Issue 24, 2000

Luminescent gold(I) macrocycles with diphosphine and 4,4′-bipyridylligands

Abstract

The complexes [{–Ph2P(CH2)nPPh2AuNC5H4C5H4NAu–}x]2x+ [CF3CO2]2x (n = 1–6) were prepared as colourless, air-stable solids by reaction of silver trifluoroacetate with the corresponding precursor complex [(CH2)n(Ph2PAuCl)2], and subsequent treatment of the products [(CH2)n(Ph2PAuO2CCF3)2] with 4,4′-bipyridyl. The complexes are suggested to exist in solution as an equilibrium mixture of linear oligomers and cyclic complexes. When n = 1, 3 or 5 the cationic complexes were shown to exist as 26-, 30- and 34-membered macrocyclic rings respectively; only when n = 1 are there significant intramolecular Au  Au contacts of 3.106(1) and 3.084(1) Å. Some of the complexes are strongly emissive at room temperature in solution and in the solid state.

Article information

Article type
Paper
Submitted
30 Jun 2000
Accepted
10 Oct 2000
First published
01 Dec 2000

J. Chem. Soc., Dalton Trans., 2000, 4601-4606

Luminescent gold(I) macrocycles with diphosphine and 4,4′-bipyridyl ligands

M. Brandys, M. C. Jennings and R. J. Puddephatt, J. Chem. Soc., Dalton Trans., 2000, 4601 DOI: 10.1039/B005251P

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