N-Acyliminoimidazolium Ylides as Precursors to AnionicN-Heterocyclic Carbene Ligands: Control of Topology and Reactivity
Guernon, Hannah; Legault, Claude Y.; Organometallics 32 (2013) 1988–; doi:10.1021/om400078f

data_4080554
_publ_section_title
;
 N-Acyliminoimidazolium Ylides as Precursors to AnionicN-Heterocyclic
 Carbene Ligands: Control of Topology and Reactivity
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1988
_journal_paper_doi               10.1021/om400078f
_journal_volume                  32
_journal_year                    2013
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C14 H14 F3 N3 O1'
_chemical_formula_sum            'C14 H14 F3 N3 O'
_chemical_formula_weight         297.28
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2013-01-07T10:33:05-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 112.045(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   24.3876(13)
_cell_length_b                   8.4057(4)
_cell_length_c                   14.9834(8)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_measurement_wavelength     1.54178
_cell_volume                     2847.0(3)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.934
_diffrn_measured_fraction_theta_max 0.934
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_unetI/netI     0.048
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9185
_diffrn_reflns_theta_full        70.0
_diffrn_reflns_theta_max         70.0
_diffrn_reflns_theta_min         5.62
_exptl_absorpt_coefficient_mu    1.007
_exptl_absorpt_correction_T_max  0.82
_exptl_absorpt_correction_T_min  0.68
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.387
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.521
_exptl_crystal_size_mid          0.374
_exptl_crystal_size_min          0.196
_refine_diff_density_max         0.547
_refine_diff_density_min         -0.498
_refine_diff_density_rms         0.094
_refine_ls_extinction_coef       0.0016(2)
_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   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         9155
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.104
_refine_ls_R_factor_all          0.068
_refine_ls_R_factor_gt           0.0674
_refine_ls_shift/su_max          0.068
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0749P)^2^+12.6064P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2021
_refine_ls_wR_factor_ref         0.2023
_reflns_number_gt                9010
_reflns_number_total             9185
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            om400078f_si_002.cif
_cod_data_source_block           ylide_2a
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4080554