Abstract
This work focuses on nucleophilic activation of CO2 at the anionic terminal oxo titanium tris(anilide) complexes [(Solv)n M][OTi(N[t Bu]Ar)3 ]m with M=Li, Na, K, Mg, MgMe, AlCl2 , AlI2 ; Ar=3,5-Me2 C6 H3 ; Solv=Et2 O, THF, 12-crown-4, 2,2,2-cryptand; n, m=1-2. The CO2 binding strength to the terminal oxo ligand of [OTi(N[t Bu]Ar)3 ]- ([1]- ) and the stability of the resulting carbonate moiety [O2 COTi(N[t Bu]Ar)3 ]- ([2]- ) are highly dependent on the Lewis acidity of the countercation. We report herein on CO2 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, [(Et2 O)2 Li][1] and [(12-c-4)Li][1].
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
