4-Methoxy-5-[4-(4-methoxy-1,3-benzodioxol-5-yl)perhydro-1<i>H</i>,3<i>H</i>-furo[3,4-<i>c</i>]furan-1-yl]-1,3-benzodioxole
Ezhilmuthu, Rukmani Perumal; Vembu, Nagarajan; Sulochana, Nagarajan; Acta Crystallographica Section E 64 (2008) o1306–o1307; doi:10.1107/S1600536808018138

data_2218675
_publ_section_title
4-Methoxy-5-[4-(4-methoxy-1,3-benzodioxol-5-yl)perhydro-1<i>H</i>,3<i>H</i>-furo[3,4-<i>c</i>]furan-1-yl]-1,3-benzodioxole
_journal_coeditor_code           DN2355
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1306
_journal_page_last               o1307
_journal_paper_doi               10.1107/S1600536808018138
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C22 H22 O8'
_chemical_formula_moiety         'C22 H22 O8'
_chemical_formula_sum            'C22 H22 O8'
_chemical_formula_weight         414.40
_chemical_name_systematic
;
rac-4-Methoxy-5-[4-(4-methoxy-1,3-benzodioxol-5-yl)perhydro-
1<i>H</i>,3<i>H</i>-furo[3,4-<i>c</i>]furan-1-yl]-1,3-benzodioxole
;
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.97(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.754(5)
_cell_length_b                   13.982(4)
_cell_length_c                   14.672(5)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      14
_cell_measurement_theta_min      10
_cell_volume                     965.8(11)
_computing_cell_refinement       'CAD-4 Software (Enraf--Nonius, 1994)'
_computing_data_collection       'CAD-4 Software (Enraf--Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo,1995)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Enraf--Nonius CAD-4'
_diffrn_measurement_method       \w-2\q
_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  0.0089
_diffrn_reflns_av_sigmaI/netI    0.0178
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2000
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 100
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.109
_exptl_absorpt_correction_T_max  0.9989
_exptl_absorpt_correction_T_min  0.8053
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North <i>et al.</i>,  1968)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.196
_refine_diff_density_min         -0.198
_refine_ls_extinction_coef       0.015(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         1777
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0508
_refine_ls_R_factor_gt           0.0404
_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^)+(0.0741P)^2^+0.1102P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1027
_refine_ls_wR_factor_ref         0.1100
_reflns_number_gt                1505
_reflns_number_total             1777
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            dn2355.cif
_cod_data_source_block           I
_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_cell_volume        965.8(10)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2218675
_cod_database_fobs_code          2218675