Printer Friendly

Boron's stable form.

[ILLUSTRATION OMITTED]

A newly discovered solid form of boron has a remarkable structure: 20-sided cages (purple) made of boron atoms interspersed with smaller groups of two boron atoms (brown). (Likely electron locations are in green.) The cages and groups alternate in a 3-D lattice, much like the arrangement of large chloride ions and small sodium ions in table salt. It's the first stable form of boron to be experimentally confirmed, and the first ionic, saltlike solid scientists have found that's made from a single element. "Finding an ionic structure of an element is something stunning," says Artem Oganov of Stony Brook University in New York, coauthor of the study, which appeared online January 28 in Nature. Boron sometimes behaves like a metal and other times like an insulator. Because of this odd behavior, the natural, stable forms Boron assumes at various temperatures and pressures have been difficult to confirm.

COPYRIGHT 2009 Science Service, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2009 Gale, Cengage Learning. All rights reserved.

 
Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:Matter & Energy
Author:Barry, Patrick
Publication:Science News
Article Type:Brief article
Geographic Code:1USA
Date:Feb 28, 2009
Words:149
Previous Article:Superconductors escape Flatland: iron-based materials allow electric current to flow in 3-D.
Next Article:Astronomers discover the smallest known transiting extrasolar planet: finding could provide clues to composition and structure.
Topics:

Terms of use | Privacy policy | Copyright © 2018 Farlex, Inc. | Feedback | For webmasters