Highly mild approach towards synthesis of tetrasubstituted thiophenes by an organic salt afforded by cyclic thioureas and ketene dithioacetals
Alizadeh, Abdolali; Vahabi, Amir Hossein; Bazgir, Ayoob; Khavasi, Hamid Reza; Zhu, Zhe; Ng, Seik Weng; RSC Adv. 5 (2015) 85028–; doi:10.1039/C5RA15544D

data_7222457
_publ_section_title
;
 Highly mild approach towards synthesis of tetrasubstituted thiophenes by
 an organic salt afforded by cyclic thioureas and ketene dithioacetals
;
_journal_issue                   103
_journal_name_full               'RSC Adv.'
_journal_page_first              85028
_journal_paper_doi               10.1039/C5RA15544D
_journal_volume                  5
_journal_year                    2015
_chemical_formula_sum            'C9 H12 N4 S3'
_chemical_formula_weight         272.44
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-09-14 deposited with the CCDC.
2015-09-23 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.5299(17)
_cell_length_b                   7.0738(14)
_cell_length_c                   12.0531(17)
_cell_measurement_reflns_used    4774
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.00
_cell_measurement_theta_min      2.62
_cell_volume                     1324.1(4)
_computing_cell_refinement       'X-Area 1.31 (Stoe & Cie GmbH, 2005)'
_computing_data_collection       'X-Area 1.31 (Stoe & Cie GmbH, 2005)'
_computing_data_reduction        'X-Area 1.31 (Stoe & Cie GmbH, 2005)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean '0.15 mm'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'STOE IPDS 2T'
_diffrn_measurement_method       'rotation method'
_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  0.0764
_diffrn_reflns_av_unetI/netI     0.0644
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            4774
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         2.62
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.539
_exptl_absorpt_correction_T_max  0.9801
_exptl_absorpt_correction_T_min  0.9354
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'shape of crystal determined optically'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.367
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.260
_refine_diff_density_min         -0.252
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     99
_refine_ls_number_reflns         1553
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.1010
_refine_ls_R_factor_gt           0.0542
_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^)+(0.0498P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0981
_refine_ls_wR_factor_ref         0.1106
_reflns_number_gt                990
_reflns_number_total             1553
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra15544d1.cif
_cod_data_source_block           added_by_encifer
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 
;
_cod_original_sg_symbol_H-M      Pnma
_cod_database_code               7222457