Terpyridine

Synthesis

Terpyridine was initially synthesized from the acetal. An alternative is to react 2-acetylpyridine with a base, thioether group.^[1]

Another alternative is to form a BTP and then to react this with triazine rings to pyridine rings.

Substituted terpyridines are also synthesized from palladium-catalyzed cross-coupling reactions.

Properties

Terpyridine is a tridentate enantiomers, so they differ from bipyridine complexes. The steric structures of bisterpyridine complexes are therefore easy to control.

The terpyridine complexes, like other polypyridine complexes, exhibit characteristic optical and electrochemical properties: metal-to-ligand charge transfer (MLCT) in the visible light region, reversible luminescence. In these properties, however, slight differences exist between terpyridine complexes and bipyridine complexes.

The fact that terpy can act as a pi-acceptor enables terpy and nickel(I) and nickel(III) complexes.

In addition to the electron reductions.

Related compounds

The 2,6-bis-(1,2,4-triazinyl) pyridines are able to bind to metals in a similar way to 2,2';6'2"-terpyridine. These 2,6-bis-(1,2,4-triazinyl) pyridines (BTPs) contain both nuclear reprocessing.

References

1. ^ Potts, K. T.; Ralli, P.; Theodoridis, G.; Winslow, P. “2,2' : 6',2' -Terpyridine” Organic Syntheses, Collected Volume 7, p.476 (1990).