Structure of Enolate Complexes

CHAPTER 3 COVALENT (x-TYPE) LIGANDS BOUND THROUGH METAL-CARBON AND METAL-HYDROGEN BONDS 

The effect of the trans ligand on C- vs. 0-binding modes of palladium enolates. 

Late transition metal enolate complexes in which the enulate is bound in an fashion have also been observed. One of the first examples of an -ri -enolate complex involved a Rh(I) fragment ligated by phosphines (the reactant in Equation 3.46). The unsaturation at Rh favored the T -form. Addition of a strong binding ligand (CO) produced the four-coordinate complex containing an Ti -O-enolate (Equation 3.46). 

The different coordination modes of the enolate complex can be distinguished by IR, and H, Kl, and NMR spectroscopy. A C-bound enolate complex can be identified by the 

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