A potential intermediate for the aza-Corey-Chaykovsky reaction: synthesis, structure, and thermolysis of a pentacoordinate 1,2-thiazetidine 1-oxide.
Kano, Naokazu; Daicho, Yuya; Kawashima, Takayuki; Organic letters 8 (2006) 4625–4627; doi:10.1021/ol0618499

data_1506212
_publ_section_title
;
 A potential intermediate for the aza-Corey-Chaykovsky reaction:
 synthesis, structure, and thermolysis of a pentacoordinate
 1,2-thiazetidine 1-oxide.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              4625
_journal_page_last               4627
_journal_paper_doi               10.1021/ol0618499
_journal_volume                  8
_journal_year                    2006
_chemical_formula_moiety         'C25 H15 F12 N O2 S'
_chemical_formula_sum            'C25 H15 F12 N O2 S'
_chemical_formula_weight         621.44
_chemical_name_common            'compound 9'
_chemical_name_systematic
; 
Pentacoordinate 1,2-thiazetidine 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.371(4)
_cell_length_b                   16.811(7)
_cell_length_c                   14.108(6)
_cell_measurement_reflns_used    8291
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      27.4835
_cell_measurement_theta_min      3.1195
_cell_volume                     2459.7(17)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2000)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2000)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2000)'
_computing_molecular_graphics
'ORTEP-3 for Windows ver 1.08 (Farrugia, 1997-2005)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_detector_area_resol_mean 14.6199
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_details
;
scan:
    Number of images: 720
               Slice: -70.0000 - 110.0000
         Image width: 0.2500
            Exp time: 30.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 45.0000
                 Phi: 0.0000
                 XTD: 44.9657
              2theta: 19.7580
scan:
    Number of images: 720
               Slice: -70.0000 - 110.0000
         Image width: 0.2500
            Exp time: 30.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 45.0000
                 Phi: 90.0000
                 XTD: 44.9657
              2theta: 19.7580

;
_diffrn_measurement_device
;
Mercury CCD (2x2 bin mode)
;
_diffrn_measurement_device_details
;
AFC8: Eulerian 3-circle
;
_diffrn_measurement_method       dtintegrate.ref
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0202
_diffrn_reflns_av_sigmaI/netI    0.0181
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14892
_diffrn_reflns_reduction_process 'Lp corrections applied'
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.12
_diffrn_source_current           40.0000
_diffrn_source_power             2.0000
_diffrn_source_voltage           50.0000
_exptl_absorpt_coefficient_mu    0.249
_exptl_absorpt_correction_T_max  0.9877
_exptl_absorpt_correction_T_min  0.9290
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Jacobson, R. (1998) Private communication
;
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.678
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.231
_refine_diff_density_min         -0.187
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.93(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         4261
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0249
_refine_ls_R_factor_gt           0.0243
_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^)+(0.0285P)^2^+0.8729P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0569
_refine_ls_wR_factor_ref         0.0572
_reflns_number_gt                4204
_reflns_number_total             4261
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol0618499si20060726_112743.cif
_cod_data_source_block           Compound9
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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 
;
_cod_original_cell_volume        2459.7(18)
_cod_database_code               1506212