XAFS study on metal endohedral fullerenes

被引：6

作者：

Kubozono, Y

Inoue, T

Takabayashi, Y

Fujiki, S

Kashino, S

Akasaka, T

Wakahara, T

Inakuma, M

Kato, H

Sugai, T

Shinohara, H

Emura, S

机构：

[1] Okayama Univ, Okayama 7008530, Japan

[2] Nagoya Univ, Nagoya, Aichi 4648602, Japan

[3] Niigata Univ, Niigata 9502181, Japan

[4] Osaka Univ, Osaka 5670047, Japan

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2001年 / 8卷

关键词：

XAFS; XANES; metal endohedral fullerene; structure; valence;

D O I：

10.1107/S0909049500017155

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Structure of metal endohedral fullerenes is studied by XAFS and XANES. The Sc-Sc distance of 2.23(1) Angstrom determined from Sc K-edge XAFS supports the formation of a triangular Sc-3 cluster in Sc-3@C-82 as is found by MEM analysis for the X-ray diffraction. Gd L-III-edge XAFS of Gd@C-82 shows that the first and the second neigboring Gd-C distances are 2.51(2) and 2.85(4) Angstrom, respectively. The La-La distance of La-2@C-80 has been determined to be 3.90(1) Angstrom at 40 K. This value does not change when increasing temperature [3.90(2) Angstrom at 240 K]. The position and the valenece of the Eu atom in Eu@C-60 are also discussed based on Eu L-III-edge XAFS and XANES.

引用

页码：551 / 553

页数：3

共 23 条

[1] C-13 and La-139 NMR studies of La-2@C-80: First evidence for circular motion of metal atoms in endohedral dimetallofullerenes [J].