Biicosahedral gold clusters [Au25(PPh3)10(SCnH2n+1)5Cl2]2+ (n=2-18):: A stepping stone to cluster-assembled materials

被引：335

作者：

Shichibu, Yukatsu

Negishi, Yuichi

Watanabe, Takahito

Chaki, Nirmalya K.

Kawaguchi, Hiroyuki

Tsukuda, Tatsuya ^{[1
]}

机构：

[1] Inst Mol Sci, Dept Mat Mol Sci, Okazaki, Aichi 4448585, Japan

[2] Inst Mol Sci, Dept Life & Coordinat Complex Mol Sci, Okazaki, Aichi 4448787, Japan

[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 22期

基金：

日本科学技术振兴机构;

关键词：

D O I：

10.1021/jp073101t

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The chemical reaction between [Au-11(PPh3)(8)Cl-2](+) and n-alkanethiol CnH2n+1SH (n = 2, 8, 10, 12, 14, 16, and 18) serendipitously yielded stable Au-25 cluster compounds with the formula, [Au-25(PPh3)(10)(SCnH2n+1)(5)Cl-2](2+). Single-crystal X-ray structural analysis of [Au-25(PPh3)(10)(SC2H5)(5)Cl-2](SbF6)(2) revealed that the Au-25 core is constructed by bridging two icosahedral Au-13 clusters with thiolates sharing a vertex atom. Optical absorption spectroscopy showed that coupling between the Au-13 building blocks gives rise to new electronic levels in addition to those of the Au-13 constituents.

引用

收藏

页码：7845 / 7847

页数：3

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