AI Article Synopsis
- The work investigates how carbon monoxide (CO) interacts with titanium complexes, particularly focusing on a specific type of titanium compound called anionic terminal oxo titanium tris(anilide) complexes.
- It highlights that the strength of CO binding and the stability of a related structure (the carbonate moiety) depend significantly on the type and acidity of the countercation used with these titanium complexes.
- The study includes thermodynamic data for the complexes involving lithium as the countercation, providing insights into how different countercations and their environments affect CO binding.
Article Abstract
This work focuses on nucleophilic activation of CO at the anionic terminal oxo titanium tris(anilide) complexes [(Solv) M][OTi(N[ Bu]Ar) ] with M=Li, Na, K, Mg, MgMe, AlCl , AlI ; Ar=3,5-Me C H ; Solv=Et O, THF, 12-crown-4, 2,2,2-cryptand; n, m=1-2. The CO binding strength to the terminal oxo ligand of [OTi(N[ Bu]Ar) ] ([1] ) and the stability of the resulting carbonate moiety [O COTi(N[ Bu]Ar) ] ([2] ) are highly dependent on the Lewis acidity of the countercation. We report herein on CO binding as a function of countercation and countercation coordination environment, and comment in this respect on the bottom and upper limits of the cation Lewis acidity. Thermodynamic parameters are provided for oxo complexes with lithium as countercation, that is, [(Et O) Li][1] and [(12-c-4)Li][1].
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| http://dx.doi.org/10.1002/chem.201803265 | DOI Listing |
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