2-(Pyridinium-1-yl)-1,1-bis(triflyl)ethanides: structural behaviour and availability as bis(triflyl)ethylating reagents
Hikaru Yanai; Yoichi Takahashi; Haruhiko Fukaya; Yasuo Dobashi; Takashi Matsumoto; Chem.Commun. 49 (2013) 10091–; doi:10.1039/c3cc46171h

data_7109934
_publ_section_title
;
 2-(Pyridinium-1-yl)-1,1-bis(triflyl)ethanides: structural behaviour and
 availability as bis(triflyl)ethylating reagents
;
_journal_name_full               Chem.Commun.
_journal_page_first              10091
_journal_paper_doi               10.1039/c3cc46171h
_journal_volume                  49
_journal_year                    2013
_chemical_formula_moiety         'C7 H5 F6 N O5 S2'
_chemical_formula_sum            'C7 H5 F6 N O5 S2'
_chemical_formula_weight         361.24
_chemical_melting_point          420
_chemical_name_systematic
; 
2-(2-Oxazol-3-ium-3-yl)-1,1-bis((trifluoromethyl)sulfonyl)ethan-1-ide
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             '22 February 2013'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 126.4270(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   33.764(3)
_cell_length_b                   8.8317(7)
_cell_length_c                   20.2876(15)
_cell_measurement_reflns_used    6282
_cell_measurement_temperature    90
_cell_measurement_theta_max      27.64
_cell_measurement_theta_min      2.42
_cell_volume                     4867.6(7)
_computing_cell_refinement       'APEX2 (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT (Bruker AXS, 2004)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_source         'Bruker TXS fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0206
_diffrn_reflns_av_sigmaI/netI    0.0236
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -40
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            11425
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.42
_exptl_absorpt_coefficient_mu    0.539
_exptl_absorpt_correction_T_max  0.9382
_exptl_absorpt_correction_T_min  0.8999
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
Crystal Faces plugin in Bruker APEX2 software
;
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.972
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2880
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.567
_refine_diff_density_min         -0.351
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     379
_refine_ls_number_reflns         4293
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0266
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0287P)^2^+9.6428P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0652
_refine_ls_wR_factor_ref         0.0673
_reflns_number_gt                3909
_reflns_number_total             4293
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc46171h.txt
_cod_data_source_block           CBA09-2k
_cod_original_cell_volume        4867.6(6)
_cod_original_sg_symbol_H-M      'C 2/c     '
_cod_database_code               7109934