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Mixed sandwich thorium complexes incorporating bis(tri-isopropylsilyl)cyclooctatetraenyl and pentamethylcyclopentadienyl ligands: synthesis, structure and reactivity
journal contribution
posted on 2023-06-08, 20:15 authored by Zoë E Button, Jessica A Higgins, Markéta Suvova, Geoff Cloke, S Mark RoeThe 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-?1:?2-CO3) and {Th(COTTIPS2)Cp*}2(µ-?2:?2-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-?1:?1-O2CH)}2.
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Publication status
- Published
Journal
Dalton TransactionsISSN
1477-9226Publisher
Royal Society of ChemistryExternal DOI
Volume
44Page range
2588-2596Department affiliated with
- Chemistry Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2015-03-09Usage metrics
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