Pressure Dependence Investigation of the Low-Temperature Structure of TlAu(CN)2 by High-Resolution Neutron Powder Diffraction and Optical Studies
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- 作者：Peter Fischer ; Joë ; l Mesot ; Brian Lucas ; Andreas Ludi ; Howard Patterson ; and Alan Hewat
- 刊名：Inorganic Chemistry
- 出版年：1997
- 出版时间：June 18, 1997
- 年：1997
- 卷：36
- 期：13
- 页码：2791 - 2794
- 全文大小：163K
- 年卷期：v.36,no.13(June 18, 1997)
- ISSN：1520-510X
文摘
In contrast to the anomalous increase of the latticeparameter b and associated reorientation of the[Au(3)(CN)2]-ion with decreasing temperature, the unit cell volume and the latticeparameters of TlAu(CN)2 are found to decrease(at T = 62 K) linearly for external hydrostatic pressuresup to 4.5 kbar. The [Au(CN)2]- ions donot essentiallychange orientation with pressure. The structural results suggestthat the change in luminescence energy withpressure is due to changes in Tl···Au as well as in Au···Auinteratomic separations, which again illustrates theimportance of Tl···Au covalent interactions in thiscompound.