Volume 129, Issue 34 pp. 10312-10316
Zuschrift

Eight-Electron Silver and Mixed Gold/Silver Nanoclusters Stabilized by Selenium Donor Ligands

Wan-Ting Chang

Wan-Ting Chang

Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401 Taiwan R.O.C.

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Po-Yi Lee

Po-Yi Lee

Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401 Taiwan R.O.C.

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Jian-Hong Liao

Jian-Hong Liao

Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401 Taiwan R.O.C.

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Dr. Kiran Kumarvarma Chakrahari

Dr. Kiran Kumarvarma Chakrahari

Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401 Taiwan R.O.C.

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Dr. Samia Kahlal

Dr. Samia Kahlal

UMR-CNRS, 6226 “, Institut des Sciences Chimiques de Rennes”, University de Rennes 1, 35042 Rennes Cedex, France

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Dr. Yu-Chiao Liu

Dr. Yu-Chiao Liu

Institute of Chemistry, Academica Sinica, Taipei, 115 Taiwan R.O.C.

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Dr. Ming-Hsi Chiang

Dr. Ming-Hsi Chiang

Institute of Chemistry, Academica Sinica, Taipei, 115 Taiwan R.O.C.

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Prof. Jean-Yves Saillard

Corresponding Author

Prof. Jean-Yves Saillard

UMR-CNRS, 6226 “, Institut des Sciences Chimiques de Rennes”, University de Rennes 1, 35042 Rennes Cedex, France

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Prof. C. W. Liu

Corresponding Author

Prof. C. W. Liu

Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien, 97401 Taiwan R.O.C.

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First published: 22 May 2017
Citations: 33

Abstract

The first atomically and structurally precise silver-nanoclusters stabilized by Se-donor ligands, [Ag20{Se2P(OiPr)2}12] (3) and [Ag21{Se2P(OEt)2}12]+(4), were isolated by ligand replacement reaction of [Ag20{S2P(OiPr)2}12] (1) and [Ag21{S2P(OiPr)2}12]+ (2), respectively. Furthermore, doping reactions of 4 with Au(PPh3)Cl resulted in the formation of [AuAg20{Se2P(OEt)2}12]+ (5). Structures of 3, 4, and 5 were determined by single-crystal X-ray diffraction. The anatomy of cluster 3 with an Ag20 core having C3 symmetry is very similar to that of its dithiophosphate analogue 1. Clusters 4 and 5 exhibit an Ag21 and Au@Ag20 core of Oh symmetry composed of eight silver capping atoms in a cubic arrangement and encapsulating an Ag13 and Au@Ag12 centered icosahedron, respectively. Both ligand exchange and heteroatom doping result in significant changes in optical and emissive properties for chalcogen-passivated silver nanoparticles, which have been theoretically confirmed as 8-electron superatoms.

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