Diastereoselective assembly of pentanuclear circular helicates

Clegg, Oliver R. and Fennessy, Rebecca V. and Harding, Lindsay P. and Rice, Craig. R. and Riis-Johannessen, T. and Fletcher, Nicholas C. (2011) Diastereoselective assembly of pentanuclear circular helicates. Dalton Transactions, 40 (45). pp. 12381-12387. ISSN 1477-9226

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Reaction of a ligand which contains two N-donor and O-donor tridentate domains separated by a 1,3-phenylene spacer unit with Zn2+ ions results in a pentanuclear circular helicate [Zn-5(L)(5)](10+) and this structure persists in both the solid and solution state. The formation of this high nuclearity species is governed by unfavourable steric interactions between the phenyl units which destabilize the simple linear helicate. Incorporation of enantiopure units within the ligand strand controls the diastereoselectivity with up to 80% d.e.

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Journal Article
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Dalton Transactions
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07 Jan 2015 19:50
Last Modified:
22 Nov 2022 01:27