What is required to stabilize Al3+? a gas-phase perspective

Puskar, Ljiljana, Tomlins, Katharine, Duncombe, Bridgette, Cox, Hazel and Stace, Anthony J (2005) What is required to stabilize Al3+? a gas-phase perspective. Journal of the American Chemical Society, 127 (20). pp. 7559-7569. ISSN 0002-7863

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With a combination of experiment and theory (ab initio and DFT), we demonstrate that the Al3+ cation can be stabilized in the gas phase using ligands, which have the ability to act as powerful a electron donors and electron acceptors. The latter property, which implies that electron density from the aluminum cation moves into ligand antibonding orbitals, has not previously been considered significant when accounting for the behavior of Al3+. Of the three ligands identified as falling into the above category, acetonitrile appears to form the most stable complexes in the gas phase, which is in accord with the long established fact that solid-state complexes with Al3+ are readily isolated. From the results, it is suggested that chain or ring compounds containing the -C equivalent to N group might act as successful sequestering agents for Al3+ from aqueous solutions.

Item Type: Article
Additional Information: HC directed the theoretical work at Sussex and interpreted the theory, AJS directed the experimental work at Nottingham, joint corresponding authors. First evidence (theoretical) that a ligand must act as an electron acceptor as well as a sigma donor to stabilize Al3+.
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: Hazel Cox
Date Deposited: 06 Feb 2012 20:58
Last Modified: 28 Mar 2012 15:38
URI: http://sro.sussex.ac.uk/id/eprint/28958
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