Imaging of nearly uniform Os5C clusters dispersed on MgO powder

被引：17

作者：

Allard, LF

Panjabi, GA

Salvi, SN

Gates, BC ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

来源：

NANO LETTERS | 2002年 / 2卷 / 04期

关键词：

D O I：

10.1021/nl015621k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

[Os5C(CO)(14)](2--) was synthesized in 65% yield on the surface of MgO by treatment of adsorbed [Os-3(CO)(12)] in CO. High-resolution transmission electron microscopy (HRTEM) indicated that the nanoclusters were nearly monodisperse and in the size range consistent with [Os5C(CO)(14)](2-). The supported [Os5C(CO)(14)](2-) was decarbonylated in helium, giving supported nanoclusters that are well approximated as Os5C, as shown by HRTEM and EXAFS data. Decarbonylation in H-2 gave larger clusters of osmium, as shown by HRTEM.

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页码：381 / 384

页数：4

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