Five-to-Six Membered Ring-Rearrangements in the Reaction of 5-Perfluoroalkyl-1,2,4-oxadiazoles with Hydrazine and Methylhydrazine
Silvestre Buscemi; Andrea Pace; Antonio Palumbo Piccionello; Ivana Pibiri; Nicoló Vivona; Gianluca Giorgi; Andrea Mazzanti; Domenico Spinelli; Journal of Organic Chemistry 71 (2006) 8106–8113; doi:10.1021/jo061251e

data_4022011
_publ_contact_author_address
;     Dipartimento di Chimica Organica "E. Patern\`o"
 Universit\`a degli Studi di Palermo, 
 Viale delle Scienze - Parco d'Orleans II
      I-90128 Palermo
      Italy 
;
_publ_contact_author_email       sbuscemi@unipa.it
_publ_contact_author_name        'Silvestre Buscemi'
_publ_section_title
;
 Five-to-Six Membered Ring-Rearrangements in the Reaction of
 5-Perfluoroalkyl-1,2,4-oxadiazoles with Hydrazine and Methylhydrazine
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8106
_journal_page_last               8113
_journal_paper_doi               10.1021/jo061251e
_journal_volume                  71
_journal_year                    2006
_chemical_formula_moiety         'C20 H11 F7 N4 O4'
_chemical_formula_sum            'C20 H11 F7 N4 O4'
_chemical_formula_weight         504.33
_chemical_name_systematic
;
O,N-Dibenzoyl-5-hydroxylamino-3-heptafluoropropyl-1,2,4-triazin-6-one
;
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   'fourier map'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.011(2)
_cell_angle_beta                 89.994(2)
_cell_angle_gamma                85.451(2)
_cell_formula_units_Z            4
_cell_length_a                   5.7024(2)
_cell_length_b                   18.5996(6)
_cell_length_c                   19.8661(9)
_cell_measurement_temperature    120(2)
_cell_volume                     2100.41(14)
_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    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_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 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0923
_diffrn_reflns_av_sigmaI/netI    0.1286
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            37831
_diffrn_reflns_theta_full        27.69
_diffrn_reflns_theta_max         27.69
_diffrn_reflns_theta_min         1.02
_exptl_absorpt_coefficient_mu    0.153
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.595
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.257
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.997
_refine_ls_hydrogen_treatment    free
_refine_ls_matrix_type           full
_refine_ls_number_parameters     719
_refine_ls_number_reflns         9665
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.997
_refine_ls_R_factor_all          0.1582
_refine_ls_R_factor_gt           0.0615
_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^)+(0.0604P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1124
_refine_ls_wR_factor_ref         0.1412
_reflns_number_gt                4833
_reflns_number_total             9665
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo061251esi_1.cif
_cod_database_code               4022011