Molecular and crystal properties of <i>E</i>-1,2-bis(3-methoxy-2-thienyl)ethene: static disorder in the crystal
Blockhuys, Frank; Vande Velde, Christophe M. L.; Maes, Stefan T.; Peten, Carl; Geise, Herman J.; Van Alsenoy, Christian; Lenstra, Albert T. H.; Acta Crystallographica Section B 59 (2003) 770–778; doi:10.1107/S0108768103021013

data_2104002
_publ_section_title
;
 Molecular and crystal properties of
 <i>E</i>-1,2-bis(3-methoxy-2-thienyl)ethene: static disorder in the
 crystal
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              770
_journal_page_last               778
_journal_paper_doi               10.1107/S0108768103021013
_journal_volume                  59
_journal_year                    2003
_chemical_formula_moiety         'C12 H12 O2 S2'
_chemical_formula_sum            'C12 H12 O2 S2'
_chemical_formula_weight         252.34
_chemical_melting_point          395.1(10)
_chemical_name_common            BMTE
_chemical_name_systematic
;
E-1,2-bis(3-methoxy-2-thienyl)ethene
;
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000(2)
_cell_angle_beta                 90.000(2)
_cell_angle_gamma                90.000(2)
_cell_formula_units_Z            4
_cell_length_a                   7.765(2)
_cell_length_b                   11.590(2)
_cell_length_c                   13.172(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      21
_cell_measurement_theta_min      11
_cell_volume                     1185.4(4)
_computing_cell_refinement       'CAD4 Express (Enraf Nonius, 1994)'
_computing_data_collection       'CAD4 Express (Enraf Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'MolEN (Fair, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_measured_fraction_theta_full 0.453
_diffrn_measured_fraction_theta_max 0.453
_diffrn_measurement_device_type  'Enraf-Nonius CAD4'
_diffrn_measurement_method       'non-profiled \w/2\q scans'
_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  0.0144
_diffrn_reflns_av_sigmaI/netI    0.0156
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            19748
_diffrn_reflns_theta_full        66.84
_diffrn_reflns_theta_max         66.84
_diffrn_reflns_theta_min         3.09
_diffrn_standards_decay_%        6
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.430
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red-brown
_exptl_crystal_density_diffrn    1.414
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       octahedral
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.455
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     123
_refine_ls_number_reflns         4866
_refine_ls_number_restraints     21
_refine_ls_restrained_S_all      1.429
_refine_ls_R_factor_all          0.0829
_refine_ls_R_factor_gt           0.0424
_refine_ls_shift/su_max          0.031
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0537P)^2^+0.2644P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1087
_refine_ls_wR_factor_ref         0.1278
_reflns_number_gt                3025
_reflns_number_total             4866
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bm5001.cif
_cod_data_source_block           bith93dis
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '121-123\%C' was changed to
'395.1(10)' - it was converted from degrees Celsius(C) to Kelvins(K),
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               2104002