Thionation of Mesoionics with Isothiocyanates: Evidence Supporting a Four-Step Domino Process and Ruling Out a [2 + 2] Mechanism
David Cantillo; Martín Ávalos; Reyes Babiano; Pedro Cintas; José L. Jiménez; Mark E. Light; Juan C. Palacios; Journal of Organic Chemistry 74 (2009) 3698–3705; doi:10.1021/jo900028c

data_4024525
_publ_section_title
;
Thionation of Mesoionics with Isothiocyanates: Evidence Supporting a
Four-Step Domino Process and Ruling Out a [2 + 2] Mechanism
;
_journal_coden_Cambridge         1078
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              3698
_journal_page_last               3705
_journal_paper_doi               10.1021/jo900028c
_journal_volume                  74
_journal_year                    2009
_chemical_compound_source        'Pedro Cintas'
_chemical_formula_sum            'C24 H19 N3 O2'
_chemical_formula_weight         381.42
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 93.3820(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.26290(10)
_cell_length_b                   17.7278(4)
_cell_length_c                   12.9017(2)
_cell_measurement_reflns_used    30184
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1886.59(6)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'CAMERON (Watkin, et al., 1993)'
_computing_publication_material  'WINGX (Farrugia, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker-Nonius CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans to fill the asymmetric unit'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker Nonius FR591 Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0474
_diffrn_reflns_av_sigmaI/netI    0.0359
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            20339
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.01
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9913
_exptl_absorpt_correction_T_min  0.9702
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS V2.10 (Sheldrick, G.M., 2003)
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Fragment
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.177
_refine_diff_density_min         -0.167
_refine_diff_density_rms         0.036
_refine_ls_extinction_coef       0.0054(10)
_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   1.091
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         3326
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.091
_refine_ls_R_factor_all          0.0741
_refine_ls_R_factor_gt           0.0559
_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^)+(0.0236P)^2^+1.3284P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1140
_refine_ls_wR_factor_ref         0.1238
_reflns_number_gt                2636
_reflns_number_total             3326
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo900028c_si_003.cif
_cod_data_source_block           2008acc0215
_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 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4024525