2,5-Diethoxy-1,4-bis(3,4-ethylenedioxy-2-thienyl)benzene and its Tetrahydrofuran 0.33-Solvate
Abboud, Khalil A.; Irvin, David J.; Reynolds, John R.; Acta Crystallographica Section C 54 (1998) 1994–1997; doi:10.1107/S0108270198009536

data_2007916
_publ_section_title
;
 2,5-Diethoxy-1,4-bis(3,4-ethylenedioxy-2-thienyl)benzene and its
 Tetrahydrofuran 0.33-Solvate
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1994
_journal_page_last               1997
_journal_paper_doi               10.1107/S0108270198009536
_journal_volume                  54
_journal_year                    1998
_chemical_formula_sum            'C22 H22 O6 S2'
_chemical_formula_weight         446.52
_chemical_name_systematic
;
 2,5-Diethoxy-1,4-bis(3,4-ethylenedioxy-2-thienyl)benzene
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.0267(2)
_cell_length_b                   11.3835(2)
_cell_length_c                   14.5357(2)
_cell_measurement_reflns_used    8192
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1.5
_cell_volume                     1990.02(6)
_computing_cell_refinement       'SMART and SAINT (Siemens, 1995)'
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SHELXTL (Sheldrick, 1995)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXL97
_computing_structure_refinement  SHELXL97
_computing_structure_solution    'SHELXL97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.99
_diffrn_measured_fraction_theta_max 0.99
_diffrn_measurement_device_type  'Siemens SMART platform/CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.027
_diffrn_reflns_av_sigmaI/netI    0.019
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            30066
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.80
_diffrn_standards_decay_%        '< 1'
_exptl_absorpt_coefficient_mu    0.307
_exptl_absorpt_correction_T_max  0.956
_exptl_absorpt_correction_T_min  0.797
_exptl_absorpt_correction_type   'Empirical (Blessing, 1995)'
_exptl_crystal_colour            Orange--brown
_exptl_crystal_density_diffrn    1.490
_exptl_crystal_density_meas      ?
_exptl_crystal_description       'Plate '
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.38
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         2292
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.041
_refine_ls_R_factor_gt           0.035
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0475P)^2^+1.0729P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.099
_reflns_number_gt                2009
_reflns_number_total             2292
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fg1445.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 'Orthorhombic' changed to
'orthorhombic' 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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0475P)^2^+1.0729P] where P=(Fo^2^+2Fc^2^)/3' 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^(Fo^2^)+(0.0475P)^2^+1.0729P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2007916