Ligands designed to impose tetrahedral co-ordination: a convenient route to aminoethyl and aminopropyl pendant arm derivatives of 1,5,9-triazacyclododecane
- 1 January 1992
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 18,p. 2755-2757
- https://doi.org/10.1039/dt9920002755
Abstract
The macrocyclic ligands 1-(2-aminoethyl)-(L1) and 1-(3-aminopropyl)-1,5,9-triazacyclododecane (L2) have been synthesised from 2,4-dioxo-1,5,9-triazacyclododecane, and the complexes [ZnL1(OClO3)]ClO4(trigonal bipyramidal) and [NiL2(NCS)2](octahedral) characterised by X-ray crystallography; L1 and L2 form more stable complexes than do analogues bearing tertiary amino groups on the pendant arms, but allow higher co-ordination numbers.Keywords
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