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_4080549
_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_formula_sum            'C28 H26 Ag2 F6 N6 O2'
_chemical_formula_weight         808.29
_chemical_name_systematic
;
 ?
;
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2009-02-02T13:41:34-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 103.24(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.907(8)
_cell_length_b                   10.975(3)
_cell_length_c                   15.506(4)
_cell_measurement_reflns_used    20
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12.5
_cell_measurement_theta_min      10
_cell_volume                     3132.0(18)
_computing_cell_refinement       Difrac
_computing_data_collection       Difrac
_computing_data_reduction        NRCVAX
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.97
_diffrn_measurement_device_type  CAD4
_diffrn_measurement_method       Omega
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0
_diffrn_reflns_av_unetI/netI     0.0379
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2876
_diffrn_reflns_theta_full        25.5
_diffrn_reflns_theta_max         25.63
_diffrn_reflns_theta_min         2.21
_diffrn_standards_decay_%        10
_diffrn_standards_interval_count 100
_diffrn_standards_number         1
_exptl_absorpt_coefficient_mu    1.322
_exptl_absorpt_correction_T_max  0.6925
_exptl_absorpt_correction_T_min  0.6199
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   Empirical
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.714
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.626
_refine_diff_density_min         -0.655
_refine_diff_density_rms         0.097
_refine_ls_extinction_coef       0.0031(3)
_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   0.991
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2876
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.0685
_refine_ls_R_factor_gt           0.0433
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0747P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1057
_refine_ls_wR_factor_ref         0.1155
_reflns_number_gt                2128
_reflns_number_total             2876
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400078f_si_002.cif
_cod_data_source_block           complex_3a
_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 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Psi-Scan'
changed to 'psi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        3131.9(18)
_cod_original_sg_symbol_H-M      C2/C
_cod_database_code               4080549