期刊
DALTON TRANSACTIONS
卷 39, 期 27, 页码 6190-6197出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0dt00118j
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资金
- UK EPSRC [EP/F063733/1, EP/D076889/1]
- Royal Society
- Engineering and Physical Sciences Research Council [EP/F063733/1, EP/D076889/1] Funding Source: researchfish
- EPSRC [EP/F063733/1, EP/D076889/1] Funding Source: UKRI
Insertion of CO(2) into the metal-N bond of a series of synthetically important alkali-metal TMP (2,2,6,6-tetramethylpiperidide) complexes has been studied. Determined by X-ray crystallography, the molecular structure of the TMEDA-solvated Li derivative shows a central 8-membered (LiOCO)(2) ring lying in a chair conformation with distorted tetrahedral lithium centres. While trying to obtain crystals of a THF-solvated derivative, a mixed carbonato/carbamato dodecanuclear lithium cluster was formed containing two central (CO(3))(2-) fragments and eight O(2)CTMP ligands with four distinct bonding modes. A bisalkylaluminium carbamato complex has also been prepared via two different methods (CO(2) insertion into a pre-formed Al N bond and ligand transfer from the corresponding lithium reagent) which adopts a dimeric structure in the solid state.
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