(1α,12α)-Ethyl 15-ethoxy-4-hydroxy-2-oxo-9-oxatetracyclo[10.2.2.0^1,10^.0^3,8^]hexadeca-4,6,8,13-tetraene-13-carboxylate
Heredia-Moya, Jorge; Krohn, Karsten; Flörke, Ulrich; Araya-Maturana, Ramiro; Acta Crystallographica Section E 62 (2006) o3636–o3638; doi:10.1107/S1600536806029175

data_2210179
_publ_section_title
;(1\a,12\a)-Ethyl
 15-ethoxy-4-hydroxy-2-oxo-9-oxatetracyclo[10.2.2.0^1,10^.0^3,8^]hexadeca-4,6,8,13-tetraene-13-carboxylate
;
_journal_coeditor_code           CS2012
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3636
_journal_page_last               o3638
_journal_paper_doi               10.1107/S1600536806029175
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C20 H22 O6'
_chemical_formula_moiety         'C20 H22 O6'
_chemical_formula_sum            'C20 H22 O6'
_chemical_formula_weight         358.38
_chemical_name_systematic
;
(1\a,12\a)-Ethyl
15-ethoxy-4-hydroxy-2-oxo-9-oxatetracyclo[10,2,2,01,10,3,8]hexadeca-
4,6,8,13-tetraene-13-carboxylate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.909(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.6328(11)
_cell_length_b                   11.3075(15)
_cell_length_c                   18.312(2)
_cell_measurement_reflns_used    4611
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      28.01
_cell_measurement_theta_min      2.26
_cell_volume                     1760.9(4)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        'SAINT (Bruker, 2002)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2002)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0279
_diffrn_reflns_av_sigmaI/netI    0.0243
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            19861
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.13
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  450
_diffrn_standards_number         466
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.973
_exptl_absorpt_correction_T_min  0.944
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2002)'
_exptl_crystal_colour            'light green'
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.35
_refine_diff_density_min         -0.21
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         4027
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0520
_refine_ls_R_factor_gt           0.0421
_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^)+(0.0567P)^2^+0.5098P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1072
_refine_ls_wR_factor_ref         0.1132
_reflns_number_gt                3367
_reflns_number_total             4027
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cs2012.cif
_cod_data_source_block           3
_cod_original_cell_volume        1760.8(4)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2210179
_cod_database_fobs_code          2210179