Chiroptical activity of BINAP-stabilized undecagold clusters

被引：166

作者：

Yanagimoto, Yasushi

Negishi, Yuichi

Fujihara, Hisashi

Tsukuda, Tatsuya ^{[1
]}

机构：

[1] Inst Mol Sci, Res Ctr Mol Scale Nanosci, Okazaki, Aichi 4448585, Japan

[2] Kinki Univ, Dept Appl Chem, Higashiosaka, Osaka 5778502, Japan

[3] Kinki Univ, Mol Engn Inst, Higashiosaka, Osaka 5778502, Japan

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 24期

关键词：

D O I：

10.1021/jp061670f

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：

Undecagold cluster compounds [Au-11(BINAP)(4)X-2](+) ( X = Cl and Br) were synthesized by chemical reduction of the corresponding precursor complexes, Au2X2( BINAP), where BINAP represents the bidentate phosphine ligand 2,2'-bis(diphenylphosphino)- 1,1'-binaphthyl. The circular dichroism spectra of Au-11 stabilized by the enantiomers [Au-11(R-BINAP)(4)X-2](+) and [Au-11(S-BINAP)(4)X-2](+) exhibited intense and mirror-image Cotton effect, whereas those of Au-11(3+) clusters stabilized by achiral monodentate phosphine ligands did not. The origin of the chiroptical activity of [Au-11(BINAP)(4)X-2](+) is discussed in the context of the structural deformation of the Au-11(3+) core.

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页码：11611 / 11614

页数：4

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