#------------------------------------------------------------------------------
#$Date: 2024-12-11 16:15:11 +0200 (Wed, 11 Dec 2024) $
#$Revision: 296843 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/00/07/2000720.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2000720
loop_
_publ_author_name
'Rychlewska, U.'
'Szczepańska, B.'
'Serkerov, S. V.'
_publ_section_title
;
 Two eudesmanolide-type sesquiterpene lactones from Umbelliferae
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1543
_journal_page_last               1547
_journal_paper_doi               10.1107/S0108270192004268
_journal_volume                  48
_journal_year                    1992
_chemical_formula_sum            'C20 H26 O4'
_chemical_formula_weight         330.43
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90.0
_cell_angle_beta                 90.920(10)
_cell_angle_gamma                90.0
_cell_formula_units_Z            2
_cell_length_a                   8.0350(10)
_cell_length_b                   7.2080(10)
_cell_length_c                   15.887(3)
_cell_measurement_reflns_used    15
_cell_measurement_temperature    292
_cell_measurement_theta_max      14.1
_cell_measurement_theta_min      8.7
_cell_volume                     920.0(2)
_diffrn_measurement_device       'Syntax P21'
_diffrn_measurement_method       θ/2θ
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.025
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2710
_diffrn_reflns_theta_max         58
_diffrn_standards_decay_%        .0
_diffrn_standards_interval_count 98
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.62
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.193
_exptl_crystal_density_meas      1.12
_exptl_crystal_description       Needle
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.22
_refine_diff_density_min         -0.22
_refine_ls_extinction_coef       0.6(4)x10^-6^
_refine_ls_extinction_method     F^*^c=Fc(1-xF²c/sinθ)
_refine_ls_goodness_of_fit_obs   3.1
_refine_ls_hydrogen_treatment    refU
_refine_ls_number_parameters     231
_refine_ls_number_reflns         2155
_refine_ls_R_factor_obs          0.041
_refine_ls_shift/esd_max         0.49
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[σ²(F)+0.0001F²]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         0.051
_reflns_number_observed          2156
_reflns_number_total             2491
_reflns_observed_criterion       I>=1.96\s(I)
_cod_data_source_file            na1003.cif
_cod_data_source_block           na1003b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value '1/[\s^2^(F)+0.0001F^2^]' 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^(F)+0.0001F^2^]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2000720
loop_
_space_group_symop_id
_space_group_symop_operation_xyz
1 x,y,z
2 -x,y+1/2,-z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_attached_hydrogens
C(1) C .5282(4) .2000(5) .7872(2) .00610(10) 1
C(2) C .3880(4) .2514(5) .7281(2) .00680(10) 1
C(3) C .3890(4) .2110(5) .6471(2) .00660(10) 1
C(4) C .5252(4) .1129(5) .6072(2) .00590(10) 0
C(5) C .6642(3) .0430(5) .6657(2) .00500(10) 1
C(6) C .8261(3) .0040(5) .6199(2) .00520(10) 1
C(7) C .9794(3) -.0159(5) .6765(2) .00530(10) 1
C(8) C .9282(4) -.0694(5) .7651(2) .00620(10) 2
C(9) C .8271(4) .0913(6) .8026(2) .00680(10) 2
C(10) C .6938(4) .1730(5) .7413(2) .00560(10) 0
C(11) C 1.0820(3) -.1632(5) .6291(2) .00580(10) 1
C(12) C .9532(4) -.2713(6) .5833(2) .00610(10) 0
C(13) C 1.2053(5) -.2797(6) .6801(2) .0086(2) 3
C(14) C .7477(4) .3679(5) .7113(2) .00780(10) 3
C(15) C .5209(5) .0840(6) .5240(2) .0082(2) 2
C(16) C .3746(4) .0227(5) .8879(2) .00620(10) 0
C(17) C .3482(4) -.1675(6) .9223(2) .00670(10) 0
C(18) C .2258(5) -.2019(7) .9738(2) .00860(10) 1
C(19) C .0980(5) -.0765(7) 1.0060(3) .0100(2) 3
C(20) C .4706(6) -.3180(6) .8952(3) .0092(2) 3
O(1) O .4882(2) .0197(4) .82650(10) .00620(10) 0
O(6) O .8087(2) -.1771 .57790(10) .00620(10) 0
O(12) O .9650(3) -.4243(4) .55220(10) .00840(10) 0
O(16) O .3075(3) .1629(5) .9100(2) .00880(10) 0
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C(10) C(1) O(1) 106.5(3)
C(2) C(1) O(1) 108.4(2)
C(2) C(1) C(10) 112.4(3)
C(1) C(2) C(3) 122.6(3)
C(2) C(3) C(4) 123.2(3)
C(3) C(4) C(15) 119.9(3)
C(3) C(4) C(5) 116.3(3)
C(5) C(4) C(15) 123.8(3)
C(4) C(5) C(10) 112.1(2)
C(4) C(5) C(6) 113.0(3)
C(6) C(5) C(10) 111.2(2)
C(5) C(6) O(6) 107.7(2)
C(5) C(6) C(7) 115.1(2)
C(7) C(6) O(6) 104.8(2)
C(6) C(7) C(11) 102.1(2)
C(6) C(7) C(8) 110.0(2)
C(8) C(7) C(11) 115.5(3)
C(7) C(8) C(9) 108.6(3)
C(8) C(9) C(10) 113.9(3)
C(5) C(10) C(9) 110.8(3)
C(1) C(10) C(9) 110.1(3)
C(1) C(10) C(5) 108.8(2)
C(9) C(10) C(14) 110.1(3)
C(5) C(10) C(14) 110.7(3)
C(1) C(10) C(14) 106.2(3)
C(7) C(11) C(13) 117.8(3)
C(7) C(11) C(12) 103.1(2)
C(12) C(11) C(13) 114.6(3)
C(11) C(12) O(12) 128.4(3)
C(11) C(12) O(6) 111.2(3)
O(6) C(12) O(12) 120.4(3)
O(1) C(16) O(16) 122.6(3)
C(17) C(16) O(16) 126.8(3)
C(17) C(16) O(1) 110.6(3)
C(16) C(17) C(20) 116.9(3)
C(16) C(17) C(18) 120.9(4)
C(18) C(17) C(20) 122.2(4)
C(17) C(18) C(19) 129.6(4)
C(1) O(1) C(16) 116.5(3)
C(6) O(6) C(12) 110.0(2)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
C(1) C(2) 1.501(4)
C(1) C(10) 1.540(5)
C(1) O(1) 1.479(4)
C(2) C(3) 1.320(4)
C(3) C(4) 1.457(5)
C(4) C(5) 1.527(4)
C(4) C(15) 1.338(4)
C(5) C(6) 1.527(4)
C(5) C(10) 1.539(5)
C(6) C(7) 1.520(4)
C(6) O(6) 1.472(4)
C(7) C(8) 1.522(4)
C(7) C(11) 1.547(4)
C(8) C(9) 1.540(5)
C(9) C(10) 1.552(5)
C(10) C(14) 1.548(5)
C(11) C(12) 1.478(5)
C(11) C(13) 1.522(5)
C(12) O(6) 1.347(4)
C(12) O(12) 1.213(5)
C(16) C(17) 1.492(6)
C(16) O(1) 1.347(4)
C(16) O(16) 1.200(5)
C(17) C(18) 1.313(5)
C(17) C(20) 1.531(6)
C(18) C(19) 1.466(6)
loop_
_cod_changelog_entry_id
_cod_changelog_entry_author
_cod_changelog_entry_date
_cod_changelog_entry_text
1 'Vaitkus, Antanas' 2018-02-09T11:46:31+02:00
;
 Marked attached hydrogen atoms.
;
2 'Vaitkus, Antanas' 2024-12-11T16:12:30+02:00
;
 Added the '_atom_site_type_symbol' data item.
;
