Knölker-Type Iron Complexes Bearing an N-Heterocyclic Carbene Ligand: Synthesis, Characterization, and Catalytic Dehydration of Primary Amides
Elangovan, Saravanakumar; Quintero-Duque, Samuel; Dorcet, Vincent; Roisnel, Thierry; Norel, Lucie; Darcel, Christophe; Sortais, Jean-Baptiste; Organometallics 34 (2015) 4521–; doi:10.1021/acs.organomet.5b00553

data_4086282
_publ_section_title
;
 Kn\"olker-Type Iron Complexes Bearing an N-Heterocyclic Carbene Ligand:
 Synthesis, Characterization, and Catalytic Dehydration of Primary Amides
;
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              4521
_journal_paper_doi               10.1021/acs.organomet.5b00553
_journal_volume                  34
_journal_year                    2015
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C26 H42 Fe N2 O3 Si2'
_chemical_formula_sum            'C26 H42 Fe N2 O3 Si2'
_chemical_formula_weight         542.65
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   14.7502(4)
_cell_length_b                   16.7058(4)
_cell_length_c                   23.0615(5)
_cell_measurement_reflns_used    7746
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.46
_cell_measurement_theta_min      2.59
_cell_measurement_wavelength     0.71073
_cell_volume                     5682.7(2)
_computing_cell_refinement       'Bruker APEX2 (Bruker, 2006)'
_computing_data_collection       'Bruker APEX2 (Bruker, 2006)'
_computing_data_reduction        'Bruker APEX2 (Bruker, 2006)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material
;
           WinGX publication routines (Farrugia, 2012),
           CRYSCAL (T. Roisnel, local program)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0422
_diffrn_reflns_av_unetI/netI     0.0384
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            27683
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    0.644
_exptl_absorpt_correction_T_max  0.851
_exptl_absorpt_correction_T_min  0.730
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2320
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.337
_refine_diff_density_min         -0.303
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     324
_refine_ls_number_reflns         6499
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0437
_refine_ls_R_factor_gt           0.0334
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0381P)^2^+1.8787P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0798
_refine_ls_wR_factor_ref         0.0848
_reflns_number_gt                5378
_reflns_number_total             6499
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om5b00553_si_002.cif
_cod_data_source_block           SR076
_cod_database_code               4086282