Unique [core+two] structure and optical property of a dodeca-ligated undecagold cluster: critical contribution of the exo gold atoms to the electronic structure

Yukatsu Shichibu; Yutaro Kamei; Katsuaki Konishi

doi:10.1039/c2cc30251a

Unique [core+two] structure and optical property of a dodeca-ligated undecagold cluster: critical contribution of the exo gold atoms to the electronic structure

Chem Commun (Camb). 2012 Aug 7;48(61):7559-61. doi: 10.1039/c2cc30251a. Epub 2012 Mar 20.

Authors

Yukatsu Shichibu¹, Yutaro Kamei, Katsuaki Konishi

Affiliation

¹ Faculty of Environmental Earth Science, Hokkaido University, North 10 West 5, Sapporo 060-0810, Japan.

PMID: 22430877
DOI: 10.1039/c2cc30251a

Abstract

A novel dodeca-ligated undecagold cluster having a nonagold core plus two exo-attached gold atoms was synthesized. Unlike the conventional icosahedron-based "core-only" isomer, the [9+2] cluster showed an intense visible absorption band. Theoretical calculation showed the involvement of the exo gold atoms in the generation of the unique electronic structure.