X-ray absorption spectroscopy and X-ray diffraction of AuCl₃-graphite

authored by

J. Ehrich, P. Behrens, W. Metz, W. Niemann

Abstract

Single crystal samples of a stage 1 compound of AuCl₃-graphite have been investigated by X-ray diffraction. The 001 patterns show a lattice parameter c⁽¹⁾ of 683 pm. The received hk-pattern can be interpreted by an oblique angled in-plane lattice with lattice parameters: a = 1288 pm, b = 655 pm and γ=112.5°, commensurate with the graphite lattice. This in-plane cell is nearly identical with the a-c lattice plane of pristine Au(III)-chloride. Therefore, we consider that AuCl₃-graphite is built up of the same planar units Au₂Cl₆ as they are found in pristine Au(III)-chloride. Angle dependent EXAFS and XANES measurements of HOPG samples indicate the tilting of the planar molecules by an angle of ca. 15° with respect to the graphite layers.

External Organisation(s)

Universität Hamburg
Haldor Topsoe AS

Type

Article

Journal

Synthetic metals

Volume

34

Pages

217-222

No. of pages

6

ISSN

0379-6779

Publication date

1989

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Materials Chemistry

Electronic version(s)

https://doi.org/10.1016/0379-6779(89)90388-3 (Access: Closed)