Abstract: | The homoleptic organocerium complex Ce{C(SiHMe2)3}3 ( 1 ) reacts with B(C6F5)3 to produce the zwitterionic bis(alkyl) hydridoborato Ce{C(SiHMe2)3}2HB(C6F5)3 ( 2 ). NMR and IR spectroscopy and X‐ray crystallography indicate that each alkyl ligand contains two bridging Ce↼H‐Si interactions in both 1 and 2 . Compound 2 serves as a precatalyst for the hydrosilylation of acrylates to give α‐silyl esters at room temperature with a turnover number of 2200. |