Photoluminescence of Tetranuclear Mercury(II) Complexes

Abstract

The complexes [Hg4(SPh)6(PPh3)4]2+ and [Hg(2-pyridylphenyl)Cl]4 show an intense low-temperature (77 K) phosphorescence at λmax=690 and 500 nm. This emission is assumed to originate from a metal-centered ds excited state which contains considerable ligand-to-metal charge transfer character.