melting_point_gt       492
_chemical_melting_point_lt       493
_chemical_name_common            '5\a-Dihydrovespertilin acetate'
_chemical_name_systematic
(20<i>S</i>)-3\b-acetoxy-16\a-hydroxy-22,23-bisnor-5\a,17\b-cholano(22-16)lactone
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.4256(3)
_cell_length_b                   9.6527(6)
_cell_length_c                   34.953(2)
_cell_measurement_reflns_used    2395
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1.0
_cell_volume                     2167.9(2)
_computing_cell_refinement       'HKL DENZO (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction        'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device_type  'Nonius APEXII CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.028
_diffrn_reflns_av_sigmaI/netI    0.033
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       45
_diffrn_reflns_limit_l_min       -44
_diffrn_reflns_number            8349
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.7
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.998
_exptl_absorpt_correction_T_min  0.977
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SORTAV; Blessing, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.190
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.20
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.11
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         2784
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.11
_refine_ls_R_factor_all          0.057
_refine_ls_R_factor_gt           0.051
_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^)+(0.037P)^2^+1.01P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.113
_refine_ls_wR_factor_ref         0.119
_reflns_number_gt                2554
_reflns_number_total             2784
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh2988.cif
_cod_data_source_block           I
_cod_database_code               2225314
_cod_database_fobs_code          2225314