Mixed sandwich thorium complexes incorporating bis(tri-isopropylsilyl)cyclooctatetraenyl and pentamethylcyclopentadienyl ligands: synthesis, structure and reactivity

Button, Zoë E, Higgins, Jessica A, Suvova, Markéta, Cloke, F Geoffrey N and Roe, S Mark (2015) Mixed sandwich thorium complexes incorporating bis(tri-isopropylsilyl)cyclooctatetraenyl and pentamethylcyclopentadienyl ligands: synthesis, structure and reactivity. Dalton Transactions, 44. pp. 2588-2596. ISSN 1477-9226

Full text not available from this repository.

Abstract

The Th(IV) mixed-sandwich halide complexes Th(COTTIPS2)Cp*X (where COTTIPS2 = 1,4-{SiiPr3}2C8H6, X = Cl, I) have been synthesised, and structurally characterised. When Th(COTTIPS2)Cp*I is reduced in situ in the presence of CO2, a mixture of dimeric carboxylate and oxalate complexes {Th(COTTIPS2)Cp*}2(μ-κ1:κ2-CO3) and {Th(COTTIPS2)Cp*}2(μ-κ2:κ2-C2O4) are formed, possibly via a transient Th(III) species. Th(COTTIPS2)Cp*Cl is readily alkylated to yield the benzyl complex Th(COTTIPS2)Cp*CH2Ph, which reacts with CO2 to form a carboxylate and with H2 to form a hydride; the latter inserts CO2, giving the bridging formate complex {Th(COTTIPS2)Cp*(μ-κ1:κ1-O2CH)}2.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry
Depositing User: Tom Gittoes
Date Deposited: 09 Mar 2015 10:32
Last Modified: 09 Mar 2015 10:32
URI: http://sro.sussex.ac.uk/id/eprint/53271
📧 Request an update