Rapid phosphine exchange on 1.5-nm gold nanoparticles

被引：36

作者：

Petroski, J ^{[1
]}

Chou, MH ^{[1
]}

Creutz, C ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 05期

关键词：

D O I：

10.1021/ic035304b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Triphenylphosphine-cappped, 1.5-nm gold nanoparticles "Au-101-(PPh3)(21)Cl-5" prepared following Hutchison's procedure (Weare, W. W.; Reed, S. M.; Warner, M. G.; Hutchison, J. E. J. Am. Chem. Soc. 2000, 122, 12890) undergo rapid exchange of capping ligand phosphine with dissociated and added phosphine in dichloromethane solvent at 298 K. Remarkably, while the H-1 NMR spectrum resonances of the attached phosphine are broad, characteristic of a range of incompletely averaged environments, the P-31 NMR spectrum (observable only at 213 K and below) exhibits a single, narrow resonance indicating that all of the phosphorus atoms are magnetically equivalent.

引用

页码：1597 / 1599

页数：3

共 31 条

[11] Dynamics of place-exchange reactions on monolayer-protected gold cluster molecules [J].