(±)-Asarinin
Negi, Devendra Singh; Negi, Nisha; Kumar, Ashok; Matsunami, Katsuyoshi; Schulz, Stefan; Jones, Peter G.; Acta Crystallographica Section C 69 (2013) 87–89; doi:10.1107/S0108270112049657

data_2018741
_publ_section_title
;
 (+-)-Asarinin
;
_journal_coeditor_code           FA3296
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              87
_journal_page_last               89
_journal_paper_doi               10.1107/S0108270112049657
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C20 H18 O6'
_chemical_formula_moiety         'C20 H18 O6'
_chemical_formula_sum            'C20 H18 O6'
_chemical_formula_weight         354.34
_chemical_name_common            asarinin
_chemical_name_systematic
(1<i>RS</i>,3a<i>RS</i>,4<i>SS</i>,6a<i>RS</i>)-1,4-bis(benzo[<i>d</i>][1,3]dioxol-5-yl)hexahydrofuro[3,4-<i>c</i>]furan
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                103.793(6)
_cell_angle_beta                 102.111(6)
_cell_angle_gamma                95.836(6)
_cell_formula_units_Z            2
_cell_length_a                   6.5002(4)
_cell_length_b                   10.8931(7)
_cell_length_c                   11.8005(8)
_cell_measurement_reflns_used    33759
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      75.7128
_cell_measurement_theta_min      3.9725
_cell_volume                     783.22(9)
_computing_cell_refinement       'CrysAlisPro (Agilent, 2012)'
_computing_data_collection       'CrysAlisPro (Agilent, 2012)'
_computing_data_reduction        'CrysAlisPro (Agilent, 2012)'
_computing_molecular_graphics    'XP (Siemens, 1994)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.3543
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type
'Oxford Xcalibur diffractometer with Nova source and Atlas detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Nova (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0273
_diffrn_reflns_av_sigmaI/netI    0.0084
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            41535
_diffrn_reflns_theta_full        75.00
_diffrn_reflns_theta_max         75.90
_diffrn_reflns_theta_min         3.98
_exptl_absorpt_coefficient_mu    0.928
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.77018
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlisPro; Agilent, 2012)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.503
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tablet
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.213
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3254
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0351
_refine_ls_R_factor_gt           0.0348
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0399P)^2^+0.3692P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0857
_refine_ls_wR_factor_ref         0.0860
_reflns_number_gt                3200
_reflns_number_total             3254
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fa3296.cif
_cod_data_source_block           I
_cod_database_code               2018741
_cod_database_fobs_code          2018741