Johnson, Chloe Albrecht, Martin Triazolylidene Iron(II) Piano-Stool Complexes: Synthesis and Catalytic Hydrosilylation of Carbonyl Compounds A new series of iron­(II) piano stool complexes was synthesized that contain monodentate triazolylidene ligands with different aryl and alkyl substituents as well as an example of a C,N-chelating pyridine-substituted triazolylidene iron complex. The electronic and steric effect of wingtip modification was assessed by electrochemical, infrared spectroscopic, and X-ray diffraction analysis. All complexes were active in the catalytic hydrosilylation of aldehydes and ketones. The monodentate systems outperform the chelating triazolylidene analogue by far, reaching turnover frequencies TOF<sub>max</sub> as high as 14400 h<sup>–1</sup> at 0.1 mol % catalyst loading. Mechanistic investigations indicate a radical mechanism for the catalytic H–Si bond activation. wingtip modification;steric effect;chelating triazolylidene analogue;turnover frequencies TOF max;Carbonyl Compounds;Catalytic Hydrosilylation;X-ray diffraction analysis;Mechanistic investigations;monodentate systems;complex;alkyl substituents;monodentate triazolylidene ligands 2017-07-13
    https://acs.figshare.com/articles/journal_contribution/Triazolylidene_Iron_II_Piano-Stool_Complexes_Synthesis_and_Catalytic_Hydrosilylation_of_Carbonyl_Compounds/5203501
10.1021/acs.organomet.7b00349.s001