Filic-3-ene, a pentacyclic triterpene from <i>Davallia canariensis</i>
González-Platas, Javier; Ruiz-Pérez, Catalina; González, Antonio G.; Hernández Silva, Margarita; García, Candelaria; Alfayate, M. Carmen; Bermejo, Jaime; Acta Crystallographica Section C 55 (1999) 1835–1837; doi:10.1107/S0108270199009762

data_2009141
_publ_section_title
;
 Filic-3-ene, a pentacyclic triterpene from <i>Davallia canariensis</i>
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1835
_journal_page_last               1837
_journal_paper_doi               10.1107/S0108270199009762
_journal_volume                  55
_journal_year                    1999
_chemical_formula_sum            'C30 H50'
_chemical_formula_weight         410.70
_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'
_audit_creation_method           'form.cif (version 2.0)'
_cell_angle_alpha                90.00
_cell_angle_beta                 99.020(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.015(2)
_cell_length_b                   7.678(3)
_cell_length_c                   30.045(4)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      18.56
_cell_measurement_theta_min      10.08
_cell_volume                     2509.6(11)
_computing_cell_refinement       'CAD-4 EXPRESS'
_computing_data_collection       'CAD-4 EXPRESS (Enraf-Nonius, 1994)'
_computing_data_reduction        'HELENA (Spek, 1997)'
_computing_molecular_graphics    'PLATON (Spek, 1990)'
_computing_publication_material  PLATON
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1998)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.0
_diffrn_measured_fraction_theta_max 1.0
_diffrn_measurement_device_type  'Enraf-Nonius CAD4'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0467
_diffrn_reflns_av_sigmaI/netI    0.0816
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            9325
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.37
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  120
_diffrn_standards_number         1
_exptl_absorpt_coefficient_mu    0.060
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.087
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.210
_refine_diff_density_min         -0.205
_refine_ls_abs_structure_details '(see Exptl.)'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.884
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     557
_refine_ls_number_reflns         6197
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.884
_refine_ls_R_factor_all          0.1598
_refine_ls_R_factor_gt           0.0598
_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^)+(0.1246P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1971
_reflns_number_gt                3020
_reflns_number_total             6197
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jz1362.cif
_cod_data_source_block           global
_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               2009141