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New examples of triangular terbium(<scp>iii</scp>) and holmium(<scp>iii</scp>) and hexagonal dysprosium(<scp>iii</scp>) single molecule toroics

DOIFull Paper Access

32

Citations

56

References

2019

Year

Stuart K. Langley, Kuduva R. Vignesh, Tulika Gupta, Christopher J. Gartshore, Gopalan Rajaraman, Craig M. Forsyth, Keith S. Murray
Dalton Transactions

Abstract

The structural, magnetic and theoretical aspects are described for three triangular lanthanide complexes, [Tb(OH)(teaH<sub>2</sub>)<sub>3</sub>(paa)<sub>3</sub>]Cl<sub>2</sub> (1), [Dy(OH)(teaH<sub>2</sub>)<sub>3</sub>(paa)<sub>3</sub>]Cl<sub>2</sub> (2) and [Ho(OH)(teaH<sub>2</sub>)<sub>3</sub>(paa)<sub>3</sub>]Cl<sub>2</sub> (3), and a hexanuclear wheel of formula [Dy(pdeaH)<sub>6</sub>(NO<sub>3</sub>)<sub>6</sub>] (4) [teaH<sub>3</sub> = triethanolamine, paaH = N-(2-pyridyl)-acetoacetamide and pdeaH<sub>3</sub> = 3-[bis(2-hydroxyethyl)amino]propan-1-ol]. Each complex displays single molecule toroidal behaviour as rationalised using high-level ab initio calculations. Complexes 2 and 3 are the first examples of mixed moment single molecule toroidal complexes featuring non-Kramers ions.

References

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