Discovery of Cu3Pb

  • Author: Angewandte Chemie International Edition
  • Published Date: 25 September 2018
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Discovery of Cu<sub>3</sub>Pb

Exploring uncharted areas of phase space enables the discovery of exotic materials. One area of particular interest is the combination of transition metals with heavy main-group elements. One approach to accessing such materials is the use of high pressures.

Danna E. Freedman, Northwestern University, Evanston, IL, USA, and colleagues have used high-pressure synthesis to prepare the first binary compound of copper and lead, Cu3Pb. The team created Cu3Pb by subjecting a mixture of copper and lead to pressures of 16 GPa (over 100,000 atm), while simultaneously laser-heating the sample to temperatures greater than 1000 K. The pressures were achieved by compressing the metals inside a diamond anvil cell. The reaction was monitored using in-situ powder X-ray diffraction.

Cu3Pb can be best described as a mixture of the two elemental structures, with a hexagonal lead lattice hosting octahedra of copper atoms (pictured). The high formation pressure suggests the hexagonal high-pressure structure of elemental lead is a prerequisite for the formation of Cu3Pb. Electronic structure calculations indicate that Cu3Pb may show an unusual electronic structure, which is sensitive to small structural changes. This means chemical doping could potentially lead to the isolation of doped Cu3Pb at ambient conditions.


Article Views: 1419

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH