Journal article

Synthesis and Characterisation of Helicate and Mesocate Forms of a Double-Stranded Diruthenium(ii) Complex of a Di(terpyridine) Ligand

Kate L Flint, J Grant Collins, Siobhan J Bradley, Trevor A Smith, Christopher Sumby, F Richard Keene



A diruthenium(ii) complex involving the di(terpyridine) ligand 1,2-bis{5-(5″-methyl-2,2′:6′,2″-terpyridinyl)}ethane was synthesised by heating an equimolar ratio of RuCl3 and the ligand under reflux conditions in ethylene glycol for 3 days, realising double-stranded helicate and mesocate forms which were chromatographically separated. The two species were obtained in relatively low yield (each ∼7-9 %) from the reaction mixture. X-Ray structural studies revealed differences in the cavity sizes of the two structures, with the helicate structure having a significantly smaller cavity. Furthermore, the helicate and mesocate forms pack with notably different arrangements of the structures with the..

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University of Melbourne Researchers


Awarded by ARC Centre of Excellence in Exciton Science

Funding Acknowledgements

The authors wish to thank Dr Marie Squire (University of Canterbury, New Zealand) for her assistance with ESI high-resolution mass spectrometry measurements. SJB and TAS acknowledge the support of the ARC Centre of Excellence in Exciton Science (CE170100026). Aspects of this research were undertaken on the MX1 beamline at the Australian Synchrotron, Victoria, Australia.