DDQ-Mediated Oxidative Coupling: An Approach to 2,3-Dicyanofuran (Thiophene).
Wang, Zheng-Lin; Li, Hong-Liang; Ge, Li-Shi; An, Xing-Lan; Zhang, Zi-Gang; Luo, Xiaoyan; Fossey, John S.; Deng, Wei-Ping; The Journal of organic chemistry 79 (2014) 1156–; doi:10.1021/jo4026034

data_4029016
_publ_section_title
;
 DDQ-Mediated Oxidative Coupling: An Approach to 2,3-Dicyanofuran
 (Thiophene).
;
_journal_issue                   3
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              1156
_journal_paper_doi               10.1021/jo4026034
_journal_volume                  79
_journal_year                    2014
_chemical_formula_sum            'C15 H11 N3 O S'
_chemical_formula_weight         281.33
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 109.477(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1738(11)
_cell_length_b                   21.296(3)
_cell_length_c                   8.4023(11)
_cell_measurement_reflns_used    3055
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      54.496
_cell_measurement_theta_min      5.286
_cell_volume                     1378.9(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0563
_diffrn_reflns_av_sigmaI/netI    0.0571
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            7757
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.233
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.20751
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.212
_exptl_crystal_size_mid          0.154
_exptl_crystal_size_min          0.112
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.370
_refine_diff_density_rms         0.097
_refine_ls_extinction_coef       0.046(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         2567
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0635
_refine_ls_R_factor_gt           0.0573
_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^)+(0.0781P)^2^+0.2255P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1382
_refine_ls_wR_factor_ref         0.1445
_reflns_number_gt                2178
_reflns_number_total             2567
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo4026034_si_003.cif
_cod_data_source_block           cd213341
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4029016