Baby Crystal (PbS)32

  • Author: ChemistryViews
  • Published: 19 January 2012
  • Copyright: WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Journal of Chemical Physics/American Institute of Physics
thumbnail image: Baby Crystal (PbS)<sub>32</sub>

Researchers around B. Kiran, McNeese State University, Louisiana, USA, found through theoretical calculations based on density functional theory that (PbS)32 is the smallest stable cubic cluster that possesses both the same cubic structure and coordination number as the bulk crystal. Lead sulfide (PbS) forms when an equal number of lead and sulfur atoms exchange electrons and bond together in cubic crystals.

Cubic (PbS)32 is the smallest cluster, exhibiting sixfold coordination, that can be replicated to obtain the bulk crystal.


The crystal was identified by running computer simulations that calculated the energy and geometry of different structures containing different numbers of atoms. By using scanning tunneling microscope images to measure the dimensions of the resultant lead sulfide nano-blocks, the researchers confirmed that the (PbS)32 "baby crystals" had indeed stacked together as theoretically predicted.


Article Views: 3466

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 ChemistryViews.org, please contact us first for permission. more

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